Additional information:
The PentaxSMC DA 60-250 mm f/4 ED (IF) SDM is a telephoto zoom lens, providing high optical performance thanks to correct glass elements matching. The ED glass elements eliminate chromatic aberrations and level image brightness on the frame edges. High coefficient of transparency (99.8%) of each lens is achieved by using the SMC technology.
F/4 lens speed is constant throughout the entire range of focal lengths, thereby exposure settings do not change while zooming.
The SP (Special Protect) protective coating protects the front lens against moisture, lens, dust and dirt, which is very useful for travelling.
The lens is equipped with SDM (Supersonic Direct-drive Motor), providing accurate, smooth, silent and quick autofocusing.
lens.
The Pentax SMC DA 60-250 mm f/ 4 ED (IF) SDM pros:
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High quality build;
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Silent and quick autofocusing due to SDM;
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Good optical performance;
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Universal tilting system for the K10D + 60-250mm (convenient when attached to a tripod).
The Pentax SMC DA 60-250 mm f/ 4 ED (IF) SDM cons:
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Slight vignetting;
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Weight and dimensions;
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Backup range of 60-135 between the 50-135mm and the 60-250mm lenses.
Summary:
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Pentax continues its DA* SDM line of high quality lenses;
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Ergonomics and operability;
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Most important feature: excellent image quality.
Mean price: $ 1730- 2100
Links to online resources:
Posted by: KleoY Date of publication: 26.12.2010
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