Quote:
Originally Posted by strongmanmike
Lovely crisp looking image Colin 
Mike |
Thanks Mike, trying to get something to rival your FSQ but it isn’t quite there!
Quote:
Originally Posted by gregbradley
That's a great image Colin. That Zeiss lens is a legend. Did you find it still is the king when you did your research compared to the Sigma Art 135 or the Samyang 135?
Greg.
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For general real world usage I’d pick the Sigma over the Zeiss or Samyang because it has auto focus and on a chart test is sharper than either of the other two.
For astro however, the Sigma suffers from poorer CA correction than the other two. Between the Zeiss and Samyang, that’s a difficult one. The Samyang has better colour correction but the Zeiss has better distortion correction which will lead to better coma correction. The differences are slight mind you but I’d say that the Samyang/Rokinon has a slight edge optically for astro. In saying that, sample to sample variances of both may have more of an impact than their optical differences and performance.