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03-19-2008, 09:10 PM   #16
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Whilst on 50mm lenses:-

What is the difference (in terms of image quality and focussing speed/acccuracy) between -
[a] F-50mm/1.4 & FA-50mm /f1.4?
[b] F50/2.8 macro & FA50/2.8 macro?

03-20-2008, 02:53 AM   #17
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Sigma really can't make up their mind - first DC/DG - plus the 50/2.8 is a "standard" lens, whereas the 50/1.4 is a "tele" lens - huh?
03-20-2008, 04:00 AM   #18
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Check out Sean Carpents excellent series

QuoteOriginally posted by Khukri Quote
Whilst on 50mm lenses:-

What is the difference (in terms of image quality and focussing speed/acccuracy) between -
[a] F-50mm/1.4 & FA-50mm /f1.4?
[b] F50/2.8 macro & FA50/2.8 macro?
Sean Carpents did a wonderful exhaustive comparison of all the "50's". It ran to almost a dozen installments. The first can be found here:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/8318-lens-test...-any-good.html

NaCl(an excellent and informative piece of work)H2O
03-20-2008, 09:43 PM   #19
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Thank you, NaCl!

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