Expensive zooms that reach this focal length easily will match the image quality of the AT-X 17mm or any other single-focal-length lens. However, there's a price to pay for them—they can be three or more times the cost, plus they're much bigger lenses, both in height and width as well as weight.
I'd have no problems recommending this lens to anyone who needs a super-wide-angle for 35mm or a strong wide-angle for a small-format digital SLR (e.g., for a 1.5x magnification factor, the lens is the equivalent of a 25mm). The lens is rugged and well built, and includes a quick-change ring for switching from auto to manual focus. Filters are 77mm, and the front of the lens doesn't rotate for focus.
Contact: THK Photo Products, Inc., (800) 421-1141, www.thkphoto.com.
[ Primary Features ]
|1 Ideal wide-angle for small-format digital SLRs because of price and quality 2 Sharper and with fewer lens distortions compared to lower-priced zooms with this focal length 3 Internal focusing—front of the lens doesn't rotate|