Rokinon 85mm F/14 as if Umc Lens for Sony a Review
The Rokinon 85mm F1.four AS IF UMC ($399) proves you don't accept to suspension the bank to get a wide-aperture 85mm prime lens, as long as y'all're willing to sacrifice autofocus. The 85mm focal length has long been a favorite of portrait photographers, and serves that purpose well on full-frame and APS-C cameras alike. Rokinon's take on the design shows some softness at f/ane.four, but is crisp when stopped down, and offers a tactile, mechanical feel when adjusting focus. Information technology's a solid value, especially when you consider that it regularly sells for less than its retail toll. Our favorite affordable 85mm lens, the Editors' Pick Nikon AF-Due south Nikkor 85mm f/1.8G ($359.00 at Adorama) , is more than expensive, only it supports autofocus and captures crisper images.
Editors' Note: This review is based on tests performed on the Samyang 85mm F1.4 AS IF UMC. Aside from the branding, the lenses are optically identical, and we expect similar functioning.
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Blueprint
The lens ($359.00 at Adorama) is compact when y'all consider its f/1.iv aperture. It measures 2.viii by iii.1 inches (HD), but is a bit heavy at 1.i pounds and uses big 72mm front filters. Information technology's sold nether two brand names, and in ii versions in each brand. We received the Samyang 85mm F1.iv AS IF UMC ($359.00 at Adorama) , which is the verbal same lens that's sold under the Rokinon banner. In that location'due south also a cinema version available, with focus gears, dual t-stop aperture scales, and dual focus scales. It'south sold as the Samyang 85mm T1.v VDSLR AS IF UMC 2 ($359.00 at Adorama) and the Rokinon 85mm T1.5 Cine DS ($359.00 at Adorama) .
Similar Products
Regardless of the brand name and barrel style, the optics are the same. And Samyang sells the 85mm for every major photographic camera system. Y'all can go information technology for Canon, Four Thirds, Nikon, Pentax, or Sony SLRs, as well every bit for Canon, Fuji, Micro 4 Thirds, Samsung, and Sony mirrorless cameras. The Nikon version of the lens, which we received for review, supports electronic aperture control, just other mounts only support mechanical aperture command. The lens is not optically stabilized, only it's not a characteristic that's commonly plant in 85mm prime lenses.
A reversible lens hood is included. Information technology, and the lens barrel, are constructed from loftier-quality plastic. It feels like to the material used in modern Nikon lenses, but it certainly doesn't match the feel of the metallic barrel that you get with high-end lenses like the Zeiss Otus 1.4/85 ($359.00 at Adorama) . The focus ring is finished with a raised texture and occupies the bulk of the barrel. It turns smoothly and offers a long throw for precise adjustment of focus—that's of import for a lens that tin can capture images with an extremely shallow depth of field. The discontinuity diaphragm features an eight-blade blueprint, which maintains a circular class as it is stopped downwards; expect a polish out-of-focus area behind your subject area, with round highlights.
The lens focuses to 3.28 feet (1 meter), which is pretty typical for an f/1.iv 85mm. The Zeiss Otus does focus closer—to two.6 feet—just yous pay a lot for that extra flake of magnification. Lenses that max out at f/1.eight, like the Nikkor 85mm f/ane.8G and the Zeiss Batis 85mm ($359.00 at Adorama) , practice amend than the Rokinon in terms of shut focus, matching the Otus, merely none are a substitute for a truthful macro lens with 1:1 reproduction capabilities like the Sony Fe 90mm F2.8 Macro M OSS ($359.00 at Adorama) or the Nikon AF-Southward DX Micro-Nikkor 85mm f/3.5G ED VR ($359.00 at Adorama) . That said, those lenses don't capture almost as much light when shot broad open up. There are always trade-offs.
Epitome Quality and Conclusions
I used Imatest to see how sharp the lens is when paired with the 36-megapixel Nikon D810 ($359.00 at Adorama) . At f/1.4 information technology scores 1,957 lines per picture height on a eye-weighted sharpness test. That'due south amend than the ane,800 lines that we usually look for in a photo, but we typically look at results from the loftier-resolution D810 with more scrutiny. While 1,800 lines would be an excellent result on a xvi-megapixel sensor, and a very practiced i on a 24-megapixel one, it'south noticeably soft in a 36-megapixel paradigm. There's also some chromatic aberration at f/1.4—it's visible as majestic-and-green color fringing in high-dissimilarity areas of the frame, likewise as in areas that are on either side of the plane of focus.
Stopping downward to f/2 improves quality all effectually. The sharpness improves dramatically to 2,590 lines, with even performance from edge to border. And there'south steady improvement as you finish down further—2,631 lines at f/2.8, ii,749 at f/four, three,051 at f/5.6, 3,454 at f/8, and 3,669 line at f/11. Diffraction robs some allegiance at f/16 (3,433 lines) and f/22 (two,856 lines). The Nikkor 85mm f/ane.8G, which was likewise tested on the D810, puts up better numbers all around—information technology scores two,598 lines at f/1.8, approaches 3,000 lines at f/2.eight, and peaks at iii,779 lines at f/eleven.
Encounter How Nosotros Exam Digital Cameras
The Rokinon shows no distortion. Illumination is fairly fifty-fifty from corner to corner at f/2 and narrower apertures. Merely at f/i.four there is a some noticeable dimming at the edges (-1EV) and at the corners (-1.5EV). Information technology's non dramatic and can be compensated for easily using software tools.
If you don't mind manual focus, the Rokinon 85mm F1.four AS IF UMC is certainly a lens to consider. It'southward an fantabulous performer starting at f/2, and while its f/one.4 images prove some softness, they're nevertheless quite useable. That'south specially the case for portraiture, where a little chip of softness is desirable to draw your subject in a more pleasing manner. And at narrower apertures the lens is capable of razor-sharp results. Information technology's priced around $400, but regularly sells for about $100 less, making it a pretty solid deal option to boot. It'due south not the equal of our favorite affordable 85mm, the Editors' Selection Nikon AF-S Nikkor 85mm f/1.8G, simply it's available for multiple camera systems, which tin't be said of the Nikon.
Rokinon 85mm F1.4 AS IF UMC
Cons
The Lesser Line
The affordable, versatile Rokinon 85mm F1.4 Equally IF UMC lens isn't the best performer at f/1.4, simply information technology shines when stopped down.
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