Reviews and Problems with Pentax DA 40mm f/2.8 Limited
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Pentax DA 40mm and 70mm Limited lens review, tested with Pentax K10D
1 April 2007
Summary: There’s no denying the Pentax DA 40mm and 70mm Limited lenses are pretty special. Their incredibly compact design is pretty much unique to Pentax and unlike anything offered by other DSLR manufacturers.
The DA 40mm f2.8 Limited is particularly impressive in this regard, measuring just 15mm thick. Indeed when viewed from the side you really have to give it a double-take and verify the photographer isn’t trying to take a shot using a hefty body cap.
Pros: Extremely thin lens – only 15mm thick, Quality construction, Aluminium lens hood and cap supplied, Unique standard lens option, Very thin lens – only 26mm thick, Fast f2.4 aperture, Quality construction, Aluminium lens hood and cap supplied
Cons: Hardly anything to hold onto, Slow to unscrew lens cap, Some softness on our sample, Audible auto-focusing with K10D, Coloured fringing seen across frame, Not much to grip onto, Audible auto-focusing with K10D, Lens cap only fits over lens hood
Excerpt: This compact 40mm pancake lens is part of the Pentax Limited range, which signifies that it is one of their top-end optics. It has a bright maximum aperture of f/2.8, costs around £380 and only protrudes from the lens mount by 15mm. On a Pentax DSLR this lens provides an angle of view equivalent to a 60mm lens used on a 35mm camera.
Pros: Excellent sharpness from maximum aperture, Thin and lightweight, Good build quality and handling, Fast focusing
Cons: Not as sharp as the newer XS lens towards the edges of the frame at maximum aperture