Reviews and Problems with Pentax smc DA 15mm f/4 ED AL Limited
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Value for money 8
Overall quality 7
Build quality 9
Pentax SMC-DA 15mm f/4 AL ED Limited - Review / Test Report
29 October 2009
Conclusion: The SMC-DA 15mm f/4 AL ED Limited is a another desirable pancake lens by Pentax. The lens is capable of producing very sharp and contrasty images at medium aperture settings. At large apertures the border quality is somewhat softer so it may not be the first choice for available light photography (handheld) ... assuming that you can find a better one. The vignetting is hefty at f/4 so it's advisable to stop down here anyway to get rid of the problem as well.