[pure-silver] Re: what is acutance?

  • From: Martin Jangowski <martin@xxxxxxxxxxxx>
  • To: pure-silver@xxxxxxxxxxxxx
  • Date: Mon, 18 May 2009 18:37:32 +0200 (CEST)

On Mon, 18 May 2009, Shannon Stoney wrote:
I am visualizing this by thinking about the photoshop unsharp mask filter. It "draws lines" around objects too. Is this the right way to visualize what accutance is?
Yep. It makes the border between black and white more pronouced. I try a little ASCII-graphics: 

normal:

     ------
_____|


with edge effects:

      ^--------
      |
-----v
The v and ^ are the more pronounced edges. I tried (in vain) to get any visible effect in 6x6, even with very thin, alkaline developers (like Beutler). 

Grüße aus Hohenlohe,

        Martin Jangowski

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