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Old Apr 8, 2005, 1:58 AM   #1
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Is this true? The Canon 20D only goes down to f/6.3 or so, from what I have heard.
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Old Apr 8, 2005, 1:58 PM   #2
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The Canon's AF is only spec for f/5.6 max for their consumer cameras, but f/6.3 is only a 1/3 stop down - so lens like the Bigma 50-500mm works just fine down to f/6.3. You also have to set the camera to increment in 1/3 stop - @ the default 1/2-stop it won't even show it...

@ f/8 some Minolta can focus with their mirror lens - The only one in the entire world
http://www.popphoto.com/article.asp?...ber=3&preview=
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Old Apr 11, 2005, 10:44 PM   #3
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NHL wrote:
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The Canon's AF is only spec for f/5.6 max for their consumer cameras, but f/6.3 is only a 1/3 stop down - so lens like the Bigma 50-500mm works just fine down to f/6.3. You also have to set the camera to increment in 1/3 stop - @ the default 1/2-stop it won't even show it...

@ f/8 some Minolta can focus with their mirror lens - The only one in the entire world
http://www.popphoto.com/article.asp?...ber=3&preview=
Why does the 7D focus at f/8, when you have to go to a canon 1D to get that feature?
That just seems like something that Canon could have thought of for the 20D:lol:
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