Ed Schlotzhauer

An artists journey

Category: Photography

  • In Focus

    In Focus

    Focus, as an optical phenomenon, is unique to photography. But when we consider being in focus, there are other considerations besides the obvious optical one.

    Focus is unique to photography

    I had never considered this consciously, but it is only photographers who worry about optical focus. What is focus? Photography is created by imaging a three dimensional scene onto a two dimensional sensor via a lens. The lens has properties such as focal length and aperture that interact with the light passing through it to the sensor. The physics of imaging determines the thing we call Depth of Field (DOF). This is the amount of the the scene that is in acceptable focus. What is acceptable and what this means is the subject for another article.

    So as I am setting up a photo and making decisions about the focal length and aperture to use, my location relative to the subject, lighting, etc., it is also affecting the range of clear focus I will achieve. I praise the wonderful auto focus systems in modern cameras. They have come a long ways and do a great job if used properly.

    How is other visual art different? Well, a painting is created directly on a canvas. The sharpness or blurriness of elements in the image are determined by the painter by the marks he puts on the canvas. Since the resulting painting is a 2 dimensional thing, it has no depth to influence sharpness or DOF.

    Or take a sculpture. It is a 3 dimensional object. We view it with our eyes. Since our eyes and brain construct a sharp representation of the scene we are viewing, we see it as all in focus.

    Other focus considerations

    But the optical sharpness or unsharpness of an image is not the only consideration. An image can be in focus or not in other ways. How well did the artist understand his intent? Is it clear what we should see as the subject? Does it move us in any intended way?

    Worrying about or concentrating much on optical focus is a beginner issue. Once we mature that becomes just a natural part of the craft we take care of automatically. I don’t know any advanced photographers who worry about “nailing” the focus. Sure, there may be times when camera shake or something causes the image to be blurry, but it is seldom because the artist did not know how to achieve good focus.

    Intent

    Sometimes when we are shooting we are moving fast. Maybe the light or the subject is moving quickly and we are having to react in real time. Or maybe we are just too lazy to analyze what about the scene we are framing interests us.

    I believe very much in instinctive shooting. But our instinct has to be well trained and experienced enough to bring together a huge amount of decisions quickly and without much conscious thought. Until we get there, we need to be very slow and intentional about what we are doing.

    Ansel Adams expressed it well when he said “There’s nothing worse than a sharp image of a fuzzy concept.” Our image may be in perfect optical focus, but were we intentional about what we wanted to say?

    Similarly, Jay Maisel, in his brusque New Yorker manner said “If you talk with nothing to say, that’s bad. When you shoot with nothing to say, that’s worse, because you still have to edit the damn pictures.” Well, he’s right, too.

    Before we even raise our camera we need to go through a dialog with our self. “What draws me to this?” “What do I want my audience to see and feel?” “How can I frame and compose this to achieve my goal?” With experience this process becomes almost automatic, but I strongly recommend being slow and intentional with it for a long time.

    When I feel I’m going too fast I still will slow myself down and consciously go through the dialog. It helps to center me and clarify my focus and intent.

    Subject

    Do all of your images have a defined subject? A certain object or area or pattern that is the key that the image revolves around? If you are shooting portraits or street scenes that may seem obvious. But even then, is it conscious?

    In a video I watched of Jay Maisel shooting street scenes in Paris, one of the images he shot was of a girl riding a scooter in a park. It was a sweet and nice image. But when he showed it and described his reason for taking it, we see that it was captured at the perfect moment when her head was up and she was kicking her pushing leg dramatically. A perfect moment. That gesture, as he terms it, made it a beautiful image.

    So in this case the subject wasn’t just a girl riding a scooter in a park, it was her posing and moving in a very characteristic way that gives a dramatic insight into her personality. He moved beyond the simple surface subject and opened up a deeper insight.

    Shooting the eye of the bird

    When I was learning to shoot (archery and guns) I was taught a simple but impactful lesson. You have to aim for what you want to hit. Duh. But not so simple or obvious as it sounds.

    One expression of it I heard was a story about an archery master teaching pupils to shoot birds. The students arrows were wildly all over. The master almost always brought down a bird. They asked him why. He said they were shooting at the bird. He was aiming at the bird’s eye.

    I have seen the similar effect in hunting, even in modern times. If you are trying to shoot a deer in the woods, if you shoot “at the deer” you will likely miss. Pick out the exact point you want to hit and aim carefully for that. Your percentage will go way up.

    So in our art, the subject isn’t necessarily everything in the whole scene or even that lovely grove of trees. What is really key, important? Pick what is really the subject and make it the basis of the image. The eye of the bird. This may seem nearly impossible in a landscape. But think about it. Give it a try. See if you can’t pick out what is actually the key point in the scene. Make sure it is treated properly.

    Experience

    But even more important and powerful than a clear subject is the experience we bring to our viewer. Photographers, in particular, often get caught up in the technology or craft and sort of forget abut the viewer.

    It’s kind of like what Ansel Adams said about there being nothing worse than a sharp image of a fuzzy concept. If you don’t know precisely what you intend the viewer to see and feel, they probably won’t figure it out, either. Then we’re both disappointed.

    Clear focus and optical sharpness is often important, but will probably not be what makes or breaks a great image. Having a distinct subject is also important, but also will not be the deciding factor. The artist must have a clear vision of the effect he wants to create in the viewer. Everything about the image must work together to achieve that goal. That is being in focus.

  • Fine Art

    Fine Art

    Fine art is a very nebulous term. I don’t like the term, but I don’t have a suggested replacement. What is “fine art” photography? How do I know if I am doing it? Is there a right and wrong way to do it?

    Photography genres

    Photography is a large domain. It contains many specialized disciplines within it. Each has unique focus and techniques.

    I will not attempt to list them all. I don’t even know them all. But some that occur to me are portraits, street photography, photojournalism, architectural photography, food photography, commercial photography, fashion photography, macro photography, and landscape photography. Cross-cutting differentiators within that are things like High Dynamic Range (HDR), Intentional Camera Motion (ICM), and black & white.

    In addition, the majority of the photos shot in the world every day are on cell phones. And a lot of these are selfies used to make other people think we are having a better time on vacation than we really are.

    Each of these areas has different goals and motivations and markets. It is very hard to talk about “photography” in general.

    What is Fine Art?

    But narrowing it down, what is “fine art photography”? How do you know if you are doing fine art?

    Fine art photography is distinct from most other genres of photography in that it is first and foremost about the artist. It is not about capturing what the camera sees; it is about capturing what the artist sees. In fine art photography, therefore, the artist uses the camera as one more tool to create a work of art.

    One thing you should never hear asked about a fine art image is “is that the way it looked?”. It is not intended to be representational. That is, unlike traditional landscape or photojournalism, it is not a literal representation of what was there.

    What are the rules?

    We have to define our own rules. This form of art is about expression and interpretation. I want you to participate in what I saw and felt about the image. That may be considerably different from a straight photograph of the scene.

    But depending on the situation, sometimes the captured image is the artistic impression I want. It is not a rule that an image must be modified extensively. There are no rules except those you adopt. If I am able to achieve my intent in camera, so much the better.

    When I capture a scene for art, I consider it to be raw material. It needs to be shaped and molded to become the final image. So even if the captured image is essentially my final vision, approaching it with this attitude gives me more freedom to be more creative. When I expect to modify my images I have little inhibition to doing it.

    Politics and causes

    I try to avoid politics in my work, but that is a personal choice. Some photographers are very caught up in a cause and want to do work to support it. You might consider Ansel Adams and Galen Rowell to be advocates for the Sierra Club. David duChemin does publicity for the charities and non-governmental organizations he is involved with. There are many more examples. It is natural to want to use your talent to support things you believe in. I do not make any judgement one way or another on that.

    I believe, though, that the first job of an artist is to make art. This is completely my own value that I cannot bind on anyone else. I see many artists get so caught up in their cause that everything becomes deathly serious. There is no more fun and enjoyment. No more creativity for its own sake. Everything is pushing their cause, and if you don’t agree, then you are evil.

    To me, the end result of this is that you become a propagandist and cease to be primarily an artist. If that is what you want, great. But it seems very difficult to balance creative, inquiring, free ranging art with propaganda. One or the other will be dominant.

    I do fine art

    Whatever fine art is, I have concluded that is what I do. I want you to feel what I was feeling, and see what I thought was significant. Whether I achieve that in-camera in one snap of the shutter or through something that is edited extensively or even composited from multiple images is immaterial. No more important than how many layers of paint a painter applies to his canvas. He does what he feels he needs to do.

    My work is intended first and foremost to satisfy my creative urges. It exists purely for its aesthetic qualities. I am my primary audience. No one gets to tell me, no, you should do this. Well, my wife can, but even then I may not listen to her.

    My work is intended to be art, not documentary. I am not presenting literal truth, I want you to respond to it emotionally. And for an introvert like me, dealing in feelings is a stretch goal.

  • Limiting File Size

    Limiting File Size

    In a previous article I talked about the “bloat” that happens when we edit in Photoshop. Is there anything we can do about it? Should we be concerned about limiting file size?

    RAW vs Tiff

    RAW files are fundamentally different from Photoshop files. A RAW file captures and preserves the data directly from the camera sensor. This data still contains the artifacts from the Bayer filter technology, that is, each pixel represents 1 value of red, green, or blue. Data in this form cannot be shown on your computer monitor until it is processed and expanded by a RAW converter like Lightroom Classic.

    It is very important to realize that this data is unaltered, no matter what fancy processing you do in your RAW editor. The adjustments you make are kept as a collection of “processing instructions”. These are applied in real time whenever you view your RAW file.

    Because of this design, Lightroom can only change the look of pixels. It cannot in any way add or remove or alter individual pixels. No matter what it looks like on screen.

    For instance, even if you use the Healing tool to completely remove a person or object from the picture, the original data is always still there. What it saves is instructions telling it what region to select and what region to copy from. This processing is applied, again, each time you view the image in the editor. Actually, it usually just keeps an edited preview of the image to show quickly, but that is getting too deep.

    Photoshop manipulates pixels

    Photoshop, though, is the heavy duty pixel pusher. It has no moral imperative to prevent you from doing anything to image data. You can freely add or remove or alter or stretch or shrink or copy over anything. Unless you take steps to edit non-destructively (more on that later), you can remove something from the image by simply copying other pixels over the area you want to remove. The original data is permanently gone. Photoshop doesn’t care.

    To do this level of manipulation requires Photoshop to expand the original RAW data to a pixel structure. The pixel data has 3 values, red, green, and blue, for each pixel and each of the values is probably 16 bits if you are editing in one of the “safer” color spaces. I recommend it. This expansion automatically makes Photoshop’s file size at least 3 times larger than the RAW file.

    Once the file has been expanded to pixels and edited, there is no going back. It cannot be reprocessed back into a RAW file. You can’t put the genie back into the bottle.

    Even RAW files can get big

    I am presenting this in a rather black & white (metaphorically) contrast. RAW file editing is no longer immune from growing quite large. The “culprit” is masks.

    It used to be that RAW processing was rather coarse and simple. If I adjusted the exposure of the image it applied to the entire image. And the processing instruction was small and simple. This is the literal data that is saved for that adjustment:

    crs:Exposure2012=”+0.65″

    Don’t worry about the exact meaning of all of it, That is for the Engineers. The point is that only these literal 24 characters are stored to change the exposure of the entire image.

    But then the designers at Adobe and others created very useful and necessary magic. We can mask areas and selectively adjust them! This is an awesome and very welcome change. It pushes back the boundary where we have to go to Photoshop to finish our files. These masks and edits are stored as text with the other processing instructions. As you might guess, it can get large.

    After doing a lot of masking and editing I have seen some of these “sidecar” files grow into 10 megabytes or more. So if my original RAW file is 50 MBytes and the editing instructions add another 20 MBytes, that is quite a lot bigger. Still nothing like going to Photoshop, but I needed to point out that RAW processing is not entirely free.

    Non-destructive editing

    Please give me a moment to plug a non-destructive editing style in Photoshop. Photoshop can do amazing and totally un-undoable things. I know that I often change my mind or have new insights about an image after it ages a while. So weeks of months or more after an initial edit, I may look at an image again and see a different direction to be taken. If the Photoshop edit has gone down a path of no return, this can be hard.

    Sure, I could go all the way back to the original RAW file and start over, but this is usually not what I want to do. I don’t want to repeat the hours of detailed work I already did. Typically there was a branch, a fork in the road while I was editing. I chose one path and later I decide I would like to explore the other one.

    With discipline, Photoshop edits can be almost totally non-destructive. This means you can undo any decision later. Or perhaps strengthen or reduce the effects of an edit.

    Probably 2 techniques serve for about 80% of the goal of non-destructive editing. The first is to use a new blank layer for pixel changing edits. So if I want to remove an element from the image, I will typically create a blank layer, then use stamp or move to overlay changes onto the image. the original information is still there is I later want to expose it or do a better job of removing it.

    The second powerful technique is adjustment layers. Use adjustment layers rather than doing adjustment directly to the image layers. This allows the adjustments to be changed in the future. It also allows for masking to limit the effects to selected areas.

    Steps to limit Photoshop file size

    It is a tradeoff: do all your processing in Lightroom or go into Photoshop. Adobe and others are constantly pushing out the boundary by giving us more and more power and capability in our RAW editors. This is very welcome.

    But there comes a point when we may have to do things Lightroom cannot do. There are things we can do to limit the overall Photoshop growth to the minimum, about 3 times the original RAW size. Basically, these destroy the non-destructive edits I recommended before. So all of those edit layers can be flattened down before saving the file.

    This commits the edits permanently. They can’t be undone in the future. But the file size will be smaller. And rasterizing smart layers will save a lot of space. Also making changes permanent.

    If it sounds like I am negative on doing this, I am. Once I invest a lot of time editing an image in Photoshop it becomes the “master” image. I usually want to keep the freedom to change my mind.

    Why bother?

    Maybe it’s the wrong attitude, but I try to act as if the file size does not matter. A large file is just a price to pay for the ability to craft an image I am pleased with. Disks are relatively cheap.

    It’s a pain when I out grow the 4GByte limit for Tiff files and have to go to a .psb file. Lightroom does a bad job of the user experience. But I put up with it because I want to hold all that work in an editable state.

    So officially my attitude is “why bother?”. Don’t sweat the file size growth. You went to Photoshop for a reason. Use it. Do your work. Files get large, It’s just a cost of doing business.

    Today’s image

    This is an example of a very simple looking file that grew dramatically. The final Photoshop file is 22 times larger than the edited RAW file!. From 61.5 MBytes to 1.34 GBytes. It sure doesn’t look that complex. It was necessary and I would still do it the same way again.

  • So Big!

    So Big!

    Our modern cameras have lots of pixels. This is a great benefit for us, especially if we want to make large prints. But sometimes the files we are editing can get so big we have trouble dealing with them. Why is that?

    Sensors

    I have made the point before that our modern sensors are amazing. The camera I shoot captures 47 MPixels for each shot. That’s 47 million pixels. There are sensors that go up to 150 MPixels in some medium format camera bodies. I haven’t seen the need to move to that yet.

    Why do we need so many pixels? Some will state that we don’t. That it is just pixel envy that keeps us seeking more. There is a good argument that about 20 MPixels is enough for the vast majority of applications.

    That is for you to decide for your own needs and preferences. I can state that I believe the quality of our images has moved far beyond film days. Digital images produce the sharpest, most detailed, most colorful, most editable results that have ever been possible, except in some very niche applications. There is no going back.

    Raw files

    Raw files hold the information that comes directly off the camera sensor. There is minimal processing done. I have discussed Bayer filters and how we get color images. The Raw file is not really an image we can look at yet.

    But there are some great features of raw files we need to be aware of. First, this is the closest we can get to the exact data that was captured by the sensor. Little processing has been done. All the processing and interpretation of the resulting image is ours. Among other reasons, this is a reason to always shoot raw instead of jpg files.

    Second, the nature of the raw file is that it cannot be edited. The original data is always preserved. Yes, of course, I can go into Lightroom Classic (I will always call it just Lightroom from here on) and do amazing things to the image. All of the changes are saved as what are termed “processing instructions“. The original data is never altered. It cannot be altered.

    One of the things this means is that years from now when I have new tools or change my mind about how I want the image to look, I can go back and re-edit it. I can even reset to the original captured bits and start over. No data is ever lost. This is a great things.

    And thirdly, the raw file is relatively compact. My camera captures 47 million 14 bit resolution sensor values, each either a red or green or blue data. It is not yet “demosaiced” to expand the Bayer sensor data to full color data for each pixel. In addition certain meta data values are stored in the raw data. Things like the camera and lens information, capture time, my copyright information, etc.

    Raw file size

    My camera is set to do a lossless compression of the data before saving it. So no data is ever lost in the process. Looking at a randomly selected file I just shot, its file size is 58.08 MBytes on my file system. The size of my raw images varies because of the amount of lossless compression that can be done on each image.

    But think about this a minute. I captured 47 million 14 bit images. This should have been 94 MBytes of data, not counting the extra meta data. I am assuming they store the 14 bits in 2 8 bit bytes. I don’t know if that is true. This means the saved raw file is even smaller than the data that came off the sensor. As I edit it and add processing instructions, the file gets somewhat larger, but seldom huge.

    Photoshop bloat

    Now I sent this raw file to Photoshop and immediately saved it. No editing. The file size is 229.16 MBytes! It is about 4 times larger! And I didn’t even do anything to the image! Why is this?

    Well, Photoshop edits pixels, each a triple of (red, green, blue) values for each pixel. Photoshop expands the Bayer data to the flat grid Photoshop needs, This is what Photoshop works with and what is saved. That automatically makes the file at least 3 times its original size. The raw file was compressed, that probably accounts for the difference.

    Now to illustrate more of what Photoshop does, I added a blank layer and used the spot healing brush to correct a couple of blemishes, very little. Saving the file again grows the file size to 548.08 MBytes! It doubled!

    To continue the demonstration, I added a curves adjustment layer and saved the file again. Now the size is 632.72 MBytes.

    The difference

    It is clear that LIghtroom and Photoshop show very different behavior when editing images. This is because of their nature and design.

    Lightroom is called a parametric editor. It does not modify the image data, Rather, it keeps a list of processing instructions to tell how to change the look of the image when it is viewed.

    Photoshop is a pixel editor. It can add/delete/modify pixels at the most detailed level. You have to be careful that you do not lose the original data. It does not care. It will do any amount of change you request. And it has the power of layers to build of levels of modification. This can lead to huge file sizes.

    Did you know that there are maximum file sizes for Photoshop files? Standard Photoshop psd files can only be up to 2 GBytes in size. Tiff files can only be 4 GBytes. I exceed these limits a lot. The only choice then is to switch to Photoshop’s “big” file type, the psb. It can grow much larger. Actually, it can handle us up to 4.2 Billion GBytes. That will work for a while. 🙂 Unfortunately it is not a choice to automatically use it.

    Any solution?

    Well, there is the “if it hurts don’t do that” solution. Stay in Lightroom for most of your image processing. Only go to Photoshop for situations that Lightroom cannot handle. This is a good strategy and I use it.

    But if you have to do that detailed pixel grooming and you have to use many layers to process your image to your taste, accept it. The cost is much more powerful computers and larger and faster hard drives. I have both. It is a cost of doing business the way I want.

    Editing large files in Photoshop will lead to very large files on your disk. I have a lot of multi GByte files. That is, some of my files have grown to about 100 times the original captured file size! Ouch. I can’t do this routinely. It has to be for special images that are worth the time and file size to do this.

    When you have to call out the big power tool, Photoshop can do almost anything. But the cost can be high.

  • Don’t Rush

    Don’t Rush

    It seems most people rush to share results of any photo outing on social media immediately. But why? Does that make sense? Wouldn’t it be better to wait until you have a few great images ready? Let your work and vision mature.

    Don’t be a slave to social media

    I am freely admitting my prejudice here. I am not a fan of social media and I don’t participate in much of it.

    A lot of people I see feel compelled to post some of everything they do to social media as soon as they are within cell phone range. They put themselves under a lot of pressure. If you are dependent on the “likes” and upvotes you get online, you serve a very capricious master. And what if several people don’t like your work? What do you do? Change? Abandon what you are doing? Who is deciding your style and artistic interests?

    It’s not collaboration

    Is your art a group process or are you, the artist, solely responsible for your creations? “Collaboration” is one of those powerful sounding words thrown around in corporations these days. I’ve been there. I know there is a place for it in corporations where they’re trying to achieve at least an average result and wanting to make several special interest groups feel included. But I claim it is not appropriate for our art.

    Our art should be a highly personal expression. To a degree, it should not matter if it is not universally popular. Maybe we should not try to be universally popular. If it appeals to the masses and looks like “everybody else’s” art, is it a creative expression? My work is going to be my own total responsibiity.

    Ask why you are sharing

    If you are sharing on social media, I think it is important to ask why you are doing it. Likes feel good, but do these people actually buy your art? Sorry to be crude and talk about money, but isn’t that the grease that lets things run?

    If your social media strategy is well tuned and you have a good mailing list of people who are real customers and eager to buy your work, good for you. That is a reason to publish on social media.

    But, how fast should you do it? Conventional wisdom on social media is that you should show work in progress. This is where I tend to disagree. I believe we should never show our work until it is ready.

    Curating takes time

    A lot of my art has to mature. I may have an idea of something I want to pursue, but my first attempts are usually not representative of where I will end up. It is typical for me to have to work with an idea or a subject for a while to refine my view, to understand my underlying feelings about it. The ideas have to age, to mature some. This can take from days to years.

    So if I’m shooting a project, the first images I shoot may be scatter shots all around the idea I haven’t really “discovered” yet. After doing work on the project a while I begin to understand what I really want to say and what will make the best visual presentation. It could be that one or more of those original images actually work for the final project, but that is almost an accident. It usually means I shot an image instinctively even though I did not consciously understand where I wanted to go. But projects can last from weeks to years, so my vision likely evolves over that time.

    In a similar way, it is sometimes the case that I shoot an image, I like it, but something tells me it is not complete yet. Maybe it needs to be worked as a low key black & white image. Maybe I need to do some serious cropping to isolate the part that really interests me. Perhaps I need to composite it with some texture or other elements to complete the look. Or maybe it just isn’t as good as I originally thought.

    Be patient

    If you’re like a lot of photographers, you shoot a lot of images when working a scene. Sometimes it is not immediately clear to me which is the pick of the group. I often have to live with them a while to understand what I was really drawn to. It may take days or weeks before I can look at the set and say “this one” is the one that captures what I was feeling at the time.

    If I am under pressure to get a quick look out to social media, I would find that what I am publishing is not really representative of what I end up with. Maybe that is OK for you. But I do not want anyone to see what I would consider inferior work. A secret of most photographers is that they seem very good because you only see about 1% or less of what they shoot. They throw away or rework what doesn’t work before it ever gets out of their studio. What you do see is good.

    A line from a famous old Paul Mason ad said “We will sell no wine before its time.” I don’t know if this is still true or if it ever was, but the idea has merit. Don’t be in such a rush to get things out. Wait for them to mature. A few great images is more impactful than a bunch of mediocre ones.

    Today’s image

    This is a pano I shot earlier this year. At first it was a pick of the day. I really like the clouds and mountain shapes. After living with it for a while, though, I realized I do not like the foreground or the middle ground (the lower forests are too dark). And there is more visual clutter to remove than I wanted to do. So this went into the “eliminated” pile. There was another one that I liked much better.