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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Nikon 100mm f2.8 Series E
Filter Size:
Lens mount:
Aperture Range:
Close Focus:
Macro Ratio
Year Introduced:
Tested with...
52mm
Nikon Ai-S
f2.8-f22
1 meter
n/a
1979
Eos 6D - Full Frame

Is this a good lens? Yes. Does it have faults? Yes.
These shots were taken with my Eos 6D. This lens is compact and lightweight. It does have a significant amount of plastic in it and it would be a much better lens if the focus helicoid wasn't plastic. That is a problem. Servicing the helicoid is difficult. Focus dampening is not good at all. So, why shoot with it?
It's sharp. It's sharp wide open. Bokeh transitions are very smooth. Color is accurate and a little bit undersaturated. Contrast is slightly soft. Abberations are almost non-existent. Corner sharpness is very good. It is designed to be a portrait lens and it does the job very well.

f4

f4

f5.6 - 100% crop

f2.8

f4

f5.6 - 100% corner crop

simple b/w conversion

f 2.8 - vignetting

f2.8 -100% crop

100% crop

f5.6