This is a full frame lens and I'm using it on a crop sensor body. I am very pleased with the image quality. Real life isn't tack sharp why should the images we capture be any different?

Inexpensive

Auto Focus noisy and sluggish

One of Tamron's Digitally Integrated (Di) lenses, the AF 70-300mm f/4-5.6 Di LD Macro is designed for use on both full-frame and APS-C-sized cameras. It's available in Canon, Nikon, Pentax and Sony fit and, on APS-C bodies, the effective zoom range is 105-450mm or, for Canon cameras, a slightly...

excellent quality tested by the pro's and matched the big ticket stuff, motorised focus works well. The price is well below 1/2 of some the online and retail traders. Lens is well balanced on the camera body.

Lens is value for money.... But there is chromatic aberrations in 300 mm....... Don't expect optical image stabilization in this price segment.

With this 70-300mm telephoto zoom lens, flipping a macro switch in the focal length range of 180mm to 300mm obtains a maximum magnification ratio of 1:2 at a minimum focus distance as short as 37.4", enabling close-up shots of flowers, insects, and other objects that normally require the use of a...

Because of the increasing popularity of digital SLR cameras, Tamron has been upgrading their line of lenses to the "Digitally integrated" (Di) standard, employing methods discussed in our Technology sidebar.

The Tamron is obviously a low budget lens - locally it sells for just ~130€ - it does hardly get any cheaper than this. However, it is amazing that Tamron didn't really sacrifice too much build quality.