The Rokinon F2.0 ED UMC Telephoto Cameras lens is a manual-focus prime built for Canon digital SLR bodies. The listing leads with three things: full frame compatibility with an 18.8 degree angle of view on full frame and 12.4 degrees on APS-C, Ultra Multi-Coated optics, and a fast f2.0 maximum aperture that stops down to f22.
The owner this lens is built around is a photographer who shoots portraits, events or video and doesn’t mind turning a focus ring by hand. They’d use it often, probably on a full frame body, sometimes on an APS-C body where the tighter angle of view suits head-and-shoulders work. The trade-off is simple and it’s real: the listing describes a manual focus lens, and it doesn’t mention stabilization, in exchange for the f2.0 aperture and the optical design. Whether that’s a fair swap depends on what you shoot, and the sections below settle it.
- 18.8 degree angle of view on full frame
- 12.4 degree angle of view on APS-C
- Rokinon Ultra Multi-Coated (UMC) Optics
- Works with full frame and APS-C E mount
Table of Contents
Who Should Buy This 135mm Prime
This lens suits three kinds of buyers, and each one comes straight off the listing. The first is the portrait shooter who works with a subject who can hold still, because manual focus on a long prime asks for patience and a steady hand. The 18.8 degree angle of view on full frame is a classic portrait framing, and the f2.0 to f22 aperture range gives them control over how much of the face stays sharp. They’ll use it often, and they’ll probably keep a tripod nearby for the slower end of that range.
The second is the video shooter. The listing mentions photography and video in the same breath, and the 9 diaphragm blades matter here — a rounded, multi-blade aperture holds its shape as you stop down, which affects how out-of-focus highlights render in the background of a shot. A videographer who pulls focus by hand anyway won’t miss autofocus, and the removable lens hood helps when they’re shooting toward a window or a lamp.
The third is the APS-C owner who wants a tighter crop. On an APS-C body the angle of view narrows to 12.4 degrees, which turns this into a longer, tighter lens than it is on full frame. Someone shooting outdoor portraits, compressed landscapes or distant detail gets more reach from the same glass. The listing says the lens is compatible with both full frame and APS-C format mirrorless E mount cameras, so check your mount before ordering.
Two buyers should skip it. Anyone who shoots fast-moving subjects — kids, sports, animals — will fight manual focus on every frame, and they should look for a lens that focuses itself. Anyone who needs stabilization for handheld work in low light should look for a lens that offers it, because the listing doesn’t mention vibration reduction of any kind.
One more buyer belongs on the list, and the listing names the feature that puts them there: the extra-low dispersion element. One ED lens element reduces chromatic aberrations, the color fringing that shows up along high-contrast edges. If you shoot backlit portraits, bare branches against a bright sky, or any frame with a hard line between dark and light, that element is doing work you’d otherwise fix later. It is the one optical claim in the listing beyond the multi-coating, and it is the reason to pick this over a long prime without an ED element.
The minimum focusing distance of 2.6 ft. decides a fourth case. That is close enough to fill the frame with a face or a small object without backing across the room. If your work lives at arm’s length — details, product shots, tight crops — this lens reaches where a longer telephoto cannot. If you need to get closer than 2.6 ft., it will not, and no amount of stopping down changes that.
What the Rokinon 135mm Lens Actually Does
Each part of this lens does a job, and the listing groups those jobs clearly enough to walk through them one at a time.
Getting a Fast, Bright Frame in Low Light
The headline number is the f2.0 maximum aperture, and the listing states it as the lens’s widest setting. A wider aperture lets more light reach the sensor, which means you can shoot in dim rooms, at dusk or under stage lighting without pushing your ISO as hard. The aperture range runs from f2.0 down to f22, so the same lens covers wide-open available-light work and stopped-down landscape work where you want the whole frame sharp.
Keeping Colors and Edges Clean
Rokinon’s Ultra Multi-Coating is the second job. Multi-coating reduces the stray reflections that cause flare and wash out contrast when a bright source sits in or near the frame. The listing also names one extra-low dispersion (ED) lens element, and ED glass is there to reduce chromatic aberrations — the colored fringing that shows up along high-contrast edges, like a dark branch against a bright sky. One ED element is what the listing states, not a stack of them, so the correction is targeted rather than absolute. For portraits and general outdoor work that’s usually enough; for the most demanding edge cases you’d stop down a little.
Controlling Background Blur
The 9 diaphragm blades do a specific job: they shape the out-of-focus areas behind your subject. More blades generally means rounder highlights and smoother background separation, which is why portrait and video shooters care about the count. Combined with the f2.0 aperture and the long focal length, this is the part of the lens that produces the compressed, separated look people buy a 135mm prime for.
Framing on Full Frame and APS-C
The angle of view changes with your sensor. On full frame the listing gives 18.8 degrees, a moderate telephoto framing good for portraits and events. On APS-C it narrows to 12.4 degrees, giving a tighter crop from the same position. The minimum focusing distance is 2.6 ft, which sets how close you can get before the lens stops focusing — closer than that and you’ll need to step back. A removable lens hood ships with the lens and cuts stray light from the sides.
The full list of listed details sits below.
| # | What Amazon lists |
|---|---|
| 1 | Full frame compatible with an 18.8 degree angle of view on full frame cameras and a 12.4 angle of view on APS-C cameras. |
| 2 | Rokinon Ultra Multi-Coated (UMC) Optics. Compatible with both full frame and APS-C format mirrorless E mount cameras |
| 3 | Minimum Focusing Distance of 2.6 ft. with fast apertures of f2.0 – f22 |
| 4 | Features 9 diaphragm blades and includes a removable lens hood.One extra-low dispersion (ED) lens element reduces chromatic aberrations |
Rokinon 135mm Strengths and Limits
Pros
- Fast f2.0 aperture gathers light in dim settings
- 9 diaphragm blades shape background blur
- ED element targets chromatic aberrations
- Works on full frame and APS-C bodies
- Removable lens hood included
Cons
- Listing states one ED element, not several
Is the Rokinon 135mm Worth Buying?
Buy it if you shoot portraits, events or video and you’re comfortable focusing by hand; skip it if you need autofocus or stabilization to get the shot. That’s the honest split, and it comes down to how you work rather than how the lens performs on paper.
For the portrait shooter, yes. The f2.0 aperture and the 9 diaphragm blades are the two features that earn their place, and the 18.8 degree angle of view on full frame frames a face the way a long prime should. The ED element keeps colored fringing in check along high-contrast edges, and the Ultra Multi-Coating protects contrast when light comes in from the side. You’ll shoot slower than you would with an autofocus lens, and you’ll miss some frames while you learn the focus ring, but the glass does what you bought it for.
Extra-low dispersion glass is doing quiet work here. Chromatic aberration shows up as color fringing along high-contrast edges, and it is the kind of flaw you notice most in exactly the frames you care about. The ED glass is the reason that stays under control.
For the video shooter, it depends on one thing: whether you already pull focus manually. If you do, the aperture range and blade count give you the background rendering you want, and the removable hood helps outdoors. If you rely on autofocus for run-and-gun work, this isn’t the lens for you.
For the APS-C owner, the tighter angle of view is a genuine bonus, turning the lens into a longer reach than its full frame framing suggests. Just confirm your mount, since the listing names mirrorless E mount alongside the Canon digital SLR fit.
The close focus figure is worth knowing before you commit. Minimum focusing distance is 2.6 ft., which is tight enough for a tight head-and-shoulders frame but not a macro working distance. If your work lives at arm’s length from the subject, plan around that.
The trade-off, said plainly: you’re trading automation for aperture and glass. If that trade doesn’t suit your shooting, look for a lens that focuses itself and offers stabilization. If it does, this one covers the ground.
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Frequently Asked Questions
Does this lens focus automatically on a Canon DSLR?
No. The listing describes a manual focus lens and doesn’t mention autofocus at all, so you turn the focus ring yourself. On a Canon digital SLR body that means the camera won’t drive focus for you, and you’ll rely on the viewfinder or live view to confirm sharpness. For still subjects that’s manageable; for moving ones it’s a real constraint, and it’s the single biggest thing to weigh before buying.
What comes in the box with the lens?
The listing states that a removable lens hood is included, and it names the lens itself. Beyond those two items, the listing doesn’t itemize front and rear caps, a pouch or a case, so confirm with the seller if those matter to you.
Do I need to maintain or service this lens?
There’s nothing in the listing about a service schedule, refills or renewals, which is normal for a prime lens — it has no consumable parts. Your upkeep is basic: keep the glass clean, store it with the hood off if you like, and protect it from knocks.
Will it work on my camera body?
It depends on your mount. The listing gives compatibility with Canon digital SLR cameras and also with full frame and APS-C format mirrorless E mount cameras, which are two different fittings. Match the version to your body before ordering, because the wrong mount won’t attach.
Is a manual focus prime still worth owning?
Yes, for the right shooter. Manual focus primes have stayed popular because they put the aperture and the glass first and leave the electronics out. If you shoot portraits, products, landscapes or planned video, focusing by hand is a skill worth having. If you shoot fast action, it’s a handicap, and you should look elsewhere.