White Balance options for canon eos 500d/kiss x3/t1i
Wednesday, August 5, 2009
White Balance Options The Canon T1i offers a full range of White Balance settings, including six presets, an Auto setting, and a Custom setting. The six presets include Daylight, Shade, Cloudy, Tungsten, Fluorescent, and Flash. The Custom setting bases color balance on a previous exposure, meaning you can snap an image of a white card and then base the color temperature on that image. There is no support for directly entering a color temperature in Kelvin though, a feature more commonly found on professional models. A White Balance bracketing option snaps only one image, but then writes three successive files from that single capture. Bracketing steps are from -/+ 3 stops in whole-stop increments. (Each stop corresponds to five mireds of a color conversion filter, for a total range of +/- 15 mireds. This corresponds to about a +/- 500K shift at a normal daylight color temperature of 5,500K.) The Canon T1i's WB Bracketing is set on the same grid as the White Balance correction control. Fairly sophisticated, the white balance correction tool lets you shift the color balance toward more or less green vs magenta or blue vs amber, using a +/-9 step grid format. You move a highlighted square through the grid to adjust the color balance, and bracketing adjustments spread the single square into a cluster of three. It's a slightly more advanced interface than I'm used to seeing on consumer digital cameras, but a useful one that greatly extends the camera's color corrective abilities.
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