The problem with the "macro" teleconverters is the additional 1/2-1
stop of light loss, that reduces a f/2.8 lens to f/8 instead of f/5.6
- as do "normal" 2X teleconverters. I suspect this is due to the
additional extension required by the helicoid mechanism.
Even if very good, I'd stay away from a macro TC just for this
reason.
Servus, Alin
Steve wrote:
SL> I know it can be confusing, but the Vivitar 2X Macro Focusing
SL> Teleconverter MC 7 element is a very good lens. It can also be
SL> racked out for decreasing your close focus distance, which is
SL> handy.
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