Has 6-10 years of SLR/camera experience.
Sharp, Contrast, IQ, nice warm colors
a little heavy compared to standard NEX lenses
A while ago I bought a Tokina 24mm f2.8 FD mount, but I was not happy with it: bad contrast, bright spots smeared out, lack of sharpness, cold colors.
I recently bought the FDn 24mm and the difference is huge compared to the Tokina, in a positive way.
I use it with my NEX 5N so it's actually a 36mm lens. The color, warmth and contrast is comparable with my Canon FDn 28mm and 35mm lenses, rather nice.
It's a little heavy compared to the standard NEX lenses, but not too heavy.
Build quality is very good as most older lenses.