Comparison of New Zeiss 50mm f/1.4 Nikon Mount vs. Older Nikon Normal Lenses
When I read all the promotional material on the Carl Zeiss web site about their introduction of a new line of lenses in Nikon mount, I could hardly wait to get my hands on their upcoming lenses in the M42 Pentax Screwmount (I still shoot in M42). Well, after reading Ken Rockwell's comparisons, it appears that these Cosina-Zeiss lenses aren't really so superior after all. One look at his comparison pages on lens sharpness reveals that your choice of aperture is, by far, more important than your choice of lens! (http://www.kenrockwell.com/nikon/50-comparison/f-stops.htm) He used the 50mm f/1.4 AI as an example, and he showed images of the same object, shot at various apertures. I had always known that lens performance varied based on the selected aperture, but seeing these comparisons, rather than just reading test results expressed in Lines-Per-Millimeter, really hit home! The entire series of tests can be viewed starting at this link: http://www.kenrockwell.com/nikon/50-comparison/index.htm What I really liked about this particular series of tests is that he actually shows you the images, side by side, so you can see the differences with your own eyes, rather than just relying on his personal assessments. It was amazing to see how decades-old Nikon normal lenses equaled or beat out the new Zeiss normal lens. These tests may not represent the last word on the subject, but seeing the photos certainly knocked the wind out of Zeiss' sails, at least for me. I guess I won't be trading in my Pentax normal lenses any time soon.
Jeremy
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