----- Original Message -----
From: "Tom Christiansen" <[EMAIL PROTECTED]>
Sent: Tuesday, August 29, 2006 9:07 PM
Folks,
What kind of image quality should I expect to see at or near wide open
with a 70-200/2.8 IS + 1.4x TC and 70-200/2.8 IS + 2x TC?
Anybody has some real-world experience to share?
Thanks,
Tom
Tom,
IMO, wide open, 1.4x at 280mm is better than a crop. 2x at 400mm is slightly
worse than a crop from 280mm with pronounced vignetting.
2 stops down and I'd go for the TCs (both MK1s in my case) without
hesitation.
HTH
CraigZ
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