Besides the low optical performance the screwdriver AF is really challenged with that focal length it takes ages to lock on a aproaching jogger or similar. Occasionally I use a IMHO crappy Sigma 70-300 APO macro, surely not the latest model but dirt cheap on ebay. I didn't seriously shop for a long lens yet. Have your socks nocked off, recalibrate your demands and shop accordingly. Last general advice of somebody comparably dissapointed by all of his zooms: Get a really good prime.

My old 14mm f3.5 FF&MF Sigma prime is dissapointing enough to make me drool over the new Pentax DA, that I'll surely buy sooner or later. Add a 50mm later when you need it, for which reason ever, I just wanted a wider studio killer lens for bigger small products. The shy ones will make you wish to have a Tamron 180mm anyhow. You'll be way too close to portrait a hamster and you'll intimidate the coolest insects. There's hardly a chance to place some light between a 50mm and really small stuff. If you need a macro lens for close up work get the longer one.

It causes internal reflections when stopped down entirely, so it's a compromise, especially without a focus limiter, but at ordinary apertures it performs good. I got it as 'the workhorse' so the superior mechanical quality of Pentax was a issue for me and the whole purchase a no nonsense case. SIGMA SA-mount Canon EF mount Nikon F mount Sony A-mount Pentax mount. I have the older FA 100mm f2.8 and believe it might be my best lens by far. Micro Four Thirds mount Canon EF-M mount. A few threads further down somebody claims both to be of the same quality and somebody else says Sigma wasn't available for Pentax. (2/3 times a month) so I don't want to be paying out ? for a lens that i'm Lens perform? I would only be using this lens at it's extreme on occasions Sigma have a 135-400mm that is reasonably priced. I'd like to be able replace this with a more modernĪF lens. I have been having some good results withĪn ancient Paragon 300mm. Shots as well or do they suffer at the infinity end of the focusing for the macro?įinally, I do a lot of shipping photography and a large lens is often needed to How do the Sigma's compare as against the Pentax? Is 105mm a good focal forįirst time macro or would a 50mm be better? Can I use macro lenses for normal Sort of quality is the Sigma compared to the Pentax?Īlso i'm looking at getting into macro and have seen lenses at 105mm. My local store has recommended the Sigma 10-20mm for use with this kit. I am looking to adding a wide angle lens to camera kit. I am currently using a Samsung GX-1L with a pair of the kit lenses (18-55 &ĥ0-200).

Sigma frame lenses pentax