Samyang / Walimex / Rokinon 7.5mm f / 3.5 at Olympus OM-D

Samyang / Walimex / Rokinon 7.5mm f / 3.5 at Olympus OM-D

Samyang 7.5mm F3.5 Lens for Micro Four Thirds connection - black (Camera)

Customer Review

Background: The objective is original from Samyang Optics Co., Ltd. made of Korea and in principle also sold under this name worldwide. In this country, it is also under the label Walimex and to find z. B. in the US under the label Rokinon. I searched with Google under all three names for metrological and practical tests, the course reviews the models and the American parent company. I have become more professional and find it was once surprised and curious. So sought under all three names also offers at Amazon and with a provider a version with a very good price found in silver. Since I could no longer resist. Clicked and bought very excited about first impressions and tests.

Mechanics: The lens is fully mechanical, therefore has aperture ring and Entferungsring. The bayonet is made of shiny chromed metal and forms in the side view and the bottom, shiny part. Except for the red trim ring (looks very good in the silver version of) the rest of the plastic version. The hue of the silver is slightly warm like my Olympus 75mm f / 1.8 and not as cold as in my Olympus 45mm f / 1.8. The aperture ring snaps tired and offers from aperture 4 and half steps. That's enough very good for the photographic practice. The focusing ring also runs full. If you rather slowly moves it, which is normal during manual focus, I feel the counter-torque as the right and comfortable. If you really want to quickly turn the focus ring, you need to be, however, muster more strength than I find enjoyable. At infinity the version of the front lens protrudes approximately 1 mm, in close range about 5 mm. Then a gap is happening on. Whether the gap actually favors the risk of penetration of dust or dirt, I do not really know, but I always keep the lens on at infinity. So much for the mechanics. If I 45 mm f / 1.8 compare the lens with the Olympus, it does mechanically in the same class. A carrying bag and a well-made "Snap In" -Objektivdeckel are included. Since the lens cap is made of hard plastic, you can still lining to prevent scratches the inside cover with a little velvet adhesive film. Despite these marginal - from my point of view everything cleaned and well worth five stars. One or the other would prefer a full metal version at the expense of weight. But that will probably always some personal view. For me personally a good quality plastic frame is comfortable with low weight.

Optics (revised by testing a second lens): The first practical recordings out of an airplane were impressive from the effect her. Next, I was interested in bringing the best results which working aperture. I've been using for testing pragmatically the exposed aggregate concrete wall of a nearby house transformer with infinitely many embedded pebbles. In a fisheye with a picture angle of 180 degrees still difficult because one inevitably sees a scrap sky or ground in the extreme corners. For viewing I use a hardware-calibrated 24 "monitor from Eizo and the 100% representation Well:. The results in the work aperture 3.5 and 4.0 are in fact identical in the middle, the picture is sharp. towards the corners, it is becoming increasingly blurred. In Aperture 4.8, the image from the center to the corners a touch sharper and a little brighter and more defined. At aperture 5.6 is center and corners are again a touch sharper, but above all the optimum is in terms of brightness, clarity and contrast achieved, so that we then find even in the even smaller aperture. Aperture 6.7 is equipped with an aperture of 5.6 at least equivalent, is indeed close to the beneficial Aperture 6.3 the Olympus OM-D. In a further stopping down to f 8, the resolution increases in the middle again a hint from (incipient influence of diffraction), the corners appear as good as at f / 5.6 and f / 6.7. Aperture 8 provides even greater depth of field, so you have more than Aperture 5.6 the distance ring is easy in most designs to infinity and manual focusing can spare. All in all: f / 3.5 to f / 4.8, I would rather not use because resolution, clarity and contrast are not ideal, after various tests, the vignetting and CA are still appreciably. F / 5.6 and f / 6.7 are my favorite resolution, but f / 8.0 is despite slight easing dessehr in the center in favor of the higher depth of field or when a lot of sun, a very sensible alternative. Aperture 11 I avoid the Olympus OM-D because of diffraction effects in principle - but only a little to do with physics and has not the lenses. All in all, earned the lens for the optical results in my opinion, five stars. We must not forget that a 100% representation does not occur in everyday life and the very small differences in quality in the ideal range f / 5.6 to f / 8.0 at normal screen images and print sizes not time are visible - convince the image results.

Centralization: After repeatedly thinks one or the other lens manufacturers to be able to move the final to the end customer, I have taken the trouble to compare the four corners of an image together. They seem to me to have my copy in the same resolution, which speaks for a proper centering of the lenses. Again, sigh and five stars. But with a second copy I unfortunately had a big blur below observe right - this lens was not well centered and went back. It's a shame - unfortunately we end users need to check whether the delivered quality is right (this applies not only Walimex).

Price / Performance: Comparison with the Panasonic fisheye lens 8 mm f / 3.5 is still the most sense, although this also has an auto focus. The Samyang / Walimex / Rokinon 7.5mm f / 3.5 comes to comparing the Internet away well, the price is both in comparison as well as absolutely very interesting (even without special offer). So again five stars.

Note for manual focusing: I have the key "Fn 2" occupied with my Olympus OM-D next to the shutter release with the zoom function and asked the magnifying glass on a factor of 5. This makes it relatively easy possible to manually adjust the distance accurately. Except for the above testing purposes I have but so far dispensed with manual removal setting. When set to the so-called. Hyperfokalentfernung foreground and background are displayed equally sharp. With a focal length of 8 mm (especially here at 7,5 mm) and with a aperture of 5.6 it is 1.27 m, at f 8 it is 0.89 m. I once set the distance 1.30 m and 0.90 m precisely manually and so marked with a black marker on the distance scale that they can be brought into alignment with the line of infinity. The new points I covered with some official documents Tesa tape. With this solution I can live elegantly. Also, I have marked the true infinity of my personal combination of camera and lens in the same way. Warning: The specified by the manufacturer Infinity manual lenses true, unfortunately never exactly (the explanation here would go beyond the scope).

Conclusion: From today's perspective, I give in total a full five-star recommendation. The fisheye lens is in my equipment and complements my Olympus 9-18 mm downwards. In sum me the combination costs less than the Panasonic 7-14 mm alone, but from my personal point of view offers more flexibility. But even that is again a personal opinion, and perhaps some commentators have made their users view another view.

Last, but not least: If my review is useful, I would appreciate a click on the "review was helpful" button. Then I know that my effort has really helped others as well. Thanks!

ps: Little by little I write in my reviews, other components of my Olympus equipment.

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