"It is extremely sharp and is definatly wide enough. This is a true wide angle lens." bhphotovideo.com
"This has become a lens I must have with me. Use it appropriately and it is sharp with minimal to no vignetting." bhphotovideo.com
"The lens is great, especially If you like taking interior shots or panoramic, architectural buildings, architectural models." bhphotovideo.com
"I have yet to really put this lens through its paces, but so far I am very satisfied." bhphotovideo.com