>I propose to buy a prime 24mm lens for my manual Pentax camera. In
>photodo.com, several lenses are rated as follows:
>
>FA 24mm f/2 AL (IF) (grade 3.7)
>A 24-50mm f/4 (grade 2.7)
>F 24-50mm f/4 (grade 2.5)
>Sigma MF/AF 24mm f/2.8 (grade 4)
>
>Do you have experience in using these lenses? Do you agree the above
>results? Any other recommended lens?
I have found the Sigma 24/2.8 (PKA) was a very good lens. It seems to be
sharper (not necessaily mean higher resolution) and higher contrast than the
FA*24/2. However, it has flare problem (the hood did not help), rather poor
mechanics (manual focus version) and 1 stop slower, I "feel" it is a better
lens than the FA*, optically.
regards,
Alan Chan
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