Rokinon 135mm F 2 0 ED UMC Avis | 54 Données comparées

The Samyang 135mm f/2 ED UMC is a manual-focus portrait prime that delivers exceptional, top-tier optical performance at a highly competitive retail price of $549. Reviewer Dustin Abbott notes that its optical rendering actually eclipses the legendary Canon EF 135mm f/2L, showing far superior sharpness, minimal chromatic aberrations, and highly impressive contrast even when shot wide open at f/2. The lens creates a beautiful three-dimensional separation between the subject and the background, complemented by creamy, smooth bokeh and an outstanding minimum focus distance of just 2.6 feet (80cm). Built with engineered plastics around a sturdy metal mount, the lens includes a well-sized hood and a protective pouch. However, the lens has notable drawbacks, primarily centered around its complete lack of autofocus and electronic coupling. Except for the Nikon F mount version, it lacks a focus confirmation chip, making nailing the razor-thin depth of field at f/2 incredibly difficult without using Live View magnification or specialized focus screens. The total lack of electronics also means no EXIF data is transmitted to the camera body, which complicates photo tracking and advanced ETTL...

The Samyang 135mm f/2 ED UMC lens is lauded for offering exceptional, highly sharp image quality with impressive contrast, even at a wide f/2 aperture. It is characterized as a budget-friendly, manual-focus option ideal for portraiture and astrophotography, featuring a smooth, precise focus ring and 9-blade diaphragm for superior bokeh. Conversely, the lens entirely lacks autofocus capabilities and electronic contacts on certain mounts, resulting in no EXIF data transmission. Additional drawbacks identified include significant focus shift at smaller apertures, absence of weather sealing, and a relatively heavy, bulky design.

The Samyang 135mm f2.0 ED UMC is a top-performing, budget-friendly manual focus lens that delivers highly recommended optical quality for around 500 EUR. Its standout pros include excellent image sharpness and contrast across full-frame sensors even when wide open at f2.0, along with a creamy background Bokeh. Additionally, it features exceptionally low longitudinal chromatic aberrations (loCA) and strong flare resistance, enabling it to optically meet or exceed the performance of much more expensive rivals like the 1800 EUR Zeiss 135mm f2.0 Apo Sonnar. The most critical con of the lens is its complete lack of autofocus, which makes nailing focus difficult due to the shallow depth of field inherent to a 135mm focal length. Photographers shooting fast or requiring instant accuracy risk missing 40–70% of their shots without a tripod or mirrorless assist tools like focus peaking. Other notable downsides include a noticeably "plasticky" build quality that lacks the durability of high-end lenses, a lack of weather sealing at the lens mount, and no built-in image stabilization.

The Rokinon 135mm f/2 ED UMC (also sold as Samyang in Europe) is a highly recommended manual-focus telephoto lens purpose-built for widefield astrophotography. Weighing 31.04 ounces (880 grams), it is lightweight enough to be easily supported by small, portable tracking mounts. Reviewer Paweł Białecki highlights its versatility, noting that its focal length is ideal for capturing massive deep-sky structures like the North America Nebula, while still allowing enough detail to crop into smaller targets like the Orion Nebula or Pleiades star cluster. For optimal results, the reviewer recommends using a Bahtinov mask at f/2.0 to establish focus on a bright star, and then stepping the lens down to f/2.8 for imaging. The lens boasts several distinct advantages, most notably its edge-to-edge sharpness, budget-friendly price point, and fast optical performance. The lack of image stabilization is also viewed as a plus, as it keeps the overall cost down for a feature that is useless for tracked astronomy. However, the review notes a few prominent drawbacks when shooting wide open at f/2.0, including a loss of razor-sharpness, heavy vignetting that complicates post-processing...

The Samyang/Rokinon 135mm F2 lens is highlighted as an exceptionally cost-effective, high-performing tool for deep-sky imaging, providing a great "bang for your buck" deal for astrophotographers. The core pros noted in the review include its massive F2 aperture, which captures a tremendous amount of light to reveal faint celestial details while keeping exposure times short. Its prime, fixed 135mm focal length ensures incredible sharpness from the center all the way to the extreme edges of the field of view, maintaining pinpoint stars without the optical compromises common in zoom lenses. Additionally, at just under two pounds, its lightweight profile makes it highly forgiving and perfectly suited for entry-level tracking mounts like the Skyguider Pro. The review touches on a few minor cons and points of confusion regarding the lens's design and naming. A potential downside is that the hard stop on the focus ring extends slightly past infinity, meaning astrophotographers cannot simply turn the ring to the end and must instead find exact focus manually. Furthermore, the naming of the identical Samyang and Rokinon variants causes unnecessary customer confusion, though...

The Samyang 135mm f/2 ED UMC review by Dan Pandrea highlights its impressive optical performance and budget-friendly appeal. Bought for roughly $220, the reviewer notes that the lens delivers excellent sharpness, a smooth and precise focus ring, and beautiful bokeh rendering. Because the subjects were mostly calm cats, the manual-only functionality did not hinder the shooting process on a Sony a6300 body. However, the review points out clear limitations when using it for specialized photography genres. The main drawback encountered was an inability to focus to infinity during an astrophotography session, though this was attributed to using a modified Sony a5100 sensor that lacked its original filter. Additionally, the audible shutter noise from the camera body occasionally startled the animal subjects, which is a consideration when trying to pair a loud camera with a slow, manual-focus telephoto lens.

The Rokinon (Samyang) 135mm f/2 ED UMC is a highly capable and affordable manual-focus telephoto lens that delivers exceptional performance for wide-field astrophotography. Its standout feature is its ultra-fast f/2 aperture, which captures light quickly and enables photographers to shoot "wide open" without sacrificing image quality; unlike cheaper alternatives, it maintains sharp, pinpoint stars all the way to the edges of both cropped and full-frame sensors without noticeable chromatic aberration or distortion. With a 135mm focal length, it is ideally suited for framing vast deep-sky targets—such as the Rho Ophiuchi cloud complex, the Andromeda Galaxy, or pairing the Rosette and Christmas Tree nebulae in a single shot—as well as capturing small constellations like Cassiopeia. Furthermore, its flat-ended lens hood makes taking calibration flats straightforward, and its budget-friendly price tag ($395 to $600) makes it a highly accessible alternative to pricier first-party lenses. Despite its high value, the lens has several limitations that users must accommodate. Its manual-only focus mechanism requires tools like a Bahtinov mask or aftermarket motorized auto-focusers (such as the 3D-printed Astronetics mount system) to achieve perfect focus...

The ePHOTOzine review highlights the Samyang 135mm f/2 ED UMC as an outstanding, budget-friendly manual focus telephoto lens, praising its solid build quality and exceptional sharpness, with top-tier resolution starting at f/2. It delivers minimal distortion and chromatic aberrations, producing beautiful, creamy bokeh through a 9-blade diaphragm. On the downside, the lens is fully manual with no electronic coupling, making precise focus challenging at f/2, and it lacks weather sealing and image stabilization. While some vignetting occurs at maximum aperture, the lens’s superior image quality is considered a strong value proposition by ePHOTOzine, despite these handling limitations.

The Rokinon 135mm F2.0 ED UMC Telephoto lens, an Editors' Choice winner, offers exceptional edge-to-edge sharpness and light-gathering capabilities that rival far more expensive alternatives. Optically, the lens delivers 3,718 lines of resolution at f/8, with no distortion and virtually no chromatic aberrations. However, the lens is a completely manual, full-frame prime without autofocus or image stabilization. While it provides immense value, it features a less premium, non-metal build and exhibits noticeable vignetting when shot wide open at f/2.0.