Samyang/Rokinon 14mm F2.8 BAD COPY - Investigating a Decentered Lens for Astrophotography скачать в хорошем качестве

Samyang/Rokinon 14mm F2.8 BAD COPY - Investigating a Decentered Lens for Astrophotography

A decentered lens element results in poor sharpness and possibly smeared corners on wide angle lenses. I didn't know mine was decentered, but suspected something was up as I was quite unhappy with the image quality coming from it on my Canon 6D for astrophotography. I explain, demonstrate and investigate the decentered defect on some Samyang/Rokinon lenses. I compare an older gen 1 copy I got off eBay for a 'deal' to an open box Rokinon Series II version to see what's new and if the new copy I got has the same defect. I didn't get around to testing in a truly dark site, as the radar tower I went too had 3 very bright, daylight, exterior lights on that made it pointless to try and shoot astro there. I may make a follow up video or just cover it in an upcoming vlog on my next astro adventure.