Between the time another discussion thread referred me to this one, and I started to look for my 28mm and a polarizer to try on it, it went from being partly sunny to a cloud bank covering all with only occasional openings. I had to pocket the filter immediately upon going outside and seeing how gray it had become, and it actually sleeted on me between some shots...so sorry no bright primary colors.
These are with my Auto Sears MC 28mm f/2.8 lens, K-mount version (no A setting). This Japan made lens is NOT a Korean-made Sears 28mm lens with the Macro function of the type that Sagitta, Dewman, and KOog were raving about. It may be the same lens ChristianRock posted samples from. There were both Korean and Japanese-made lenses sold under the Sears label. Some lenses famous among Sears lens fans and having a macro function--for example versions of 28mm, 135, 80-200mm focal lengths--were made in Korea.