Ok, so it's not just Canon then. I realise that the onus is upon the 3rd party but it's still a pain in the a**e to find out that your great lens no-longer works on your latest digital body.
A good example is that i'd like to buy the 170-500mm from Sigma. Being a cheapskate, 2nd hand looks good but which of these lenses will work on my 10D. All the ones I can find are too far to travel and I don't want to risk mail-order without being sure the lens will work.
Sigma are giving mixed messages about re-chipping at the moment so that's not entirely certain and I can't think of a Canon lens that fits that niche.
Rob.
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