I believe each lens should be considered with its intended use in mind. A portrait photographer has no need for an ultra-wide lens. So what is the intended purpose of the DA 21? For me, its purpose is to work as a portable, handheld task force with the F50 f1,7.

The Pentax "Limited" lens line is known for its image quality, solid construction, and small size and weight. The first three lenses in this line were the FA 31/1.8, FA 43/1.9, and FA 77/1.8.

One of Pentax's exclusive Limited series lenses, the lightweight and compact 21mm f/3.2 ($470, street) features all the traits that have made a name for the Limited series: solid all-metal materials, extremely high manufacturing standards, engraved barrel markings, and uncompromising optics.

Pentax smc DA 21mm f/3.2 AL Limited is one of a series of Pentax pancake lenses the company introduced for its digital SLR cameras to fill in the gap that was left after the previous generation of K and M series lenses was discontinued.

Pentax have announced this new, compact prime lens for use on their digital SLR cameras. Slim and lightweight, we take a look at this aluminium-housed optic.

Compact in the extreme; Good resolution across the frame; Good build quality gives confidence in longevity

Some barrel distortion; Some CA when stopped well down; Price

The field of view of the lens, in 35mm equivalent, is that of a 32mm lens, near the classical 35mm focal length often associated with street photography. It can thus be regarded as an evolution of the FA 31mm F1.8 AL Limited.

As we've already happened to mention before, Pentax is the only company on the market which enlarges very consistently its line-up of fixed-focal lenses designed for small sensors.

significant distortion for such an angle of view; noticeable coma; very high astigmatism; image quality on the edge of the frame near the maximum relative aperture could have been better; a bit too high vignetting

Pentax have announced this new, compact prime lens for use on their digital SLR cameras. Slim and lightweight, we take a look at this aluminium-housed optic.

Compact in the extreme; Good resolution across the frame; Good build quality gives confidence in longevity

Some barrel distortion; Some CA when stopped well down; Price

This is one of the lenses that has made a lot of pros keep their Pentax gear, as it is superbly made, sharp as a needle, and very small. Can't fault it in any way!

A lovely little lens; superb in every way

Could be cheaper; I guess :-)