A yellow filter is a type of filter used in photography that is designed to selectively block certain wavelengths of light. When light passes through the filter, it is absorbed by a material that is specifically chosen to absorb all wavelengths of light except for yellow. This means that the filter appears yellow when viewed directly, but when placed in front of a camera lens, it blocks blue light and allows only yellow light to pass through.
Example:
The yellow filter is commonly used with black and white film to increase the contrast and tonal separation between blue and yellow/white objects in the resulting image. By blocking blue light, the filter darkens blue areas of the image and lightens yellow/white areas, creating a greater difference in brightness and improving the overall tonal range.
In addition to black and white photography, yellow filters can also be used in infrared photography to achieve a similar effect. However, in this case, the filter is used to block most of the visible light and allow only infrared light to pass through, creating a unique and distinctive effect in the resulting image.
Builds contrast in B&W images
Haze is eliminated for aerial photography
Absorbs blue colors
Example:
A yellow filter is often used in black and white photography to capture scenes that include a cloud-filled sky. By filtering out the blue colors, the clouds appear brighter and more vibrant while the blue portions become darker. This contrast can create a dramatic and visually striking effect. In aerial photography, a yellow filter is used to reduce the impact of haze, while in astrophotography, it helps to remove excessive blue light.
Final:
Tiffen 58mm 8 Filter (Yellow)
https://www.amazon.com/Tiffen-58mm-8-Filter-Yellow/dp/B00004ZCD6?th=1