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http: twit tv show know-how 142


G+_John Nooncaster
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http://twit.tv/show/know-how/142

 

Two things in regards to the camera section...

1. Film speeds -- Back in the days when I was a kid -- Film speed varied from 25 (Kodachrome) to 400

2. Although the mirror does flip up in a SLR, there is an actual focal plane shutter to control the exposure time.  It is not the mirror which controls the exposure.

http://twit.tv/show/know-how/142

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