If youre in
the midst of a transition from film to digital imaging, youll
soon discover that your trusty 24mm wide-angle isnt very
wide on your D-SLR. In fact, that all-encompassing 24mm now
acts like a 36mm normal lens! This, youre finding out,
is due to your image sensors smaller size in comparison
to 35mm. While this effect offers increased telephoto reach
on the long end, it causes trouble for users of wide-angle lenses.
Tamron offers a
handy solution for digital wide-angle work with its SP AF 17-35mm
/2.8-4 Di LD Aspherical (IF). Designed with the digital
photographer in mind, the lens has a 35mm-equivalent focal length
of about 26-53mm. (The exact figure depends on the size of your
particular cameras image sensor.) It nicely covers the
range your short lenses used to give you with film.
Working with the lens on a Nikon D100 in Yosemite Valley, Calif.,
the shorter focal lengths gave me a wide enough field to cover
the vast expanse after a clearing storm. With a twist of the
zoom ring and a flip of my tripods pan-tilt head, I was
able to execute a number of compositions quickly under changing
conditions. Stopping down the lens provided good image quality
along with the depth of field I needed.
The optic covers the full 35mm frame, so film shooters have
a 17mm ultra-wide at their disposal. With the lens mounted,
the view through a film cameras eyepiece is like sitting
in a Cinemascope movie, especially at 20mm and wider. The angle
of view exceeds 100 degrees, offering much potential for landscape
work. (You might want to double-check that you didnt include
your tripod in the bottom of your shot!)
My test lens worked perfectly with both my digital and film
Nikon bodies. The zoom and manual-focus rings operated smoothly.
Tamron makes the SP AF 17-35mm /2.8-4 Di in mounts for
Canon, Konica Minolta, Nikon and Pentax. List Price: $817.95.