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05-08-2010, 02:19 PM - 1 Like   #16
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QuoteOriginally posted by KxBlaze Quote
I would say that generally speaking primes have better IQ than zooms. Of course there are exceptions. The Pentax 17-70 is a very sharp lens but not as sharp as the DA 40 limited, actually any pentax DA limited is probably sharper than any zoom out there but definately not all primes are sharper than every zoom. That is going to far.
Remember that IQ is not just about sharpness. A zoom lens often has more distortion, more CA, lousier bokeh, less speed, less flare resistance etc.

05-08-2010, 03:04 PM   #17
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QuoteOriginally posted by EricT Quote
Remember that IQ is not just about sharpness. A zoom lens often has more distortion, more CA, lousier bokeh, less speed, less flare resistance etc.
Correct. Replace the word "sharp" with IQ in my quote and thats what I meant.

A rule of thumb that I try to photograph by: Use a prime lens WHENEVER possible and whenever NOT possible use a very good zoom.
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