HD Pentax-DA 20-40mm f/2.8-4 Limited DC WR Lens Review

Pentax HD Pentax-DA 20-40mm f/2.8-4 ED Limited DC WR Sample Photos

Wide-angle | 1/50 sec | f/6.3 | 20.0 mm | ISO 80 High-Res	Telephoto | 1/100 sec | f/6.3 | 40.0 mm | ISO 100 High-Res
Sharpness is very high in the centre of the frame throughout the zoom range at maximum aperture | 1/80 sec | f/4.0 | 40.0 mm | ISO 400 High-Res	Contrast is retained well when shooting into the light | 1/80 sec | f/4.0 | 40.0 mm | ISO 100 High-Res
1/100 sec | f/6.3 | 20.0 mm | ISO 80 High-Res	1/60 sec | f/11.0 | 23.0 mm | ISO 400 High-Res
1/60 sec | f/6.3 | 20.0 mm | ISO 80 High-Res	1/50 sec | f/11.0 | 20.0 mm | ISO 200 High-Res

Value For Money

Being priced at around £850, this lens is quite expensive for a standard zoom with a variable aperture, especially when you consider that for around the same price, you can pick up a Pentax 16-50mm f/2.8 DA* ED zoom lens. Not only does the 16-50mm lens have a more useful zoom range, but it has a constant f/2.8 maximum aperture and internal focusing.

Another alternative, covering a similar zoom range is Sigma's 18-35mm f/1.8 DC HSM, which sports a fast f/1.8 aperture throughout the zoom range and costs around £650. With alternatives like this available, it makes it increasingly difficult to justify the expense of this Pentax 20-40mm lens.

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