Gid
Well-known
sitemistic said:I'm no expert. But the experts I've read seem to pretty much agree that the tools in Photoshop, like unsharp mask, etc., pretty much erase the differences between lenses on digital cameras. With digital, sharpness is much more influenced by processing than the lens itself. Now, I'm not talking about the difference between a cheap kit lens and a Summicron. But with good lenses of different brands, digital post-processing is the great equalizer. With ACR, for example, you can correct all kinds of lens defects very precisely.
Film is a different matter. If everyone is using Tri-X, for example, a lens' specific characteristic is going to show through from example to example. This just isn't the case with digital. If my lens lacks a little sharpness, USM in Amount: 20%, Radius 50, Threshold 0, will make it look spectacularly sharp. It's almost magic! 🙂
I read extensively, but, haven't come across any claims that photoshop is a substitute for good quality lenses or good quality sensors. Adding a small ampount of micro contrast (which is what your USM recipe is doing) will add the appearence of sharpness to any digital camera and lens combination. However, a sharper lens and better digital implementation will always be better. I make no claims regarding which camera or lens or recording medium is better. Unless you want to produce billboard size prints that will be viewed from 2 inches with a loupe, just about any camera, lens, medium could produce A4 or even A3 prints that would look fine from normal viewing distance.
However, if we all accepted that, we wouldn't need to keep buying the latest gear and we wouldn't have so many (interesting) arguments 😉