I have heard these two lenses are the same. Are they just made by the same company (Samyang) or are the physically the exact same lens? If not, what differences are there, physically and optically? Also why is the Opteka $150 while the Rokinon is $240?


1 Answer 1


The Opteka 6.5mm, Vivitar 7mm, Samyang/Rokinon/Bower/Pro-Optic/Phoenix/Walimex 8mm fisheye lens for dSLRs are all the same lens optically, and are all made by Samyang in Korea. The external differences are going to be in the casing and branding and (obviously) the flange focal distance for the specific mount. And between different mount versions, the direction the rings rotate and aperture control from the camera (Canon versions don't allow it; I believe Nikon versions do if you lock the lens to f/22).

The difference in price, I would assume, basically come down to different retailers and distribution chains.

  • \$\begingroup\$ So both will have the same effective focal length and distortion when used on the same camera? \$\endgroup\$ Jul 22, 2015 at 17:11
  • 1
    \$\begingroup\$ Yes. They should be optically identical. Why they're designated with different focal lengths is anyone's guess. \$\endgroup\$
    – inkista
    Jul 22, 2015 at 18:59
  • \$\begingroup\$ Thanks very much. I think I'll go with the Opteka since it's a lot cheaper. \$\endgroup\$ Jul 22, 2015 at 19:13

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.