Tamron A005E SP AF 70-300 F/4-5.6 Di VC USD Lens for Canon

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I can tell you this, the tamron 70-300 is sharp! It is sharp at 300 mm, it is sharp wide open (@300mm) and focus accuracy is almost 100%. I feel it is on the same level or better than the canon 70-300 L with respect to sharpness. Both canons where less sharp at 300mm wide open. The tamron is better. Where this lens stands out is focus accuracy. It may be due to my nikon d7100 body but focus is spot on any time. Only my first version of the canon 70-200 2.8 II L had better Sharpness and color. With their deeper DOF (Depth of Field) with identical framing, APS-C camera bodies will not show the focus errors as readily as full frame bodies. The 70-300 VC will show some flare if a bright light is in the frame, but the amount of flare is not unusual.

With superior optical performance, Tamron’s own USD (Ultrasonic Silent Drive) and VC (Vibration Compensation), the SP 70-300mm F4-5.6 Di VC USD (Model A005) provides the performance of a high-end premium telephoto zoom that is appealing to a broad spectrum of photography enthusiasts. SP 70-300mm F4-5.6 Di VC USD」(Model A005)は待望のレンズだ。35mmフルサイズ対応のズームレンズで、マウントはキヤノン、ソニー、ニコン用を用意。ニコン用は26日に発売する（キヤノン用とソニー用も順次発売の予定）。今回の撮影にはニコン「D700」を使用した。 Pincushion distortion increases over the focal length range until becoming moderately strong at 300mm.With a full-frame digital or 35mm SLR, portrait and medium telephoto shots can be achieved on the wider 70mm end of the range and spectacular telephoto shots at the longer 300mm side. When using an ASP-C sensor camera the angle of view changes, giving it the equivalent range of 109-465mm for bold ultra-telephoto shots. And with a maximum magnification ratio 1:4, the lens can be used to explore in the realm of semi-macro photography. The Tamron has modestly less flare, less barrel distortion at 70mm and modestly less pincushion distortion at 300mm. I tested the Tamron SP 70-300MM F/4-5.6 Di VC USD against a Canon EF 70-300/4-5.6 IS USM using an EOS 7D DSLR, which currently has the highest native sensor resolution of any Canon DSLR (and in fact of any DSLR). With 18MP in an APS-C frame the theoretical resolution limit at the sensor is 116 lp/mm (neglecting any blurring as a result of the low pass filter over the sensor). I also used an EOS 5D to look at the image quality at the edges and corners of the full 35mm frame. D700 / SP 70-300mm F4-5.6 Di VC USD / 2,832×4,256 / 1/2,000秒 / F6.3 / -1EV / ISO200 / 絞り優先AE / WB:晴天 / 70mm D700 / SP 70-300mm F4-5.6 Di VC USD / 4,256×2,832 / 1/60秒 / F5 / +0.7EV / ISO200 / 絞り優先AE / WB:雲天 / 185mm

Doesn't feel special like the L lens either, but of course not much does and it would be cruel to expect a 300GBP lens to do so Press Release: Tamron Announces release of a full size premium telephoto zoom – the Tamron Superior Performance SP 70-300mm Di VC USD (Model A005) for Nikon mount We spent 2 hours in the store making detailed comparisons using my MacBook (with 2 other guys in the shop offering very valued, experienced but un-biased opinion) including making crops of each image. On all settings, the Tamron edged out the Canon 70-300 fairly easily, and the Canon was excellent to start with! Against the 70-200 F4L, the Tamron loses slightly when wide open, but once stopped down to F5.6/8 the differences were extremely hard to find, with the Tamron only losing marginally at the corners. In several of the images I took, we really couldn't tell any difference between the Tamron and the Canon L - it even came to the point that we couldn't remember which images were from which lens, they were that close. Anche se si comporta bene in molte situazioni, e conosco più di un professionista che lo utilizza, certamente non è indicato per un uso professionale completo.Much more problematic is the inconsistent focus accuracy I'm experiencing from the Tamron 70-300 VC. The SP 70-300mm F/4-5.6 Di VC USD is the first to boast Tamron's new USD (Ultrasonic Silent Drive).

D700 / SP 70-300mm F4-5.6 Di VC USD / 4,256×2,832 / 1/500秒 / F6.3 / 0EV / ISO200 / 絞り優先AE / WB:晴天 / 116mm In generale, oltre i 200 mm le prestazioni del Tamron 70-300 diminuiscono con una curva assai ripida, fino a presentare difetti davvero evidenti alla focale massima di 300 mm. La mia opinione finale This lens’ advanced optical design employs a sophisticated XLD (Extra Low Dispersion) lens element made from specialized high-grade glass that has lower dispersive properties than standard LD lenses (where refraction causes the dispersion of white light into spectral hues). The dispersive properties of the XLD lens are at a level similar to fluorite, and in combination with LD elements make for an optimal optical design that delivers best in class resolution with advanced axial chromatic and magnification aberration correction - major inhibitors of image quality enhancement. The result is a lens that delivers sharp contrast and better descriptive performance throughout the entire zoom range. In the pursuit to achieve the most outstanding image resolution in the 70-300mm class, Tamron’s Anniversary lens - the SP AF70-300mm F4-5.6 Di VC USD (Model A005) - utilizes an advanced optical design that features a LD (Low Dispersion) and an XLD (Extra Low Dispersion) lens element made from specialized materials that prevent chromatic aberration. As a result, the SP AF70-300mm F4-5.6 Di VC USD (Model A005) boasts sharper contrast and greater descriptive performance than all others in its class.

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The other standout feature is Tamron's Vibration Correction (VC) system - an optical stabiliser that offers 4-stop performance in fending off camera-shake.

Here is a comparison of the aperture step down between the Tamron and some Canon telephoto lens models. There is also the risk of a problem that results in the lens and body manufacturers directing blame at each other. The Tamron 18-200mm f/3.5-6.3 XR Di II Lens and the Sigma 30mm f/1.4 EX DC HSM Lens are the only non-Nikon lensesThe 70-300mm ƒ/4-5.6 VC USD stops down to quite small apertures, in this case, ƒ/32-ƒ/45, all of which will provide quite soft images, with the exception of ƒ/32 at 70mm, which provides only slightly soft images.