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reason to use this is if you use a different trim value for your strobes than you do for sunlight.
Cloudy (cloud): Warmer (more orange) than the sunlight position. I use this in shade, too.
Shade (house casting a shadow): very warm (orange). Use this for sunset shots and deep
shade.
Preset (PRE): You use this setting with a white or gray card to get perfect color matching.
I use this in bizarre artificial light that I wish no make look natural, or to get exact color with my
studio strobes. An Expodisc makes this easier, but even without an Expodisc or white card I shoot
off anything neutral, like a piece of paper or a T shirt.
Any light weird enough to need this setting won't care about small inaccuracies in the neutral
reference. To set this:
1.) Ensure your card or other neutral object is in the light representative of the light on the subject.
2.) Select PRE via the menu button (or the Fn button (page 17) and spinning the dial).
3.) Press OK (or click to the right).
4.) Select Measure and click OK (or to the right). (The Use Photo option is a backwards bow to
Canon's convoluted setting method. Canon Jihadists used to brag about this. It does the same
thing, but requires twice as many steps. Ignore this option.)
5.) Select YES.
6.) Point your camera at the card or neutral colored thing and press the shutter.
7.) If the LCD says "data acquired or the viewfinder flashes "Gd," you're set. Shoot away!
8.) If the display flashes "unable to acquire" or the viewfinder flashes "no Gd" then repeat from
step 2.).
ISO Sensitivity
I usually set my ISO to 200 and let the D40's Auto ISO (page 30) adjust as needed.
Auto ISO makes all the ISO adjustments for you. I always use Auto ISO since it's as smart as I
am.
Firmware Defect #1: the Auto ISO (page 30) options are hidden in the Custom Settings Menu
(page 26), where I explain them in depth.
Firmware Defect #2: The Auto setting in this ISO menu refers instead to letting the D40 preset
the ISO as it guesses appropriate to the preset scene modes (sports, portrait, macro, etc.) as they
are selected. This Auto setting isn't Auto ISO, and it isn't available in the P, S A and M modes
(page 11) I use.
© 2007 KenRockwell.com 25 converted by Sándor Nagy