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Forum: Visitors' Center 03-05-2019, 12:31 AM  
Recommended Lens for K3-II Astrophotography Produced Anything But Stars
Posted By Adam
Replies: 21
Views: 2,278
Yup, Rokinon and Samyang are the same. Which is marketed where varies, but the product doesn't.
Forum: Visitors' Center 03-03-2019, 11:03 PM  
Recommended Lens for K3-II Astrophotography Produced Anything But Stars
Posted By Adam
Replies: 21
Views: 2,278
Your best bet would be to use live view magnification to verify correct focus.

Also, with a lens as wide as the 8mm fisheye, the astrotracer will likely produce blurry corners and only allow for relatively short exposures (perhaps in the 15-30 second range). A bit of trial-and-error would definitely be the way to go in ensuring that the focus is correct, and the exposure time reasonable.
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