This post is a compilation of Sigma 300mm f/2.8 EX DG IF HSM APO Telephoto Lens for Canon SLR Cameras professional and user reviews, owner opinions, reports and experiences, tests, conclusions, ratings and feedback.
This should help in determining if the image quality of the Sigma 300/2.8 meets your expectations.
Full attribution is given by linking to the source and where available, the author’s homepage or photo gallery.
Note that the Sigma 300mm f/2.8 lens is also available for Nikon, Pentax / Samsung, Sigma and Sony / Minolta mounts.
Sigma 300mm f/2.8 EX DG HSM APO Tested at SLRGear.com
Andrew Alexander, the reviewer, tested the 300/2.8 on a Canon 20D and 50D, and wrote the following conclusion:
Our tests show the Sigma 300mm ƒ/2.8 to perform very well: sharpness is very good, CA is optimized for use at ƒ/2.8, there’s virtually no distortion and light falloff is almost non-existent. Optically, the lens stands well on its own. However, for lenses of this category, it’s not just about the optics; the Nikon and Canon offerings, for example, include image stabilization and multiple focus control options.So it’s hard not to recommend the lens: it’s solidly-built and performs well, especially for the price point
The equivalent lens offerings from Canon, Nikon and Sony are: