Originally posted by Andrew_Oid Yes, you're right. The lens is another indication of Soviet engineering and technical ability. It's certainly more than an adequate performer, and considering they can be had for $15-20 (!) it's hard to find a serious fault with them. Of course, for not much more one could get a Helios 44, a slightly narrower field of view but f2, a 52mm filter thread, a closer focusing distance, and better quality of construction and optics. And then there are so many other 50s, 55s and 58s. And that's why the Industar-50-2 will probably always be pretty much a curiosity. I'm glad to have it but more to take a picture of than with. My 50 of choice is another Tessar, a CZJ 50mm f2.8 made between 1955 and 1958 with 12 blades and smoother aperture and focusing action than a Takumar, and it produces IQ in spades.
---------- Post added 06-27-17 at 07:46 AM ----------
It is a cute lil sucker.
Right now my Russian lens stable only houses a Helios 44-2 and a MIR 1-B, so next I would probably look for something in another focal length area from either of those, but I am sometimes tempted by a low price on an Industar 50-2. I have bid a (or come close to bidding) on a Zenitar 16mm about four times, only to see it zoom out of my price range, sometimes in the last seconds. I have been watching a Jupiter-9 85mm, and watched it just do that a day and a half before the bidding was to end. I got my Helios cheaper than most because it was on a Zenit body, apparently keeping it from being noticed by shoppers scanning the lenses only category of the auction site.
I really think of my Russian lenses as a subset of my little m42 stable of primes, which I am gradually filling out with lenses of differing focal length and somewhat unique character: a Sun 28mm, the MIR 37mm, my long-loved Super-Takumar 55mm, the Helios 58mm, a Sears 135mm, a Mamiya 200mm, a Sears 300mm, so far. The Helios is perhaps the most surprising, because it's sharp center with progressively OOF vignetting wide open is remarkable all by itself, but then if I stop it down to f/11, it's suddenly sharp all over -- it's like two different lenses in one! The Sun takes a bit of a learning curve, since it is very hard to have it consistently focus where I think I've focused it when wide open at f/2.5, but if I stop it down to f/4 suddenly all that that trouble goes away and it becomes a rather remarkable lens: good color, contrast, sharpness, bokeh, and quite amazing with 10mm of extenstion added. If I do get a 50mm (which right now seems so close to the 55mm and 58mm I already have when I have a big gap between 58 and 135mm, for example), I keep thinking of it being a Takumar f/1.4, but maybe....., just maybe....., it could end up being an Industar.