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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Quantaray 28-80mm f3.5-5.6
Filter Size:
Lens mount:
Aperture Range:
Close Focus:
Macro Ratio
Year Introduced:
Tested with...
55mm
Various
f3.5-f22
.5 meters
n/a
n/a
Eos T2i

This particular lens was made by Sigma for Ritz Camera in the 90's. It was a basic kit lens, but as you can see, it performs well. My copy has a Nikon F 'D' mount. It is a chore to focus on my T2i because these lenses aren't dampened for manual focus.
It is reasonably sharp at 28mm wide open. It is soft at 80mm wide open but tightens up quickly at f8.
Color rendition is accurate, but color saturation is a bit low.
Fringing is barely noticeable.
This lens frequently sells for less than $20. Honestly, I don't know why. It's a good lens. It performs better than name brand kit lenses of the same era and is made better, too.

ISO 800 - 80mm - f5.6 - 50% crop

ISO 800 - 80mm - f5.6- 100% crop
barely noticeable fringe

ISO 400 - 28mm - f4

ISO 400 - 80mm - f5.6

ISO 400 - 50mm - f4

ISO 800 - 80mm f5.6 & 35mm f4- 100% crops