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| Review of: SMC Pentax-A 400mm F5.6 by tonyip on Wed April 8, 2015 | Rating: 8 | View more reviews | |
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Reviews: 22
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This lens is not designed for tracking fast moving object in view of its long range of focusing distances and f/5.6 maximum aperture. It does suffer from purple fringing with strong backlighting.
Considering its relatively light weight, it is a good handheld lens for snapshot and birding.
Image quality will greatly improve when stop down to f/8 or below. When stop down to f/11, the image quality is superb and sharp.
Samples @f/11 are attached below:
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