Observations and real world pics taken with vintage lenses on a Canon T2i body. I prefer to take pics of mundane subjects when testing a lens for strengths and weaknesses. I believe it gives a more accurate 'picture' of the lens' capabilities. If you need resolution tests, use the sites listed on the links page.
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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