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I was wondering if anyone has used the above lens. Thinking about purchasing one. I have a pentax 18-250mm F3.5-6.3 lens but am finding that shutter speeds are too slow when trying to shoot in low light. Any reviews opinions would be helpful.

thanks

David

I have the FA 100/2.8 Macro as its sharper a bit further down the aperture range.

its better than the Tamron 90 Macro as it renders a bit warmer.

the DFA has the advantage of quick shift and ghostless coatings though.