I have 4 images taken of the same scene in low-light conditions with a DSLR. To reduce noise, I want to average all of the images to get a single output image.
If I import the 4 images as layers into a single work space, I can set the opacities of the layers as follows, from top to bottom:
image 4 (layer opacity: 25%)
image 3 (layer opacity: 33.33%)
image 2 (layer opacity: 50%)
image 1 (Background layer)
Is there a simpler way to do this? Isn't there an "Average" mode for layer blending?