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Forum: Pentax SLR Lens Discussion
11-24-2008, 04:13 PM
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An area where primes usually outshine zooms is in aberration control and resistance to flare. The optical performance for zooms aren't constant throughout the range of focal lengths, with varying amounts of barrel to pincushion distortion. Even if these are manageable and sharpness is good, there is usually some light falloff (vignetting) at maximum aperture. Flare is another issue and from experience the FA 50mm is much better than the DA* 50-135mm, especially when shooting night scenes with point light sources.
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