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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Yashinon DS 50mm f1.9
The Yashinon DS 50mm f1.9 is an excellent overall performer from f2.8 up. Contrast is noticeably low from f1.9 to f4 but it is excellent at f8. Bokeh is reasonably smooth and color shifting in out of focus areas is minimal. Color rendition is slightly cool. Shadow detail is excellent due to the soft contrast below f8. The DS line was a compromise between the DX line, which had great bokeh but not great sharpness and the DS-M line, which had rougher bokeh but excellent sharpness and contrast. If your shooting jpegs, turn up your contrast a tad and shoot f2.8 or higher. F1.9 is just too soft.


