Limitations of the Contrast Slider in Adobe Camera Raw

Curve equivalents of Contrast Slider in Adobe Camera Raw at +25, +50, +75, and +100.

I’m working on an article, and it turns out the Curves slider in Adobe Camera RAW is very limiting. The graphic above shows the curves required to produce the equivalent of +25, +50, +75, and +100 with the curves slider. The most pronounced curve is the +100, and the least pronounced (from the 1:1 slope baseline) is +25.

I’ve been meaning to do this for a long time, and honestly I’m a little shocked by the results. Even at +100, the curves slider is weak sauce, and doesn’t even begin to harness the power of curves.

What I’ve seen so far makes be glad I bypass the contrast slider and go right to curves. I’m looking forward to running some more experiments and developing a more in depth article.

Processing Makes the Difference in Prints

Reflections, Tuolumne Meadows, Yosemite National Park

Not sure why your prints aren’t coming our the way you want? Want better prints? Then it’s time to look at how you process. 

Processing is where we take creative control over what a print will look like. 

The printer (output device) is supposed to be the dumb part of the process. It’s not supposed to interpret, fix, or change your processing decisions. It’s just supposed to render the processing accurately. 

A printer should be like a player piano. You put in a piano roll, and assuming the piano is in tune, you hear the music as the musician intended. 

Our file is the piano roll, and processing is where we decide what notes should be played, when, and for how long. 

Processing is where the really important stuff happens. Processing creates a file that tells the output device what to do; what colors to print, how dark and how light, how saturated, and what color balance. The output device isn’t supposed to be deciding those things, YOU ARE!

One of the challenges you may be facing is that making something look “good” on a screen is easier than making it look good in print. 

Screens are more forgiving because they they can’t display the same subtle variations of color, highlight, and shadow that a print can. They hide small (and sometimes not so small) differences in processing. This is especially true of phone and tablet size screens. 

If you are processing for web and social media, the screen becomes your final output device, and you can see it instantly in its final form. But not so with prints. 

There is always a screen to print translation as we switch from transmitted light (screen) to reflected light with ink on paper (print.) 

Prints are less forgiving of processing errors. Things that will hide on screen become glaringly evident on the print. The “pop” of a screen isn’t there to mask these processing errors. 

So when we’re printing, we need to learn how to “read” the monitor and anticipate what it will look like on the print. Like any art, that means practicing, gaining experience, and refining our techniques. 

Printing is sensitive to very small changes. If you can see the difference between a one point slider move on screen, assume you’ll be able to see the difference in print. 

So instead of trying to see if 50 contrast is better than 30, try and see if 34 contrast is better than 35. Or instead of deciding between a 5000k and a 4950k white balance how about trying a 4975k setting?

It may sounds like splitting hairs, but these very refined changes is where you bring out the magic in a print. I often spend half my processing time on an image going back and forth between small changes to asses their effect. I’m looking for the “perfect” setting that matches my artistic vision.

This fine tuning is really noticeable in highlights and shadows because  those tonal areas simply do not display accurately on screen.  So I rely on the info tool to read the numbers. This gives me a mathematic measure of what the print will show instead of the visual measure our eyes give us. For shadows and highlights, the numbers are more accurate than our monitor or eyes. 

Processing for print is a culmination of all your photographic experience and knowledge to express your vision. The more you grow your skills, the more you gain experience, the more satisfied you’ll be with your results. Next time you don’t get the print you were expecting, go back to your processing to make it better. 

Taming Large File Sizes in Photoshop

Working with high megapixel files in Photoshop can be a pain. It seems I’m routinely working on files that are close to a GB in size when I start adding layers to my 42MP 16 bit captures. New 61MP and larger cameras are just going to make that worse. 

While Photoshop can deal with these files, the disk space taken up by multiple versions of them, as well as for backup, plus save times can get to be a real drag. So how do we make it easier?

Well, this problem is nothing new. In my early days as a printmaker, working on 300 MB scans was a huge challenge. I remember when it took an hour just to do a 90 degree rotation, which gave me plenty of time to roam outside my cabin in Yosemite, but wasn’t very efficient. So I came up with a solution that I think you might find useful today. 

Here’s how it works. When starting with a large source file, like a 1GB scan or high MP capture, I make a copy of it and size it down to a reasonable size, say 8×10 inches @300ppi, which is a good size for proofing. Then I do all my processing on adjustment layers in Photoshop. This keeps the files small and quick to work on. 

When, and if, I need a larger version of the file, there is a simple process to transfer all those layers over to the high resolution original. 

My printmakers and I used this process on thousands upon thousands of files in my days at West Coast Imaging, and I even made a youtube video that demonstrates the process. One of these days I want to re-record these videos in beautiful HD (or 4k!), but I thought it was worth sharing the old videos because the process works the same, even on the ancient version of Photoshop depicted. 

Take a look and see if it’s a trick that can help in your toolbox. 

Adobe Enhance Details

Does the new Enhanced Detail feature in Photoshop and Lightroom really work? It does, at least for me. 

Heres an example of the same RAW file processed with Enhance Details on, and with it off. This is a screen shot at about 400% magnification. 

Normal Raw Processing
Processed using Enhance Details

You might have to zoom in to see this on your device, but when viewed at full resolution, I can clearly see that all the lines of the branches, and even the edges of the flowers are smoother and more refined. With it off, there is much more aliasing, very blocky in-fact. 

Enhanced Details may work better with some sensors than others. I’m hearing from photographers that see no effect, but I’ve seen plenty of examples where it does work. So you’ll have to try it yourself. 

For my Sony A7RII, it clearly does work, and this refinement of detail will allow me more options when applying unsharp mask, as well as resolving finer detail.  It’s now my default processing option. I just wish Adobe would integrate it better into the workflow instead of the current requirement to export to a DNG first.