Originally posted by pingflood Well, coming from somebody who's actually owned one I'd beg to differ. It's an excellent lens (assuming you get a good copy, and that's a QC issue rather than a design one). It's wicked sharp wide open and while the corners aren't tack sharp neither will they be in focus due to the very very shallow depth of field. Stopped down for normal picture taking it's just fine everywhere. In other words, it's "deficiencies" are such that they'd really only show up in res tests. If shooting newspapers or doing copy work wide open is your thing, sure, it probably isn't for you. For everyday use it makes for a wonderful "normal" on crop sensor cameras however.
Around $1200. Not cheap, but the Pentax 31/1.8 is $800 and 2/3 stop slower.
Anything in particular wrong with the Nikon 35/2? Granted, the cheaper D40/D40x/D60 bodies do not autofocus it, but any serious hobbyist would most likely pick up a used D50/D70/D100 instead.
Well, I'm sure the Nikon is nice enough, but then again, we can have the Pentax 35/2, as well... The person I was responding to was talking specifically about faster stuff like 1.4s.
Having looked into the Sigma 30 1.4, it seemed a *lot* of people ended up with crappy ones: if yours is good, and I suppose it's nice to know it's *possible* to make one well, (though apparently none too easy, which is kind of the point, originally.) I'm neither a pixel-peeper, nor unaware of the narrow DOF and curvature, being a fast-lens fiend myself, but I was talking about really obvious and unacceptable softness *stopped down* ....which would be kind of unacceptable performance for an all around normal lens, anyway.
(For actual very low-light use, I could make use of that, though I'm kind of looking for a *screen* that can seem to tell the difference between lenses that fast, anyway: I try to *shoot* off the wide stop wherever possible, but I need as much speed as I can get to *see* at least.) but I'm considering a Sigma 28 1.8 for that spot, despite the size. (So happens I love that 28mm FOV on crop, and being still pretty analog, actually working as a wide on film is nice.
My current idea of where I might go for primes to start is maybe that 28 and an FA 43, and of course my favored short tele. )
Anyway, I digress, but come to dropping what's-for-me-an-awful-lot on a lens, I'd quite possibly be saving for the DA* 55, and if I were to spend that kind of money on a 30, I'd want it to do better than the Sigma seems to offer (Consistently, at least.) Wouldn't sneeze at one of those Sigmas, especially right now, while I'm feeling my thinness of digital kit, but it's a lot to pay for quirky.
Maybe they're hard to make. (affordably, at least) Dunno. Just a speculation.