Mike Tuomey Offline Image Upload: On
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p.1 #5 · MarkIII or 200mm f/2.0 | |
If the ISO benefit of the upgrade in bodies (MK IIn to Mk III) is 1 stop and the benefit of the upgrade in lenses (200/2.8 to 200/2) is 1 stop, then there has to be something else to determine the choice.
One stop in speed at 280mm using the 1.4x TC with the 200/2 versus the 200/2.8 would be one benefit, especially if you shoot at 280 often in lower light.
It's likely the 200/2 will offer incrementally better IQ at that focal length than your 200/2.8 or 70-200/2.8, but certainly not proportionate to the potential cost of the 200/2. Does IQ at the extreme matter a lot to you? If the 200/2.0 prices at US$4000, and you sell your 200/2.8 and 70-200/2.8, the net cost to you would only be about US$2000.
If you wait awhile maybe used Mk III bodies will drop in price and you'll be able to do both the lens and the body at some point, assuming you sell your 200 prime and zoom?
Edited on Oct 29, 2007 at 04:34 PM
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