The Oversharpened Photocopy Mistake
Okay. Last time we talked about saturation, and knowing when to stop before your tulips turn into traffic cones.
New lesson, same idea, different tool. Sharpening.
Sharpening is the slider that promises to make your photo "crisper" or "clearer." And it can. A little sharpening on a slightly soft photo genuinely helps. But sharpening is also the fastest way I know to ruin a picture without realizing it's happening in the moment, because on your phone screen it can look fine, and then you look at it later, bigger, and it looks like somebody ran it through a copy machine four times.
I know this because I did it to a photo of my parents.
The photocopy mistake
It was an old scanned photo, already a little soft and grainy the way scans from actual film prints tend to be. I figured, easy fix, bump the sharpness, done. So I bumped it. Still looked soft to me. Bumped it more. Still soft. By the time I stopped, the edges of everything in that photo had these hard little outlines around them, like somebody had traced my parents' faces with a marker. The grain wasn't grain anymore, it was static. It looked like a bad photocopy of a photocopy.
I spent about an hour on that photo, and every adjustment made it worse in a way I couldn't see until I backed out and looked with fresh eyes, which by the way is the same thing I tell you about exposure and contrast. Same rule, applies here too.
Eventually I did the only sensible thing. I hit undo, undo, undo, all the way back, and then barely touched it. A tiny sharpen, way less than my first instinct, and left the grain alone. It looked like an old photo. Which it was. That was fine.
That's opinion number five from me, the one I probably repeat the most in this class: most photos need less editing than you think, not more. Sharpening is where that shows up hardest, because the slider makes you feel like you're improving something with every notch, right up until you've gone so far past the good point that you can't find your way back by feel anymore. You have to back out and reset.
Why it happens
Sharpening works by increasing contrast right at the edges in your photo, the place where a light area meets a dark area. A little of that makes edges look defined, like a photo that's in focus. Too much and you get "halos," little rings of light and dark right along every edge, and the fine detail (skin texture, grain, wood grain, fabric weave) turns into a mess of harsh little lines. That's your photocopy look.
Old scanned photos are especially bad candidates for heavy sharpening because they already have grain or damage in them, and sharpening grabs onto all of that noise and sharpens it too. It doesn't know the difference between "important edge" and "scratch on the print."
How to do it without wrecking it
- Find the sharpen or "clarity" slider. Most apps have one, sometimes called sharpening, sometimes clarity, sometimes structure. They all do roughly the same thing.
- Move it up slowly, in small steps. Not a big drag across the screen. Little nudges.
- Zoom in on a face or a detailed part of the photo while you do it. This is the part people skip. The effect on the whole thumbnail looks subtle, but zoomed in on an eye or a piece of grain, you'll see the halo start to show up way before you'd notice it otherwise.
- The second you see a hard outline or a halo, back off one step and stop. That's your line. Not the point where it looks bad, the point right before that.
- Close the app. Come back in a few minutes with fresh eyes, same as we've talked about before. Sharpening especially fools your eyes in the moment because you're staring at the screen up close, and everything looks a little more "crisp is good" than it will later.
- If in doubt, undo back to zero and use less than your first instinct. Honestly, for most regular phone photos, you barely need any sharpening at all. It's more useful for something scanned, or something a little out of focus, or an old print. A sharp phone photo doesn't usually need help.
One real caution here, not a big one, just practical: if you're working on an old family photo like I was, save a copy before you touch it. Don't edit over the only digital copy of your grandma's picture. Duplicate it first, then wreck the duplicate as many times as you need to while you're learning. I did not do this the first time and got lucky that the original scan file was still sitting untouched somewhere else.
Before next time
Find one photo with actual texture in it, grain, wood, fabric, whatever, and try pushing the sharpening slider way too far on purpose, just so you can see what the halo looks like before it happens to you by accident. Then undo it. 😊