Sigma EF-530 DG ST Electronic Flash for Canon DSLR

Wouldyou like to broaden your world of photographic expression bymanipulating light in a simple way -. The EF-530 DG ST is aneasy-to-use flash that provides a large amount of light, featuring aguide number of up to 53/m w/ISO 100. Compatible with AF single-lensreflex cameras of all popular manufacturers, this flash unit allowsfully automatic photography with automatic TTL exposure control. Inaddition to the automatic mode, it also provides two power levels inmanual mode: full and 1/16 power. This electronic flash combines a widearray of functions with ease of handling and includes an Autozoomfunction that automatically sets the optimum illumination angle between24mm and 105mm, as well as offering bounce and swivel capability.

Autozoomfunction for changing the illumination angle
This function delivers flash light by automatically setting the optimumillumination angle, in accordance with the lens' focal length, in arange from 24 mm to 105 mm. When used with the built-in Wide Panel, theflash can cover the angle of up to 17-mm ultra wideangle lens.

Automatic TTL exposure control
Advanced photographic techniques, such as diffused lighting photographywith a diffuser attached to the flash head, or bounce photography withthe light pointed at the ceiling or wall to soften the shadows cast onthe subject without directly illuminating the subject with flash light,can be performed while the automatic exposure control function ispreserved.

Bounce flash function, with movable flash head
The flash head can be tilted up by up to 90 degrees , tothe left by 180 degrees , or to the right by 90 degrees . Bouncephotography, in which light is reflected off a white wall or theceiling o

Amazon.com Product Description
When there's insufficient or unsuitable light available to take a picture, it's of paramount importance to have a ready source of supplementary light to fulfill the need. That's where Sigma's EF-530 DG ST electronic flash comes into play. Designed exclusively for Canon digital SLR cameras, the flash offers a powerful guide number of 174 feet/53 meters and boasts the latest TTL automatic exposure system for easy operation. More significantly, the EF-530 DG ST is outfitted with a host of handy features, including an autozoom function that automatically sets the optimum illumination angle in accordance with the lens' focal length (with a range from 24mm to 105mm), a confirmation "ready" light that indicates when the flashgun is fully charged, and an auto power-off function that automatically shuts off the display to save battery power. And users will love the tilting flashgun head, which users can tilt up by 90 degrees, to the left by 180 degrees, to the right by 90 degrees, and down by 7 degrees, making it easy to perform a bounce flash. Plus, the flashgun features a manual flash mode in addition to the automatic mode, making it possible to set the flash power level to full or 1/16.

Features:

• Autozoom function that automatically sets optimum illumination angle
• Covers a focal length from 24mm to 105mm
• A built-in wide panel that covers the 17mm angle
• A tilting flashgun head for bounce flash (up by 90 degrees, to the left by 180 degrees, and to the right by 90 degrees)
• A down tilt angle of 7 degrees for close-up photography
• Runs on 4 AA alkaline or rechargeable ni-cad or NiMH batteries
• Measures 3 by 5.5 by 4.6 inches (W x H x D)
• Weighs 10.8 ounces
• 1-year warranty