Thread: Queston??
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Old 10-04-06, 22:29
Frank Peeters Frank Peeters is offline  
 
Join Date: Apr 2006
Location: S/E Mich. near Lake St Clair
Posts: 26
Default Thanks Duncan
The Sigma loses auto focus capability when the converter is attached. I have realized that exposure time (shutter speed) will need to be slow when using the converter, in order to allow enough light penetration into the camera. I just wasn't sure if I should match the camera and the lens Fstop. To make an anology "the right size screw & thread to the right size nut". As you can tell I'm really green at photograpy.

Thanks for your patience and help, one and all!

Frank
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