Auto vs. a Preset
Auto White Balance is a guess made fresh for every shot, and the only way to learn when to trust it is to put it head-to-head with a preset you chose deliberately.
Find light that tends to fool cameras — a room lit by warm bulbs, deep blue shade, the orange wash of a sunset. Shoot it once on AWB, then again on the matching preset, keeping the framing identical. Sometimes Auto nails it and the two look the same; other times the preset is visibly truer, or Auto has "helpfully" neutralized a warm glow you actually wanted to keep.
Do this a few times in different light and you'll build an instinct for your own camera — when to leave it on Auto, and when to take the wheel.
Pick a scene with strongly-colored light — warm indoor bulbs, deep shade, a sunset. Shoot it once on Auto White Balance (AWB), then again on the matching preset (Tungsten, Shade, and so on), with the framing identical. Compare the color side by side.
You've done it once you can see the difference — the matched preset usually renders color truer, or keeps a warmth Auto tried to erase — and you've started to sense when Auto can be trusted. Place both, Auto and the preset, side by side. (No difference? Auto won this one — try a more strongly-colored light.)
The assignment
Shoot the same tricky-light scene twice — once on Auto white balance, once on the preset that matches the light — and compare which gets the color right.
Place your proof, unlock the next.
With a free account your shot lives on this assignment — you earn the XP, your streak grows, and the next technique opens.
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