jsecordphoto
Been spending a lot of time on here!
- Joined
- Oct 26, 2013
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- new hampshire
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The Roki 24 is an amazing Astro lens, given you get a sharp copy. As people have mentioned, their quality control is garbage and lots of copies have decentering issues, but with a good copy it's one of the most popular Astro lenses, and best performing. Most people stop down to f2, as the vignetting and sharpness is a bit better than at 1.4. And for those saying try the 16-35 at 30" and f4, I think you'll find star trailing at those exposure times if you zoom in to 100% and look. That old rule of 500 might've been accurate with lower pixel density sensors, but I know with my d750 (also 24mp), at 15mm 20 seconds is pushing it. It's even worse with bodies like the d810 or a7r2. At 30 seconds viewing at 100%, the trailing is very noticeable. If you're just sharing online, no big deal, but with prints you'll definitely see trailing. Honestly if you just googled rokinon 24mm astro, you would've found tons of reviews and articles about how great is is.