- built quality is superb
- excellent sharpness
- lovely Bokeh
- size and weight
- front screw size (saves a lot money on filters)
- price

For weaknesses I really have to think for a while:
- maybe a bit slower and noisier AF compared to SDM lenses
- people tend to laugh when they see it mounted on the camera....:o) (and so they do with the 40mm pancake lens)

I use this lens for nature and outdoor photography, as well as for some portraits. And I love it!
It is so well-built and its sharpness is wonderfull. Also bokeh is excellent, maybe better at 2.8 than the fastest 2.4, but this is matter of personal taste. I enjoy a lot its size and weight - it is so easy to carry this lens anywhere I go, even for a whole day trip. Also do not forget about the advantage of small filter size you need (49mm) - filters cost just few bucks (compared to 77mm on my 16-50 zoom).

Overall this is a great lens I can recommend to anyone looking for the top image quality.

Customer Service

No experience

Similar Products Used:

Pentax 70mm
Pentax 16-50mm