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Photoshop (and others, I'm sure) allow you to convert an image to black and white, but control how the colors going in contribute to the output. I wonder if tra
by dehrmann 4y ago
Photoshop (and others, I'm sure) allow you to convert an image to black and white, but control how the colors going in contribute to the output. I wonder if trained black and white photographers would be able to recognize when this was taken advantage of in non-obvious ways.
- Dave_Rosenthal 4y agoYeah, a dark sky in a B&W photo is one of the most obvious ones (red filter). The other one that jumps to mind is white/bright foliage (infrared filter).
- ginko 4y ago>Yeah, a dark sky in a B&W photo is one of the most obvious ones (red filter). I believe you usually use a yellow filter to boost sky contrast.
- cosarara 4y agoA red filter will cut out blue skylight further, but a yellow one gets you halfway there. It's hard to nail exposure across filters (since each cuts out a different amount of light), but here is an example: [1] with no filter: https://cosarara.me/images/hn/01_no_filter.jpg https://cosarara.me/images/hn/01_no_filter.jpg [2] with a red filter: https://cosarara.me/images/hn/02_red_filter.jpg https://cosarara.me/images/hn/02_red_filter.jpg [3] with a yellow filter: https://cosarara.me/images/hn/03_yellow_filter.jpg https://cosarara.me/images/hn/03_yellow_filter.jpg These are not real film, it's a digital camera in BW mode using real coloured filters in front of the lens. Unfortunately, no clouds today, but the white wall can serve as a replacement.
- lm28469 4y agoRed will definitely be better, unless the sky is purple. Filters darken their opposite on a color wheel: https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Colorwheel.svg/2048px-Colorwheel.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Co... Yellow is usually used for portraits