Konu: Opteka 6.5 mm. fisheye lens

Bana da aralarında az da olsa farklılıklar varmış gibi geliyordu (en azından isimlerine dayanarak odak uzaklıklarındaki birkaç mm'lik fark) ancak Photozone'a göre hepsi aynı lens:

Samyang Optics (Korea) is offering SLR lenses for many years but recently they've gained some higher visibility & popularity due to some quite exiting new products like the recently reviewed Samyang 85mm f/1.4 and the Samyang 8mm f/3.5 CS Fisheye which we'll cover in this test report. Samyang lenses are also marketed by several other companies like Vivitar (7mm f/3.5), Bower (8mm f/3.5), Opteka (6.5mm f/3.5), Walimex (8mm f/3.5) and probably a couple more.