Reviews and Problems with Pentax SMC-FA* 300mm f/4.5 ED (IF)
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Overall quality 8
Build quality 8
Pentax SMC-FA* 300mm f/4.5 ED [IF] - Review / Lab Test Report
31 October 2008
Conclusion: The Pentax SMC FA* 300mm f/4.5 ED [IF] showed a very solid performance in all tested characteristics. The resolution is generally very good to excellent. Distortions, vignetting as well as CAs are very low and not field relevant. The build quality is excellent and the AF speed is very high. Interestingly Pentax decided to stick to an unusually slow max. aperture of f/4.5 vs the f/4 mainstream.