Originally posted by swanlefitte There is an m28mm on the market place for $45. A lot less than $200.
Which m 28mm? There are four m 28s: an f2 version, two f2.8 version, and a f3.5 version. I've owned the first version of the m 28/2.8 and the K 28/3.5. The m 28/2.8 is a nice enough lens as far as it goes, it's as sharp as the K 28/3.5, but it's not as contrasty and the rendering is rather generic. Images from the K 28/3.5 just look better and there's no getting around it.
If you're going for an inexpensive M series 28mm the one to get is the f3.5 version. While it does quite match the K 28/3.5, it's a fair bit contrastier than the M 28/2.8 and produces better looking images.