EOS Re: Why doesn't my 1.4 50mm or my 2.8 70-200L....

[Henry Posner/B&H Photo-Video]

At 10:35 AM 11/16/2000, you wrote:
>No, what I am confused about is if DOF preview shuts down the aperture
>to "show" the DOF, that should only -increase- DOF, right?  So why
>don't you see a very shallow DOF all the other times when the lens is
>wide open.

But you do. Set your tele lens to wide open and focus on an item very 
nearby with the background some distance away. Put your kid in your 
driveway and focus on her with the distant neighbor's house behind. The 
house will be a blur.

--
regards,
Henry Posner
Director of Sales and Training
B&H Photo-Video, and Pro-Audio Inc.
http://www.bhphotovideo.com

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