A high-quality super-wide-angle at a moderate price
By Rob Sheppard
You can get the
focal length of the Tokina AT-X 17 AF Pro lens in a zoom, and
sometimes in a similar focal length, so why bother with a single
focal length? The answer has two parts: size and quality for
the price. The Tokina 17mm /3.5 lens lists for $810 and
has a street price of approximately $400. Zoom lenses that get
this wide and are close to this price usually arent as
sharp as the Tokina in the wider -stops (stopped down,
modern lenses of any major manufacturer at any price are quite
remarkable), dont control flare as well, and exhibit some
barrel distortion (bending of straight lines, such as horizons,
when near the edge of the frame). After shooting with the AT-X
Pro for a while, I found it consistently sharp throughout the
-stop range, with a high degree of flare control, and
straight lines stayed straight.
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, theres
a price to pay for themthey can be three or more times
the cost, plus theyre much bigger lenses, both in height
and width as well as weight.
Id 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 doesnt rotate for focus.