I'm copying thousands slides (Scanner takes much too long) using a digital camera and slide projector. Of course the center is hot and the corners are dark. I want to take a picture without a slide, invert it and use it to correct only the brightness. (Non-linear) I don't want to add pixels or blend images. Is there anyway of burning the center and dodging the corers based on the negative no slide image.
Just overlaying the image and reducing the opacity is not sufficient.
Just overlaying the image and reducing the opacity is not sufficient.