When digital cameras with sensors smaller than full frame appeared on the market they forced some changes in the offer of lenses as well. Plenty of instruments, designed for small detectors, have been launched ever since but, what is interesting, the majority of them were mainly zooms.

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  Weak image quality on the edge of the frame,, Distinct coma.

The SMC-DA 15mm f/4 AL ED Limited is a another desirable pancake lens by Pentax. The lens is capable of producing very sharp and contrasty images at medium aperture settings. At large apertures the border quality is somewhat softer so it may not be the first choice for available light photography...

I have been a Pentax equipment user exclusively for almost 50 years now. I always enjoyed their cameras' small size and their wonderful assortment of prime lenses. I currently own two DSLR's: an old IstDs which my wife uses with a DA 40mm f2.8 Ltd and a K5 which I use with the ubiquitous DA 18-55 mm...

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  Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction

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  NONE

Lens seems immune to flare when shooting directly into or near the sun. Macro closeups are excellent, even though this is not a true macro. Bokeh is very pleasing. Auto focus is fast and quiet.

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  Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Strong Construction

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  Poor in Low Light

One of my favorite all time lenses! It's gets a little soft at the edges but sharpness closer to the center is wonderful. Colors are just super vibrant. Construction is top notch, just wish it was WR and an f2.8 (-1 star for that) since the most use you will get out of this is outdoors.