3 ms·

Yeah, 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 ago
    A 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 ago
    Red 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