1. A method comprising: by a computing device with a processor and memory, receiving an original image with a first plurality of pixels; determining a saturation value for each of the plurality of pixels by determining a difference between a highest color component value for each pixel and a lowest color component value for each pixel; based on a setting of an effect control, determining an effect level and a blending level for applying an effect; applying the effect at the effect level to the original image to generate a converted image, wherein applying the effect to the original image includes applying changes to the determined saturation values, based on the effect control; blending the converted image with the original image based on the blending level to create a blended image; causing storage of the blended image.