OK, thank you. What about Sigma EX 2.8/70-200? Is it comparable to Tokina 2.8/80-200? Tokina is hardly to find in Russia now... :-(
I think the major concern with the Sigma is that it might not work on future Pentax bodies. It has been known that SIgma have been reverse-engineering people's technology and causing capability problem. If Pal was right, there would be some "exciting" lenses coming from Pentax. You might want to wait for awhile and see.
regards, Alan Chan
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