just noticed a used mint sigma 17-70 2.8-4 os hsm at a great price £199 or the 24-70 2.8 (non hsm version approx £100 more), its one or the other (made a decision)It's a great lens on a FF, but I personally wouldn't be happy with f4 on a crop. But that's personal choice - I can't cope with a minimum of 24mm on crop either, but my wife is happier with 24-70 than 17-55:shrug:.
your thoughts appreciated
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