Originally posted by aurele i'm wondering about the 28mm f1.8 from Sigma. Would you mind gives us a little review ? I've seen mixed reviews, and i'm wondering how it perform on actual camera.
I'm still hesistating on buying it
sure - very briefly:
a bit heavy/large, but I am comfortable with it on the K-3 or K-50 (it is NOT a DA40 Limited)
color saturation is accurate
sharp and crisp - mine does not seem to suffer from any decentering that I have noticed
AF is quick in most light; it does hunt a bit when you start losing the light, but I have found that the manual focusing is much better than most modern lenses - the focusing ring has more damping than I expected and is more tactile than many of the modern Pentax DA lenses - this is not an HSM lens, so you'll have the screwdrive focusing noise, but I don't find it intrusive
bokeh is quite nice and doesn't seem harsh or distracting
my album so far:
Sigma 28mm f1.8 EX DG | Flickr
my copy is a refurb by Sigma, purchased from Adorama...