Features:

• 9 Groups, 13 Elements Lens Construction
• Rotation Type of Zooming
• 9 Diaphragm Blade Number
• F/32 Minimum Aperture
• 59 inch Minimum Focus Distance (1.5m) in normal setting, 37.4 inch (0.95m) in macro mode f=180mm-300mm range

Editor Reviews:

Product Description:
Tamron now offers a lightweight, compact, high-image-quality telephoto zoom lens with macro capability of 1: 2 that can be used with digital cameras. This new lens is a Di type lens using an optical system with improved multi-coating designed to function with digital SLR cameras as well as film cameras.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 specially designed macro lens. Moreover, this is a zoom lens that casually offers the distant capture and foreshortening effect pleasures of the 300mm ultra-telephoto world.

Rating : - My Rating: 4.3125 (I gave it 5 stars though)
Price: 5/5
(Great value for a 70-300 lens! BONUS: it comes with a free lens hood!)

Autofocus: 3.75/5
(It takes a while to automatically focus. You might have missed capturing a moment just because of the length of time it consumed for "auto-focusing" especially in dark conditions. The manual focus works fine though.)

Color: 4.5/5
(Outstanding color accuracy! Though some pictures look soft on 300mm.)

Handling: 4/5
(The autofocus and manual focus switch seems like it was going to break everytime you used it. Tamron needs to improve this! Furthermore, using the zoom at 270-300 seems like you are also about to break the lens. This needs to be improved too.)

Overall:

The lens is good for its value. If you're an aspiring photographer, this is probably a good lens to start with. But you can add more to your budget to invest in a lens with IS (Image Stabilizer), VC, (Vibration Compensation), etc. to improve your pictures.