>
> Big? Yes but the Zuiko 35-80 is 50% bigger!
> Heavy? Yes but the Zuiko 35-80 is 64% heavier!!
> Not quite as fast as the 3.6 Zuiko? The gain of the 3.6 against 3.8 at
> the
> long end would be difficult to spot, but is numerically smaller than the
> loss of the 3.6 against 2.8 at the short end!
true.
I am not trying to knock the tamron I don't have any experience or
performance figures for it..
When I think of speed I think more of the appature quality trade off.
Which means I am only going to use F4 or 3.6 wide open if I absolutely
have to. If Gary's web site is correct the F4 is best at F11 (except at
70mm) making it very slow and the F3.6 is good at F8 and F11 giving me one
stop extra and it out performs the f4. The performance figures are for the
MC versions and I think mine may well be single coated (although I am not
sure what difference that will make)
Regards
James
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