Notice how the beam through the center is straight, and others are are curved. I like the skinny and “vintage” look of Pergear 12mm f/2 lens – it is all metal and feels quite solid and durable. If you really want to take a look at the CA in the Canon .cr2 RAW image, you can download it here ( Coma / CA  Test Image ). The lens is not complety free of these aberrations as looking at maximum magnification in light room (3:1), I can see just a hint of magenta/green CA on the edges of the fan blades in the room photograph above. The f/2.8 maximum aperture is effective in low light situations and enables some measure of shallow depth of field control. So, this comparison is between the f/2.4 version, Rokinon/Samyang’s higher-end 14mm lens. The first is from the upper Right corner, the second is from the upper Left corner, and the third is centered on the upper edge. Iâm finding itâs not easy to get a quantitative measure of vignetting with a lens that has a 180 degree field of view. If you can adjust to their quirks, the image quality can equal or even exceed that from lenses several times their price. Rokinon is the same company as Samyang, above, but they brand some of their lenses differently than others. The stereoscopic projection is conformal and retains angles but not areas. Its tight, but will twist off. Just for fun, I tried a photo at close to minimum focus distance (about 8 inches). My Web Host may get hostile! Even at a distance of 8 inches (about 4 inches from the front of the lens), the grid mat did not completely fill the full frame image. The Rokinon 12mm fisheye lens takes us to another level of lens performance and user experience. The stops at both ends of focus are slighly soft, like coming to a stop against a compliant pad. The star motion appears somewhat larger in the upper Left corner. At 12mm focal length, any object more than a few feet away is difficult to critically focus through the view finder because detail is so small. There is very little flare in this image. The manual focus ring has an extremely nice feel to the rotation. It is very compact at only 2.33″ long (59.1mm) with a diameter of 2.85 inches (72.5mm). For a Coma test I made the shot below from my deck, and yes their are a lot of trees.  I had a clear sky on Christmas night. Rokinon 14mm f/2.4 3. The focus indicators always back-focus a lot. Irix 15mm f/2.4 Since the Irix and Rokinon lenses are f/2.4 rather than f/2.8, I’m including photos at both apertures rather than just wide open or just f/2.8… With the 15 second exposure there is only a slight star trail (motion blur) visible. It’s built out of high quality plastics with a metallic lens mount. So, between 3 ft and infinity, estimating distance and setting the focus ring based on this estimate is not going to work well. The new Rokinon 12mm F2.8 Fisheye Lens for Full Frame Cameras now makes it affordable to realize dramatic 180 Degree views with exceptional optical performance and Full Frame sensor coverage. The Rokinon 8mm f/2.8 UMC Fish-Eye II Lens is a prime fisheye lens specifically designed for mirrorless cameras with APS-C sized image sensors. The Zeiss came in at $999, whereas the Rokinon was available for $375. The body is the typical mix of metal and engineered plastics, but it has a very handsome finish. I am on the learning curve for finding the best subjects suitable for this lens and I plan to have some fun playing with it to find out what works best. The lens hood also snaps in place with a … The aperture ring moves nicely and has well defined clicks for each half step (full stops are labelled on the ring). The first result was a measured vignette from center to corner of about 1 1/2 Stops at F 2.8 and gradually improving to about 1/2 stop at F 8. As a manual focus, manual aperture lens, it offers a wide, easy to grip focus ring and bright aperture, distance and depth of field markings. The lens is promoted as a stereoscopic projection design. Name: Rokinon 12mm f/2.8 Ultra Wide Fisheye Lens for Canon EOS EF DSLR Cameras. This is my first experience with a fish-eye lens so there is going to be a learning curve and Iâm still climbing that curve. The lens' sophisticated optical design consists of 12 lens elements arranged in 8 groups including three elements made of low dispersion ED glass and two aspherical lens elements to minimize coma and chromatic aberrations. To me, the CA was easy to eliminate and therefore not an issue. The Rokinon 12mm F2.8 ED AS NCS Fish-eye Lens provides a 180º diagonal angle of view on full-frame cameras for an ultra-wide angle, distorted perspective that is useful for architectural interiors, landscapes and creative experimentation in any photographic application. The Rokinon 18mm F2.8 AF Sony E ($399.99) is a svelte lens with a big, wide view. The 12mm f/2.8 ED AS IF NCS UMC Fisheye Lens for Nikon F Mount from Rokinon provides a 180° diagonal angle of view on full-frame cameras for an ultra-wide angle, distorted perspective that is useful for architectural interiors, landscapes and creative experimentation in any photographic application. Because of the large depth of field, critical focus wonât be necessary in every situation. Laowa 12mm f/2.8 2. I've purchased my sample used for the price of new 7artisans 12mm F2.8. Rokinon 12mm F2 SC is about 1/2 times more expensive, however it's massively available on the used lens market. An ultra wide-angle fisheye lens with a 12mm focal length on full-frame cameras and it can provide a 118º diagonal angle of view on Canon APS-C sensor cameras. Covers over 180º Angle of View / Field Of View. Toes and tri-pod legs can also get in the way.  For all except the F 2.8 to F 4 gap,  1/2 stop clicks also are present. Obviously there is a considerable amount of focus softness in the extreme corner of the image at F 2.8, and gradually improving thru F 5.6, with little if any more improvement at F 8. A removable petal-shaped lens hood is included. The lens has such a broad DOF that it is difficult to tell where focus is sharp when looking through the viewfinder. The lens' sophisticated optical design consists of 12 lens elements arranged in 8 groups including three elements made of low dispersion ED glass and two aspherical lens elements to minimize coma and chromatic aberrations. ND filters may not see many straight horizon lines on a fish-eye lens. Iâm posting some photos for you to decide for yourself if the lens meets your needs. Keith has been trying out the Canon EF version on a 50MP Canon 5Ds body. Below is a shot (at ISO 100) of an interior with wood beams. This will never become your Macro lens, but it is able to produce sharp images of objects close to the glass. Note: I bought both Rokinon 14mm f/2.8 lenses from Amazon new. Providing a 35mm-equivalent focal length of 12mm and full 180° angle of view, this lens is well-suited for creative applications as … The selected Focus point is at the center of the frame. I’m going to include full images, center crops, and corner crops for all five lenses below. I am not going to have an issue shooting at night with this lens at F 2.8. To get an idea of sharpness Iâm showing crops at the extreme upper left corner and in the center of the image at full pixel resolution. Next I tried shooting into heavy morning fog. The former because an attractive pricing dip in Amazon's demand steering happened to occur when I was looking, the latter because one turned up used as a good buy on eBay when I was looking to pick up that lens. Aperture setting is fully manual, and the camera will not record the selected setting on Canon EOS models. The f/2.8 maximum aperture is …  Itâs probably too soon to make a sweeping conclusion here, but so far, so good. Focus is achieved without any lengthening or rotation of the front lens element, Low Chromatic Aberration: All colors to come into focus in exactly the same place for reduced color fringing and increased sharpness, Helps prevent haze, lack of contrast and artifacts scattered throughout the image from bright source(s) of light, Helps prevent a blur that looks like a comet's tail that can occur at a lens edge, State of the art antireflective technology utilizing ultra-low refractive index Nano particle coatings for optimum contrast, light transmission and control of ghosts and flare. This is a beautifully designed little lens. Manual aperture control with bright markings for aperture, distance and depth of field. For astrophotography, shooting at F 2.8 will possibly still be acceptable (More on this later).  It would be difficult (maybe impossible) to make a custom filter holder because the field of view is so wide, but thereâs probably not much demand for a filter on this lens. The lens is designed to give a non-rectilinear image mapping so it would be difficult to separate out any unintended distortion.  Also, the sun is behind some light clouds with blown-out highlights in the clouds. Again, it will be interesting to see if others see this phenomena. This instantly disappears if you click the box âremove chromatic aberrationsâ box in the lens corrections section of LR. It has huge lens hood and quite wide front lens body area. If extreme corner sharpness is important, then shooting at F 5.6 or F 8 will produce outstanding image sharpness over the entire frame. The ROKINON 12mm f/2.8 Fisheye Lens was designed specifically to provide a 180º diagonal angle of view on full-frame sensors. Testing for Coma Rokinon 12mm F2.8 Shot at F2.8, © Ronald Brunsvold 2014, All rights reserved, Canon EF 400mm f4 DO II Lens Review (BIF), Rokinon 12mm F2.8 ED AS NCS FishEye Lens Review, Wide Angle Lenses for Night / Low Light Photography with Stars. Focus ring position is same, but 7artisans has more comfortable aperture… Nikon 14-24mm f/2.8 5. You may have to download and expand to get a closer view. Extra low dispersion and aspherical lens elements reduce aberrations for sharp, color-accurate imaging. A removable petal-shaped lens hood is included. You're welcome. There is also a little bit of CA noticeable in some of the Stars of the night shot above. So, yes there was a bit of CA in some stars showing as a slight blue colored âEchoâ. Highly effective nanocrystal anti-reflection (NCS) coating applied together with UMC coatings improve light transmission and reduce ghosting. The lens is well built and can produce very sharp images. Ofereço serviços fotográficos de precisão em http://instagram.com/marcellomirandafoto. Also easily corrected. Its distorted perspective is useful for interiors, landscapes, group shots and many creative wide-angle applications. The Canon compatible version that I have weighs 515g, and balances nicely on my Canon 5D III Camera Body. To my eye, the center frame expansion of the Room image looks quite sharp from F 2.8 thru F 8 will little discernible difference. I sold my Rokinon 12mm f2.0 because I was constantly cropping my 12mm photos and got the 14mm f2.8 instead. The ROKINON 12mm f/2.8 Fisheye Lens was designed specifically to enable a 180º diagonal angle of view on full-frame sensors. The markings are more accurate than they were on my other Rokinon lenses, but still a bit off (about 6-9 in off at 3 ft, and 2-3 in off at 1ft). The 14mm Ultra Wide-Angle f/2.8 IF ED UMC Lens For Canon from Rokinon gives you approximately a 115° view with dramatic results when used with a full frame digital camera or 35mm film camera. The top center crop is not showing any visible coma. Format: full frame fisheye; works well on APS-C sensor cameras as an 18mm lens. Update: I've used the 12mm f/2 version of the Rokinon and Samyang for Samsung NX …