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Old Nov 21, 2006, 8:46 PM   #41
NHL
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Idan wrote:
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what is parafocal zoom ? :?
FYI - http://photo.net/bboard/q-and-a-fetc...0B8nh&tag=
Parafocal zooms are the one that will maintain focus while zooming -> i.e. you can zoom in to check for accurate focus then zoom out to recompose

With varifocal zooms you need to set your camera for two buttons operations:
1. One to lock the exposure like you hint @ in your previous post
2. One to lock focus after zooming out
... otherwise the focus will change as the lens is zoomed back out
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Old Nov 22, 2006, 9:35 AM   #42
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is the 17-40mm parafocal zoom ??
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