Archived posting to the Leica Users Group, 2002/04/08

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Subject: Re: [Leica] RE: digital grain
From: John Brownlow <john@johnbrownlow.com>
Date: Mon, 8 Apr 2002 20:48:36 -0400
References: <5.1.0.14.2.20020408162443.06542410@pop.alink.net>

On 4/8/02 jim@brick.org wrote:

>The way you do it in film, using an enlarger, is rap your enlarger head 
>with your hand during your exposure. The enlarger must shake for roughly 
>10% to 20% of the total exposure. This is called "shaking the grain out."
>
>And as soon as you stop laughing... this is no joke!
>
>The exposure is long enough for the sharp image to register but the edge is 
>taken off of that oh so gritty grain. It's like a Softar filter without the 
>filter. The image still looks sharp but the fine detail (grain edge effect) 
>is smoothed over.

that is very easy to mimic in Photoshop

duplicate the image to a new layer. Set the opacity of the top layer to
10-20%. Now apply a Gaussian Blur to the top layer (my guess is 1-5
pixels). Experiment.

- -- 
John Brownlow

http://www.pinkheadedbug.com

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Replies: Reply from "lea" <lea@whinydogpress.com> (Re: [Leica] RE: digital grain)
In reply to: Message from Jim Brick <jim@brick.org> ([Leica] RE: digital grain)