The whole question of lens sharpness...

Started Jun 12, 2013 | Discussions thread
Alphoid
Senior MemberPosts: 2,757
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Re: The whole question of lens sharpness...
In reply to Basalite, Jun 19, 2013

Basalite wrote:

No, it's impossible to increase real sharpness if it wasn't there to begin with. There is also no point in a soft focus lens when you can use software to blur a sharp lens.

This is, mathematically, not true:

  1. It's possible to increase real sharpness. This requires having a model of the way in which the lens is not sharp (not just a 'sharpness' slider). If you do the sharpening badly, you will end up with ugly relics. If you do it right, the only downside will be that noise will increase as well.
  2. Soft focus, on the other hand, is impossible to replicate in post-processing. Software treats the image as 2d. The light coming into a camera is a light field. As a result, lens soft focus effects can be different than anything postprocessing can do (whether better or worse is subjective).

Practically, of course, I agree.

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