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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Gemini 80-200mm f4.5
Filter Size:
Lens mount:
Aperture Range:
Close Focus:
Macro Ratio
Year Introduced:
Tested with...
55mm
Pentax K
f4.5-f22
n/a
n/a
n/a
Eos M3 - APS-C

The 70's and 80's were plentiful with lenses for 35mm slr's. Companies like Cosina made dozens of lenses under various brand names for dozens of dept stores, camera stores and other manufacturers. Gemini is one of those many brands.
This is a decent lens which produces good usable images from f4.5. Contrast is good. Colors are accurate. Fringing is well controlled. It is a well made lens. Focus dampening is good. Push-pull zoom action is smooth. Sharpness is good wide open.

ISO 400 - f4.5 - 200mm - 100% crop

ISO 400 - f5.6 - 200mm - 100% crop

ISO 400 - f4.5 - 200mm - 100% crop