10 out of 10 points and recommendedbuild quality, sharp, metal body, fast, smooth focus ring, bokehmanual focus, difficult to focus at the long range at f/1.4, min focus = 1m/3'
The only 'bad' thing (subjective) is that its manual only lens.reviewed November 16th, 2013
This lens was a gift - and takes great pictures on my Pentax K-30.
It can be difficult to focus wide open - especially if the subject is at the far end (7-15'm or greater) as its very little movement with a huge change in range, with little DoF.
Image is sharp across with the K-30, as its an APS-C and this lens is FF design. It works well with the Pentax focus indicator as well.
Other uses for this lens - video (manual focus recommended). The smooth focus ring is excellent for shooting video.
In general - if you're looking for a fast, inexpensive sharp portrait lens with great bokeh... this is a very good deal.