Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Good, but has limitations opened beyond f2.8
Review: I don't to duplicate everything that dpreview did for this lens. They have an excellent review with detailed analysis of this lens.http://www.dpreview.com/lensreviews/pentax_50_1p4_p15/Some quoted highlights:Pros:* Excellent image quality when stopped down to F2 and smaller* Very low lateral chromatic aberration* Almost no rectilinear distortionCons:* Very soft wide open* Extremely 'busy' rendition of out-of-focus backgrounds at wider apertures (larger than F2.8)* Bokeh chromatic aberration, most visible at wide apertures (F1.4-F2.8)Short is that this is a very good lens, but if you want the best pictures you will want to not use it higher then f2.8. The sigma 50mm F1.4 HSM for pentax would give you better wide aperature performance, but you will pay for that as well.
