Originally posted 2008-08-18 on Optyczne.pl A 300 mm focal length and f/2.8 aperture model is one of the classic journalistic lenses, ideal for sport or nature photos. Although its front element is almost 11 centimeters in diameter, its dimensions still make it possible to put it into a backpack and...

autofocus could have been more accurate; significant decrease of the image quality after attaching the converter

A little over a month ago I bought a Sigma 300 mm f/2.8 EX DG IF HSM APO telephoto lens for my 7D Canon camera at Amazon.com. When I received the parcel the first thing I noticed was that the vulnerable lens was rapped in three (3!

The lens works great! Its very fast, quick to focus and feels solid. So far its worked very well.

Probably the best lens i have ever used. Sharp at f2.8, and even sharp at f4 with a 1.4 x TC, with the sigma 2x you only need to stop down 2/3 to f7.1 to get exceptable images. The bokeh is creamy smooth, the contrast is good and the colour rendition has none of the old sigma yellow cast.

Very Very sharp; great colour; fast AF; "cheap

Not weather sealed

heavy, but a great lens once you get used to it, have taken several fast jet shots with this lens, having no VR or OS i was concerned about this area, but have been proved wrong, its a great lens.

Using Nikon gear almost exclusively, I worried about the optics of the Sigma. It didn't take long before I was very pleasantly surprised. The lens has super fast focus, super quiet motor (which will help with wildlife photos) and is compact.

excellent,i use it for wildlife and astro, i wanted a fast lens, and the price, falls nicely in between, nikons own lenses,the cost is expensive for one stop faster,i'am going to add, tele-extenders ,at some point .

In looking for a cost effective, high quality lens for wildlife & sports, I settled on the Sigma. While not perhaps quite the overall glass quality of a comparable Nikon lens, the cost difference more than makes up for it.