The peak sharpness of this lens is found between f/5.6 and f/8, with clarity all across the frame. The Tamron 18-200mm is no different in this respect, with center sharpness outstanding at 18mm and maximum aperture, and very good edge sharpness at these settings too. High-ratio zooms like this are typically sharp at short focal lengths, but it drops as the lens zooms in. Let’s take a look at the sharpness and image quality of the Tamron 18-200mm f/3.5-6.3 Di III VC. DI III RXD DXO PHOTOLAB MANUALManual focus is made easy with the wide focusing ring, which offers a good amount of resistance to make small adjustments without problems. the system allows for sharp images to be taken most of the time at 1/40th second and around half the time at 1/20th second, which is about four stops slower than a lens without image stabilization. The Vibration Compensation system makes up for the lack of a big maximum aperture a bit. Focusing speed is decent but not brilliant, but the AF does tend to hunt for focus quite a bit at the telephoto end of the range. The quietness of the AF motor makes this lens a good choice for video shooters and for candid street photography. The autofocus drive features a silent stepping motor that works brilliantly for the Contrast Detection AF system. The Tamron 18-200mm f/3.5-6.3 Di III VC sounds good on paper and feels good in the hand, but what’s it like in the field? The Tamron 18-200mm f/3.5-6.3 Di III VC in Use Seven rounded diaphragm blades complete the line-up, and the maximum aperture is f/3.5-6.3 while the minimum sits at f/22-40. Optically, this Tamron lens is built with 17 elements in 13 groups, which is quite impressive although it adds to the weight and size. That makes this lens great to use with graduated or polarizing filters. The minimum focusing distance of 45cm is typical of a lens in this focal length, so although it’s no macro lens, it works well to fill the frame at 200mm.įocusing is done internally on the Tamron 18-200mm f/3.5-6.3 Di III VC, which means the 62mm filter thread doesn’t rotate. This makes the camera and lens combo very unbalanced and front-heavy, but until mirrorless camera zoom lenses can be made smaller, it’s going to be something mirrorless shooters have to live with. It weighs 460g and is 10.2cm long, which makes it considerably larger than the 18-55mm kit lens supplied with Sony NEX cameras. While quite a lot of the lens is made from plastic, it has a metal coating and lens mount which helps to make it feel solid and durable. The Tamron 18-200mm f/3.5-6.3 Di III VC is nicely built and comes in silver and black or a plain black finish. This lens would be an ideal choice for general purpose photography covering everything from landscapes to portraits, but does this versatility come at the cost of image quality? That’s what we’re here to find out, so let’s see how this impressive-on-paper lens performs in the real world. DI III RXD DXO PHOTOLAB FULLThe equivalent focal length on a full-frame camera is 27mm at wide-angle, and a full 300mm at the telephoto end. The Tamron 18-200mm f/3.5-6.3 Di III VC comes in Sony E-mount for NEX and Canon EOS M mount, and is designed to be an all-in-one lens that goes as wide as 18mm but also zooms in to 200mm. It’s not a fast lens by any stretch, with f/3.5 being the maximum aperture, and it’s not all that cheap, either, although Sony’s own equivalent 18-200mm lens is more expensive. It also comes with Tamron’s brilliant Vibration Compensation (VC) system and fast stepping AF motor. Tamron had an ambitious goal with the Tamron 18-200mm f/3.5-6.3 Di III VC, promising both wide-angle and telephoto focal lengths in a compact package for mirrorless cameras.
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