[pure-silver] Re: Depth of Field (35mm vs. 4x5 or 8x10)

At 03:37 AM 10/30/2004, DarkroomMagic wrote:


>I'm with Gene on this one. The focal length ratio is equal to the frame
>diagonal ratio, which is equal to the magnification ratio.
>
>Consequently, a 400mm lens on a 4x5 camera is similar to a 100mm with a 35mm
>format camera.



I'll accept that and thank you both very much.

Jim 

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