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

At 04:36 PM 10/29/2004, Gene Johnson wrote:


>1600mm?  You sure about that Jim?  I was thinking more like 400.  He used a
>100mm on his 35mm camera


The 4x5 frame is roughly 16x the 35mm frame. This is all about image 
magnification. 16x 100 = 1600.

But I could be wrong and would gladly accept another proof.

Jim 

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