SIGMA Lens experiences

Anna
Posted 13/01/2006 - 19:26 Link
Hi All, I am looking to buy a sigma 18-50mm f/2.8 EX DC lens. Does anyone here have any experience with this and the ist D? I'd be very interested to know.

Many Thanks anna
George Lazarette
Posted 13/01/2006 - 20:55 Link
The Sigma has certainly had some good reviews.

But......(and I know it's a stop slower), the Pentax 16-45 gets great praise from everybody who has used it (which, sadly, doesn't include me).

Unless I really needed that stop (ISO 800 on a Pentax DSLR is pretty darn good), I personally would plump for the Pentax.

It's somewhat lighter, too.

G
Keywords: Charming, polite, and generally agreeable.
MattMatic
Posted 13/01/2006 - 21:31 Link
Would I trade my Pentax 16-45 for something else?
No.

Resolution is astonishing, flare control unbeatable. An extremely useful and usable lens. Especially good for landscapes with some ND grad filters. I think all of my half decent landscapes were shot with this lens. (Just remember the "Riley Rule"!)

Not that I've got anything wrong with the Sigma EX range. They're well made lenses, and you can get excellent results. However, from what I've read, if you get one, check it out thoroughly first and return it if you're not happy (there seems to be a great variation in quality, even in the EXs).

Compatibility is the other issue. Sigmas often don't work correctly on newer (or older) camera bodies. Since they reportedly reverse engineer the body-to-lens protocol (rather than paying royalties) you can get issues regarding back-focusing and the like (i.e. focus on the wrong point).

Best to get a trial period
(Or a Pentax )

Matt
Arthur Dent
Posted 15/01/2006 - 01:19 Link
I got the 16-45 when I got the D because of the crop factor. Amazingly, it's one incredably good lens! Based on that exerience, I got the 12-24, and haven't been disappointed. My old M 20mm lives with the film cameras, and the two digital wides are truly superb.


BTW, I took a shot directly into the sun with the 12-24 and found absolutely NO flare. None. Nada. Zip. Zilch.

Impressive. I'd stick with Pentax glass if at all possable.
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