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Originally Posted by avandonk
but generally the smaller the F number the better the quality,ie F2.8 to F1.8, F1.4, F1.2, under 200mm.Above 200mm don't settle for anything less than F4. and at and above 600mm F5.6.
Bert
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G'day Bert,
Can you expand on this point. Why is it better to go for above F4 for 200mm and up? Wouldn't it be better to go for lower F, ie. F2.8 (if you can afford it, that is).?
Andrew