Grayscalizer

Grayscalizer is a filter to give more control over the conversion between color image and grayscale images. It's simulating the presence of a "filter" in front of the lens. This filter defines some presets, which correspond to the most used "lens filters". And it's also possible to adjust the value of the filter, to either fine tune the results or to make artistic results.

Red filter

The Red (25A) filter is one of the most usefull filter to increase contrast of a grayscale image. Basically, the red filter, ignore green and blue values, and only use red to create the grayscale value.

Orange filter

This image was generated using the "orange filter".

Custom filters

This is an example of a completely useless use of the "Custom filter", on this image I use only the "Blue" channel, which is the worse idea to create a grayscale image, as you can see for your self on the image.