Rokinon Reflex 300mm f/6.3 ED UMC CS APS-C

The Rokinon 300mm f/6.3 is a tiny, cheap mirror lens with sharp optics when you nail focus, but manual focus and no stabilization make it a patience test. User sentiment is low, mostly due to focusing frustration. Worth it only if you know exactly what you're getting into.

Optically, this lens is a mixed bag. The 9-element design with one ED element and UMC coating keeps chromatic aberration low, and when you nail focus, images can be genuinely sharp. But nailing focus is the hard part. The focus ring isn't smooth, it drifts past infinity, and the depth of field at 300mm f/6.3 is razor thin. No stabilization means you'll want a tripod or very high shutter speeds. The donut bokeh is a signature mirror lens quirk, some people love it, most find it distracting.

Compared to the Tamron 28-300mm f/4-7.1 or Sigma 16-300mm f/3.5-6.7, the Rokinon is far smaller and cheaper, but those zooms offer autofocus, stabilization, and much more versatility. The Sony E 18-135mm f/3.5-5.6 OSS is a more practical everyday lens with OSS and AF, though it tops out at 135mm. The Rokinon is a specialist tool, not a generalist. If you need 300mm on a budget and can live with manual focus, it's a unique option. If you need reliable autofocus for wildlife or sports, look elsewhere.

At USD 299 in the US, this is one of the cheapest ways to get 300mm on a mirrorless body. In Japan, prices swing from JPY 46,714 to JPY 69,393 depending on the store, so shop around. The best deal in our database is at the lower end of that JPY range. For the money, you get a solidly built, compact telephoto that can produce nice images if you work within its limits. Just don't expect autofocus or stabilization at this price.

The Rokinon 300mm f/6.3 is a mirror lens, which means it's tiny, light, and cheap for the reach you get. At 340 grams, it's basically a soda can with a 300mm view. But it's manual focus only, has no stabilization, and tops out at f/6.3, so you'll need patience and steady hands.

Skip this if you need autofocus for wildlife or sports, because manual focusing at 300mm is slow and frustrating. Also skip it if you hate tripods or shoot in low light, since f/6.3 and no stabilization make handheld shots a struggle. If you want smooth bokeh, the donut rings will drive you nuts.

This lens is for patient photographers who understand mirror lens limitations and want a compact, affordable 300mm. It's not for action shooters, beginners expecting autofocus, or anyone who hates tripods. If you're willing to slow down, focus carefully, and embrace the donut bokeh, it can deliver surprisingly sharp images in a tiny package.