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Old Oct 12, 2010, 1:10 PM   #11
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i agree with jelow - if its well supported you can get pretty sharp images out of this lens - even at wide apertures (well as wide as it goes at 500mm anyway)

as to the variability of the lens cant really speak to that except to say of the sigma lens i have all three are built like tanks and all performed to or above my expectations - specially since the reason i got them was the lower price point for the msot part (obviouslyy the 150-500mm sigma was really my only option in this focal length for pentax but had i been shooting nikon or canon i would not have coughed up for their versions over this)

as for comparing it to the pentax 12-24mm hmmm hard to say since i really dont shoot similar things with them - less CA with the sigma can say that much =) all i can say is they are both good lenses - will take you some time to get the hang of it though my early attempts were not great but they are slowly improving each time i use it
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Old Oct 12, 2010, 7:33 PM   #12
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Originally Posted by John.Pattullo View Post
i agree with jelow - if its well supported you can get pretty sharp images out of this lens - even at wide apertures (well as wide as it goes at 500mm anyway)Yes, that makes sense. I'm not sure but I think the 500mm end of the lens would be a 35 mm equivalent of around 700-750...I'm guessing, though ?
I've seen a few 150-500 Bigmas and of course with 700 mm or so...probably a good idea to have the shutter speed set to at least 1/1000th...and use a tripod, or at least a monopod.

as to the variability of the lens cant really speak to that except to say of the sigma lens i have all three are built like tanks and all performed to or above my expectations - specially since the reason i got them was the lower price point for the msot part (obviouslyy the 150-500mm sigma was really my only option in this focal length for pentax but had i been shooting nikon or canon i would not have coughed up for their versions over this)thanks....I was wondering how consistent build quality is with Sigma....your experience with three... is a good barometer...

as for comparing it to the pentax 12-24mm hmmm hard to say since i really dont shoot similar things with them - less CA with the sigma can say that much =) all i can say is they are both good lenses - will take you some time to get the hang of it though my early attempts were not great but they are slowly improving each time i use it
like anything worth doing I suppose, in order to become good at a skill one needs to work at it.....thank you for the info, John.

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