Quantaray 500mm f8 Mirror
Most Quantaray lenses were made by Sigma and some were made by Tamron and Tokina. This lens performs like a Sigma Mirror lens. It is reasonably sharp if you can hold it steady. It has the typical ringed bokeh we see from mirror lenses. Contrast is surprisingly high. While it is not a Zeiss or even a Tamron in quality, it is still far better than any of the off-brands flooding the market.




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Contax Planar 50mm f1.7
Filter Size:
Lens mount:
Aperture Range:
Close Focus:
Macro Ratio
Year Introduced:
Tested with...
55mm
C/Y
f1.7-f16
.6 meters
n/a
n/a
167MT

Zeiss developed the planar design. It is the standard for all 50mm lenses produced today and for good reason. Combine a great design with great glass and great coatings and you have the Contax Planar 50mm. Essentially, this lens is as good as it gets without spending a small fortune. You may notice minor fringing when using this lens in harsh lighting on a digital body, but is easily correctable. Though not designed for close focus, the Planar will produce nice macro images with extension tubes. Shoot at f4 or higher to avoid bokeh fringing.

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Bokeh Fringing Test
Eos 6D

f1.7 - color shift

f2.8 - minor shift

f4 - clean