Tamron A17NII AF 70-300mm F/4-5.6 Di LD Macro 1:2 Nikon+Motor

Product Information

Pincushion distortion increases over the focal length range until becoming moderately strong at 300mm. The Tamron 70-300mm F4.5-6.3 Di III RXD features a high-speed RXD (Rapid eXtra-silent stepping Drive) motor unit that allows virtually silent auto-focusing, making it well-suited to video use. Lenses – The lens has dust inside that may affect images. The rubber zoom/focus ring is coming away from the barrel of the lens. here once when shooting at a military event the soldiers where in the shade and after half a hour of shooting it wouldn't In terms of weather sealing, despite the lens’s external zoom mechanism, I was impressed. The Tamron 70-300mm f/4.5-6.3 has a lot of internal rubber sealing, as well as a rear rubber gasket. I used the lens in dusty, windy, and rainy conditions, but no grit or moisture ever seemed to get in. The front element of the lens also has a fluorine coating to repel dust and water, which is a great feature for landscape photography. The lens mount has a rubber gasket to minimize dust and moisture in the lens

Advanced features include ring-type ultrasonic autofocus. Like the similar system fitted in the Nikon Nikkor AF-S VR 70-300mm f/4.5-5.6G IF-ED, it's fast, ultra-quiet and comes complete with full-time manual override in single or 'one-shot' autofocus mode.

Bokeh is a word used for the out-of-focus areas of a photograph, and is usually described in qualitative terms, such as smooth / creamy / harsh etc. Corner shading is virtually non-existent when the lens is mounted on the sub-frame 7D. On the 1Ds Mark III however, it's a different story: you have to stop down significantly to get images which don't show some kind of light falloff in the corners. At its worst, you're looking at extreme corners which are almost a full stop darker than the center - you see this at 100mm and 135mm when used wide open. To remove the impact of corner shading you need to stop down to at least ƒ/8.

Overall I feel the Tamron is an excellent choice for those looking for a budget telephoto addition to the kit lens supplied with their camera. Focusing is fully internal but zooming is not, with the length of the lens changing as you zoom from 70 to 300mm. Chromatic aberrations, typically seen as purple or blue fringes along contrasty edges, are fairly well controlled with this lens - the example below shows the worst-case scenario. Light Fall-off and DistortionThe larger pixels of our full-frame Canon EOS-5D test bed make for somewhat better blur performance. We were surprised by how well the lens did in the corners of the frame, where we often see increased softness at the edges of a lens' image circle. A surprisingly good performance, as long as your camera's pixels are large enough. Much more problematic is the inconsistent focus accuracy I'm experiencing from the Tamron 70-300 VC. I'm in the market for the best ROI lens period. Fact is, this lens has few features yet the price. Plus, Far cheaper lens in the past have had Lens-based stabilization. I could easily buy the Sony 70-350 right now but I won't NOT because of price, but because it's specifically the APS-C camera. Otherwise it would already be in my collection. Sigma E-mount 100-400mm f/5-6.3 DG DN OS lens, have not seen anything to convince it's a good value even with Lens-based stabilization.

to shoot them you need to anticipate their trajectory and focus on the ground fist then press the shutterFor its low price, the Tamron 70-300mm f/4-5.6 Di VC USD Lens delivers rather impressive overall image quality. The close-focus point is 0.8m / 31.5inch from the film/sensor plane at 70mm and 1.5m / 59.1inch at 300mm, with a maximum reproduction ratio of 1:9.4 at 70mm and 1:5.1 at 300mm. Bokeh Maybe the higher price is the result of Nikon’s licensing fees, or maybe it’s just the natural result of competition. To be specific, Sony users already have the Sony 70-300mm f/4.5-5.6 OSS and the Sony 70-200mm f/4 OSS that this Tamron lens must compete with, whereas Nikon users don’t have any native alternatives. Minimum object distance is 0.67m (2.2ft.) with a magnification of 1:7.4 and a working distance of 0.50m at 70mm focal length. At 300mm focal length maximum magnification is 1:4.6 which is not bad and results in a working distance of 1.2m. A magnification of 1:10 is achieved at 3.06m. The F-Nikkor 70-300 achieves 1:3.8 at 300mm focal length and 0.97m working distance. The Z-Nikkor 100-400 achieve its maximum magnification of 1:2.5 at 400mm focal length and 0.68m working distance. [0]