Sony’s SAL-1118 DT 11-18mm ƒ/4.5-5.6 zoom is for use with the Sony Alpha system’s APS-sized sensor—for which it produces an equivalent zoom range of 16.5-27mm. Affordable and compact, the lens is designed to focus quickly and accurately for wide-angle photography in confined spaces. Note that the lens is designed for the Alpha system, and while it’s compatible with the full-frame Sony DSLR-A900, the smaller image circle produces a smaller file size due to the resulting crop factor. Estimated Street Price: $700.
The fast SAL-20F28 20mm ƒ/2.8 prime lens from Sony works with both full-frame and APS sensors, although, on the latter, it doesn’t remain ultrawide (becoming the equivalent of a 30mm wide-angle on the smaller sensor format). The 94-degree angle of view can be focused from 10 inches to infinity, with deep depth of field, making near/far compositions easier to achieve. The lens accepts 72mm filters on the front element. Estimated Street Price: $600.
Tamron makes the SP AF10-24mm F/3.5-4.5 Di II LD, an aspherical, internal-focusing zoom lens constructed for use with smaller-format Canon, Nikon, Pentax and Sony DSLRs. Producing an impressive 108-degree angle of view, the lens delivers an equivalent focal range of 16mm at the ultrawide end to 37mm zoomed all the way in. This lens is a versatile tool for a variety of photographic styles—and at an affordable price. Estimated Street Price: $500.
The new AT-X 116 PRO DX 11-16mm ƒ/2.8 AF zoom from Tokina produces an equivalent zoom range of 17.6-25.6mm when used on an APS-C-sized DSLR. Available in Canon and Nikon mounts, the 11-16mm focal length has a slightly shortened zoom range to help maintain optical quality across the spectrum. Especially impressive is the fast ƒ/2.8 maximum aperture that remains constant no matter the focal length at which the lens is used. The One-touch Focus Clutch Mechanism allows efficient switching from manual focusing to autofocusing. Estimated Street Price: $600.
(800) OK-CANON, www.usa.canon.com
(800) NIKON-US, www.nikonusa.com
(888) 553-4448, www.olympusamerica.com
(800) 211-PANA, www.panasonic.com
(800) 877-0155, www.pentaximaging.com
(800) 896-6858, www.sigmaphoto.com
(877) 865-SONY, www.sonystyle.com
(631) 858-8400, www.tamron.com
Tokina (THK Photo)
(800) 421-1141, www.thkphoto.com