Originally posted by bakamera ...I would like a wider lens for some more all purpose use (especially group photos around, say, a dinner table) but would also want something that would serve me well enough in low light. I am also on a tight budget, hence the M 50/1.7 was perfect for me. I've read the posts above and seen a few lenses, but are there are recommendations on a wider lens with decent low light performance and a similar price to the M 50/1.7?
The various 28mm f2.8 lenses don't seem to be fast enough at first, but remember you can use a slower shutter speed at 28mm. You can maybe find a Pentax-M 28mm f2.8 for around the same $50-60 as an M50/1.7. I like the A version too but it's priced more like the A50/1.7.
Now that everyone knows the secret, Vivitars with KA mount aren't going for $10 and a free Pentax MG any more. The ones with less popular makers like Cosina and Bauer are not too bad, though, and the A setting makes using the popup flash way easier.
If you aren't convinced that f2.8 is fast enough, I was kind of surprised to see a Vivitar/Kiron 28mm f2 lens sell in the marketplace for $80. I have one of these and it's great. Make sure the aperture blades don't have oil on them, but $30 for a whole stop faster is a bargain.