Category: Training

Posted on

They Told You Wrong About ISO

Candles, Catholic Church, Regensburg Germany.

Many of us have a wrong idea about ISO settings. I will just say they told you wrong about ISO. It was a misunderstanding. Whoever “they” are.

Statement of faith

It is stated as a “strong suggestion“, especially when we are learning landscape or portrait work. Never shoot with ISO over 100. Maybe it is stated as only shoot at the native ISO setting for your camera. Either way, these are given as rules.

I hate rules, especially for my art. Rule of thirds. Rules of composition. Never put the subject in the center. Never shoot at midday. Always use a tripod. The list goes on.

Like with religion, most of the so-called rules are based on good ideas, but over time they are repeated as commands and the underlying reasons are lost. Just do it. (I don’t think that is what Nike meant.) The rules become a statement of blind faith that cannot be challenged.

What is noise?

All digital cameras have noise. Noise is randomly generated in the sensor and in the electronics of the signal path until the pixels have been digitized by the analog to digital converter (ADC). The noise is a fundamental property of physics.

The question is how much noise is there relative to the desired data. This is called signal to noise ratio in engineering. When we amplify a signal by increasing the ISO setting, all the signal including the noise is increased. This is why images shot at high ISO settings tend to look noisy. The image is usually not less sharp, but there is more noise obscuring things.

It is true for a low cost point and shoot camera or a high end medium format camera. What changes are the relative amounts of noise and the limits the image can be pushed to.

What is ISO?

You’re familiar with the exposure triad: the combination of aperture, shutter speed, and ISO that determine exposure. That’s it. Many other things affect the composition and quality of an image, but only those 3 control the exposure.

Aperture is the size of the diaphragm opening in the lens. It controls, among other things, the amount of light coming in. Shutter speed is the length of time the shutter is open to let light come in. And the ISO setting is kind of like a volume control. It sets the gain or amount of amplification of the sensor data.

Going way back to early film days, there were no agreed on standards for the measure of how sensitive film was. So a couple of the largest standards organizations (the ASA and DIN scales) came together and created a standards group under the International Organization of Standards. They adopted the acronym of the standards organization (in English) as the name. By the way, officially “ISO” is not an acronym, it is a word, pronounced eye-so.

Long way around, but now there are defined standards for exposure. For a given combination of aperture and shutter speed, the ISO settings on all cameras give the same exposure.

Why use higher ISO settings

OK then, in concept, the ISO setting is a volume control for exposure. Turning it up (increasing the ISO value) amplifies the exposure data. But as I mentioned, it is not free. Amplifying the exposure also amplifies the noise in it.

It is true that low ISO settings produce less noise in the captured image. Modern sensors are much better than early ones. This is one of the wonders of engineering improvements that happen as a technology matures.

Then, we should not use high ISO settings, right? Well, everything is a tradeoff. We need to use a minimum shutter speed to avoid camera shake when hand holding or to stop subject movement. We need to use a certain aperture to give the depth of field we want. These decisions must be balanced in the exposure triad, often by increasing the ISO.

Can’t I just underexpose?

When you accept that we must use the lowest ISO setting, the logical conclusion is that you could massively underexpose the image and “correct” it in post processing. Unfortunately this doesn’t work well. You are still boosting the noise unacceptably.

The camera manufacturer knows more about it’s sensors than your image processing software does. The camera’s built-in ISO amplification can take into account it’s characteristics and do a better job. And modern sensors and electronics do a very good job.

Are you wrong about ISO?

If you are following a rule dictating you must or can’t do something, yes you are wrong. There are no rules in art. No ISO-like standards body specifies what your image must look like. There are always groups wanting to do this (are you listening camera clubs?), but they have no authority.

If you are hand holding a shot, it is better to boost the ISO to steady the movement than follow a rule about using low ISO. The noise will be secondary to the reduced shake. Or I sometimes use the lowest ISO setting in my camera to create blur. I enjoy intentional camera movement (ICM) shots and will occasionally force an artificially slow shutter speed.

If it is night and you want to shoot stars or street scenes, are you not going to do it because you would have to violate a rule by the ISO police?

Use the ISO setting that lets you express what you want to do. It is your art. There are no rules. Besides, luminance noise looks like film grain. It can be an interesting artistic technique in itself. Do what feels right to you.

Apology

I used fairly strong language about this. The reality is that most photography writers have softened their recommendations on ISO. Most of them freely recommend using high ISO. This is healthy.

But I know many of us were “imprinted” by early mentors who left us feeling there was something dirty about going above 100 ISO. I want to free you if you still have those self-imposed limits. Using even a very high ISO and getting the shot is always better than missing it because you wouldn’t want to chance increased noise.

Today’s image

Since I’m advocating it, here is an extreme case that I’m happy with. This was shot hand held with an old Nikon D5500 camera – at ISO 22800. I have corrected out some of the luminance and chromance noise and I am perfectly OK with what remains. Getting the shot made me happy, even if the noise is high.

Posted on

Not A Spectator Sport

How could you sit still at a time and place like this?

For most of us, I believe photography is not a spectator sport. We only learn a little by watching other work, even great photographers. Photography is craftsmanship and creativity and vision. These have to be developed. Watching only helps a little.

It’s a first person experience

I have written before about life and our art not being a spectator sport. To me, this is still strongly true. But I’m taking a slightly different direction here. Many of us take workshops or watch videos to observe other photographers taking pictures. I watch a lot of videos, but I have to realistically ask why. What is gained by it?

The reality is that we do not learn our art or develop our vision by watching someone else. Unless they are an exceptional teacher. But even then, it does us little good until we have internalized it and made it our own style.

Craft

Photography is a craft. Any craft has to be learned and then practiced over a long period to master it. So I’m not saying there is never anything to be learned by watching another practitioner work. I’m just saying that it is a somewhat dangerous act. We must be careful what we are taking in.

Some instructors are good about talking us through what they are doing and thinking. Giving us insight into their thought process. This is very beneficial. As long as we carefully examine what we are learning and deciding what to keep and what to leave.

The basic craft aspects of photography can be learned, to some extent, by watching a good instructor. Then we have to practice, and practice, and practice… Repetition, evaluation, mistakes, trial and error practice that teaches us how to do the craft. So there is a little instruction then a lot of self-teaching.

It is easy to make the mistake of trying to mimic a teacher. We respect them and are in awe of their ability, so we want to be just like them. Don’t do that. They have their vision, we have to create our own.

Creativity

Our art is not really ours if we are just copying someone else. The instructor we admire and copy may be very creative. Doing the same thing does not make us creative.

Maybe I’m wrong, but I have studied this a long time. A good instructor may inspire us to be more creative, they may challenge us, they may give us some good ideas, they may even give us some hints how to do it. But we cannot achieve creativity by watching them. It has to come from within.

Cole Thompson was tempted to copy the style of artists he revered, especially Ansel Adams. He famously started the idea of “Photographic Celibacy” – never looking at other photographer’s work. I think that is going too far. We can learn a great deal from studying other people’s work. But it worked for him and it emphasized the danger of copying other artists.

We don’t have to be celibate. But we do consciously have to maintain our own identity. Follow our own interests.

Vision

What we express with our art is our own vision. We each have a unique vision, unless we are slavishly copying someone else. A tendency when we are starting out is to try to copy someone, because we are insecure. We don’t think we have developed a “vision” yet.

I think Chuck Kimmerle insightfully captured the essence of it in an article in Nature Vision Magazine #1: “We can’t discuss style without mentioning vision. The two are related but vastly different. While style is fairly easy to describe, vision is much harder to define. At its core is who we are as individuals: our experiences, lifestyles, likes and dislikes, politics, spirituality, family, priorities, and so forth. Our soul. It is the story of our lives, a personal diary if you will, and is what makes us unique. Vision is what drives our style. Unlike our personal style, our vision rarely changes.”

This vision influences and comes through in the work you produce. We can’t help it. That is one reason why several photographers can be out together shooting the same area at the same time and produce a variety of different images.

So don’t worry that you don’t have a vision. You do. The trick it to let go and let our vision express itself. Don’t be concerned about it being different from what other artists do. Eventually you will recognize yours.

Who are you learning to be?

So watch other photographers and get what you can from them. But never loose sight of who you are learning to be – you.

Just this morning I watched a short tutorial on an aspect of Lightroom editing by a good instructor. He was very good about describing why he did every step of the process. It was a little valuable. But overall my internal dialog was “nope, nope, that’s interesting, not the way I see it, not the result I would try to get”.

Was he a bad instructor? Not at all. He is good and quite well known. Was is a useless genre? No. He was editing a landscape image. that’s reasonably close to what I do.

So why did I reject a lot of what he said? Because I am pretty confident in my craft and vision. I can watch another photographer and not be intimidated or pressured. This is because, for the most part, I have learned to be me. I know what I want to achieve. I appreciate picking up tips on doing the craft better, or easier ways to get to the product I want, but no one is going to (very easily) convince me to become something I’m not and don’t want to be.

How do you learn?

So how do you learn? Do you intently study a master and “try on” their style for a while? Do you study basic theory, such as composition, design, color, etc? Do you go to workshops where the instructor shows you where to put your tripod and what settings to use and how to set up your shot to get the same results he got?

Any or all of this and anything else you do is fine, as long as it works for you. But never forget the purpose of studying is to learn to be a better you. Not a knock-off copy of someone else. No matter how much you admire them. Personally I would shun experiences where the instructor seems intent on making you a copy of them.

Most of us are self-taught. That is, we do not have a fine art degree with a specialty in photography. We learn through various formal or informal methods. Make the most of it. Learn from every opportunity you get. But you will grow fastest by getting out and working and evaluating and learning from the results. Pick up ideas and techniques anywhere. But don’t ever forget the goal is to grow as an artist and find your own path.

So is it true that photography is not a spectator sport? Well, that’s a little bit of click bait. Be a life long learner. Eagerly watch other photographers work. Listen to what they say. But discard what does not apply to you. Never forget the goal – be you.

Today’s image

I couldn’t find a single image that illustrated this idea of “not a spectator sport”. I guess because I have always believed it and gone my own independent way. This image was chosen because maybe it shows that, if you are in a place like this at a time like this, shoot! Don’t watch someone else. Make your art.

Posted on

Learning Takes Effort

Avalanche

Contrary to the forest of web sites and blogs and newsletters promising you easy hacks, quick fixes, and effortless skill building, let me disillusion you. Learning takes effort. The more different your new subject is from what you already know, the harder it gets.

Curiosity

I think I can speak to this. In a previous post I said I was afflicted with curiosity. That is stated in a humorous way, but I am very serious. I have a deep and burning curiosity about many things. Learning new things or just extending my knowledge of an area occupies a lot of my time.

I’m the kid who, way back in the days before internet, would spend hours browsing through encyclopedias. Any one remember what those are? Looking up a word in the dictionary could take me an hour. I kept getting sidetracked by other interesting words I see along the way.

It also drives my approach to photography. I am more interested in finding interesting things, no matter what they are, and making interesting pictures from them than I am in looking for particular subjects or iconic scenes. Almost anything can be a good subject if you can “catch” it doing something interesting.

Learning

But if we want to go beyond just an idle curiosity, we have to learn new things. That requires significantly more effort.

Learning demands a commitment of time and study and effort. And dedication. And drive. It is not easy to master a new subject or field.

But what is learning, really? It is the ability to independently use knowledge or apply a skill over time and in new situations. As opposed to just recalling facts. The American education system is woefully deficient on this. Our schools teach and measure mainly performance, not learning. That is, what is 3 times 4? Who gave the Gettysburg address and what year?

It is not that performance is unimportant, but recalling facts for a test is just not making us much more educated. For instance, I love studying history. There are usually several history or biography books around me in various states of completion. But I only care about dates as much as required to be able to put things together in a timeline. It is much more interesting and enlightening to find out why things happened, why to those people, why then, what is the back story.

Failing

Actual learning is hard. It requires work. And, sorry, but that is the way it has to be. We learn more deeply when we have to work at it and when we fail.

Fail?? Yes. I don’t mean like repeat a grade. Failing as in try to use your knowledge and find you are incorrect or inadequate. Then you have to concentrate more on it to learn the right way. This reinforces the correct way and you know and remember it better.

A small personal experience: one of the things I am learning is French. It’s a long story. You know that old expression that it’s hard to teach an old dog new tricks? That is true for me when it comes to learning a new language. A theory, that seems to hold true, is that it takes repetition and mistakes to learn new words. Repeating them over time builds memory, but repeating the ones you miss more often reinforces them.

My point here is that the purpose of learning is to be able to use the knowledge or skill independently and with some confidence. We usually can’t do that until we have tried and failed and reinforced it and practiced. This involved making mistakes and correcting them and building on that. This applies to our everyday lives and our art. I don’t recommend that as a way to learn brain surgery.

Interleaving

Another learning topic that I have found to be very relevant to me is called interleaving. Conventional wisdom says to practice one thing intensively until it is perfected. Then move on to the next thing. If you are learning tennis, then, you should practice forehands over and over until you have mastered them. Then go to backhands. Etc.

Interleaving, though, says you should mix a variety of things, even if you have not mastered each of them. So in the tennis example, is says it would be better to mix forehands and backhands and volleys in a match-like experience. There is evidence that this is a better way of learning.

I am sold, because I do it in many ways with good results. I believe interleaving the activities forms more and stronger connections between different components you are learning. The long term benefit is deeper understanding or skill.

Learning builds on itself. The more diverse things we learn, the easier it is to learn other new things.

Dots

Steve Jobs famously called it “connecting the dots“. He stated it best in his 2005 Stanford Commencement Speech. The picture is that we learn many different, unconnected, things and have experiences we may or not welcome. We can’t look ahead to see how they will connect. But somehow, looking back, they form the path we have taken.

I love his example of how his audited calligraphy course led to personal computers as we know them. Read it!

In order to connect the dots, we need a rich set of “dots” in our lives. Because the more we know the more there is to connect to.

Photography

What does this have to do with photography and art?

I am suspicious of typical ways photography is taught. A linear process seems logical and fits well in a course outline, but I believe students should be out making bad pictures from day one. They should have daily or weekly project assignments. As they see their results they can be shown what aperture or shutter speed or ISO or lens choices could do and why they would want to make tradeoffs. They can be shown compositional problems they made and pointed to great artists to see the choices they made. Students can quickly get the hang of manipulating the camera to get results they want and can then get on to the harder part – figuring out what they have to say.

But in an environment of experimentation and unlimited choices. After all, we are learning to create our vision.

I believe we should be life long learners and open to new influences. The attitude that we know all we need to know is dangerous. We can always learn something new and get inspiration from new sources. I recently saw work by a contemporary artist I had never heard of. But some of Aline Smithson‘s project The Ephemeral Archive touched me in new ways and opened windows of inquiry for me. And I didn’t think I liked contemporary photography.

Learn to be comfortable with being challenged with new ideas and with failing. It is one of the best ways to learn. It’s not supposed to be easy.

If you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You’re doing things you’ve never done before, and more importantly, you’re doing something.

Neil Gaiman

I want to hear your comments! Let’s talk!

Posted on

Craftsmanship

Hand held, old digital camera, estimated metering.

I have written a few times about how intent and expression are more important in a photograph than craftsmanship. I don’t want to leave the impression that craftsmanship is unimportant. It is critically important for a serious artist.

What is craft?

Craft is defined as skill at carrying out one’s work, or an activity involving skill in making things by hand. I believe an artist first has to be a craftsman. Proficient with his tools. Using our tools and equipment must be second nature.

Craftsmanship is usually a learned skill rather than an innate talent. Sure, some things are easier for some people than others, but it still has to be learned. Lots of investment of time and practice.

When we get skilled at the craft, the mechanics recedes into the background. It becomes a support and enabler for our artistic vision.

Perfection doesn’t make a picture

I have argued before that perfection of craft does not make a great image. The classic statement is Ansel Adam’s quote that “There’s nothing worse than a sharp picture of a fuzzy concept”.

It might be better to say craft alone does not make a great image. It is a table stake. You need it to get in the game. An excellently crafted image may not be great, but a poorly crafted image is very seldom great.

Craftsmanship is the base

Craftsmanship is a base we build our work on. But it is only a base, one of the legs of the stool. We also have to have vision and creativity and the drive to express them. I believe this expression cannot happen without solid craftsmanship.

I have said before that photography is one of the most technical of the arts. We are dependent on our equipment. Knowing how to use it correctly and effectively is absolutely critical to success.

We must study and practice and drill until it becomes second nature. Have you trained your hands to just “know” where the camera controls are? Can you use them in the dark? With gloves on? Can you quickly and almost instinctively determine the exposure solution that aligns with your intent for the image? Are composition and framing decisions happening rapidly in the background with little conscious thought?

When you’re out in the field working a scene you like, you don’t need to spend time juggling the technical tradeoffs in adjusting the camera. This distracts you from the artistic side. For instance, recognizing that this scene needs about f/8 to get the depth of focus you want and, since you are hand holding, at least 1/200th second shutter speed to insure a crisp image. Given that, are you willing to go to ISO 1600 to get these settings? These decisions should be almost instantaneous and subconscious.

This is not to say you are operating by habit or on automatic. Quite the opposite. It is a state of flow. You are channeling all the craft you know to focus on the moment at hand. It is exhilarating.

Photography is a craft

Photography is a craft. Most arts are, but it seems more obvious in photography. We cannot create without our tools. And we cannot create well unless we are proficient with our tools.

Let’s take a quick look at the chain of technologies required in photography.

On the capture side there is the camera, of course. They are not trivial anymore. The user manual for my Nikon Z7-II is 866 pages. That just describes all the settings available, not how to use them. Becoming skilled at using one of these is formidable. Luckily, most of us only use a subset of the capability.

And how much data do I need for what I am doing? Shooting full frame 40MPixels and above requires much more refined technique to achieve great results. Maybe what I’m doing today would be just fine with a 20MPixel APC camera. Do I have large and fast enough memory cards for my shoot? Enough batteries?

There are the lenses and filters to select. It takes training to understand the effects possible and how to select the right look for the situation. Should I use a zoom lens when I know it is theoretically possible get a little better sharpness with a prime lens?

Am I in the camp that says all images must be shot on a tripod? Or am I a hand-held guy? Or either, depending on the situation? Shooting hand held, do I know the techniques to get maximum sharpness? Or the techniques to shoot moving subjects?

What about capture file formats? White balance? Camera profile settings?

Processing

That’s just the capture of an image. If you shoot RAW images, which I hope you do, the images are useless until they have been processed intensely.

First, they have to be transferred to your computer. Do you have enough storage? My main image storage is currently using over 7 Terabytes. Then there’s multiple backup of that.

If you are processing high resolution files you will need significant computing power. Lots of memory and graphic processing power. And a great, color calibrated monitor. Hopefully of 5K or more. That power is required to be able to process images fluidly without having to wait for the machine to catch up. Waiting really breaks your concentration.

And of course, you use a color balanced process. Your camera and monitor are calibrated and you are using a wide color gamut system like ProPhoto RGB. A wide gamut allows lots of freedom in editing.

All that processing takes a lot of time. So when you go out and shoot 1000 images, don’t forget that they have to be processed, and culled and keyworded and filed.. For me, processing an image takes anywhere from 1 minute to 8 hours.

Output

How you process an image depends on what you are using it for. Getting something ready to post on social media probably just requires some color and tone correction and maybe cropping. Preparing an image for a print could take a long time.

Let me take the path of going to a print, since that is my preferred utilization.

A print is a physical object that is perceived different from an image on a screen. The viewing time of a print is usually much longer than an image on screen. As such, it generally needs to be processed to a higher standard. Very careful spotting – removing sensor dust spots – is critical. Spending time removing or mitigating distracting elements is usually important.

Many of the remaining decisions center on the characteristics of the final output. What size will the print be? What paper will be used. All papers have different properties and strengths and weaknesses. The paper can make the print look very different. Is it matte or glossy? Coated or uncoated? Heavy or thin? What color is it – papers aren’t necessarily white.

To get an estimate of the final result requires turning on proofing during the editing. The computer attempts to simulate the final printed result. Of course, to do that, you need accurate profiles for the paper and printer combination. But that is just an approximation. It may need more than one attempt. And what about out of gamut colors on your print? Handling those can be tricky and exasperating.

Build on it

That is a lot! And this is just talking about still photography. Photographers have to be expert at most of what I described. That is some of the craft involved. All of this craft has to be used intelligently in the process of making a great image. It’s why I say that photography is one of the most technical and craft-based arts.

But as much as we sometimes like to burrow into the fun details, the craft is a base. Build your base solid. But on top of the base, we need to build our artistic sensibility, our vision. We have to establish our style.

Craft means knowing how to use your tools to achieve the results you want. Maybe that is an ultra crisp, tack sharp image. Maybe it is a flowing abstract with no sharp pixels. Yours might run to dark and moody and underexposed. Somebody else might be bright and high key. Those are your choices. Whatever your vision leads you to do, it is your craft that allows you to achieve it.

Posted on

License to See

Car wash abstract

I have written before on learning to see. This is a follow on to that and talks about a psychological tool that works for me to see more and move to actually making images. When I pick up a camera, that is a license to see.

We forget to see

I have made the point many times that as adults, we become so busy and caught up in daily life that we protect ourselves by closing our world down around us. Our interest and curiosity doesn’t extend much beyond our immediate problems of every day life. Job, kids, kids activities, paying bills, maintaining the house and car. It seems like there is not much room for anything else.

Yet every day as we go to work or kids activities or shopping, we pass through a beautiful and interesting world. But mostly we don’t pay much attention to it. It just doesn’t seem important because we are focused inward.

We are robbing ourselves of a lot of joy and good mental health. Learning to see more of what is around us is great for our head and our attitude.

We have to relearn to see

I hate to repeat myself, but I think this is important. Seeing more of what is around us is a learned skill. One that can be developed with practice.

We used to do it. As kids we were interested in everything around us. This gets beaten out of us as we grow up. But the fact that you used to do it means you still could. It’s a matter of relearning and practicing.

It’s also a matter of valuing it and increasing its importance. If you are an artist, I believe it is a vital skill. Isn’t that one of the important things that distinguishes us from non-artists? We observe, we see things, we see things different. To see things different, we have to first see things.

Awareness comes first

Seeing, in my view, starts with 2 things. First is curiosity. Curiosity helps us eagerly seek to find out about things. It gives us the motivation to see. Second is awareness. Curiosity is necessary, but it can be directed inward. We can get lost in our head and not do anything external. Awareness helps get us in touch with the world around us.

In more flowery language than I usually use, Eden Maxwell says: “To be aware is the prerequisite for experiencing life beyond illusion, your own, or the cumulative self-consciousness amassed by society.”

Awareness requires us to be, well, aware. Sorry. It seems too simple and obvious, but do you actually practice it? We can practice doing it. Driving to work tomorrow, after you pass a car ask yourself: what color was it? What make was the car? What color shirt was the driver wearing? When you go for a walk stop and look at a tree you pass all the time. Did you ever really notice the pattern of the branches and the shape of the leaves? Did you see that bird’s nest? Pay attention to the reflections in windows you go by.

All these things add to your awareness of things around you.

My hacks

But these things require work, or worse, thinking. It seems most people don’t want to do those things anymore. Everyone wants a quick hack to make it seem like they can do something.

So let me present 2 tools that work for me. I will call them “hacks”. For me they are a license to see. They trigger action.

The first is picking up a camera. Yes, that simple. With a camera in hand I become immediately focused on making images. It amazes me how this works, but it usually does. I may think I am being aware and thinking like an artist, but a camera in hand focuses me. Most often I fall into the zone and flow and move toward actually making images instead of just thinking about doing it. The camera is compelling. This usually works even with an iPhone in hand.

There are times, though, when my head just doesn’t seem to be in it. Then I have to go to the next hack: take a picture. Something happens to me mentally when the shutter clicks. The sound triggers years of muscle memory and behavior. It breaks the fear of not being able to find a subject. I am in motion now. The mental block is removed and I can go on creating images. This first frame may be intentionally a throw-away. It doesn’t matter how good it is. Now I am across the barrier and actively making images.

Artists

As artists, we have to be more aware of the world around us. We have to see better to help interpret life and the world to other people. Seeing is a learned skill that can be practiced and improved.

I hope these simple “hacks” – picking up a camera and taking a picture – work for you. They are tools I use all the time in my own life, especially when I am not feeling motivated. It gets me out of my head and actually moving and doing something. Once in motion things seem to roll along better.

Today’s image

Following my own advice, one day sitting, bored, in a car wash, I decided to pick up my camera and see what I could do. I am happy with the result. It was not planned, it happened because I held my camera and looked around. The world is rich in images and interest. We just have to see.