In Lightroom 3, I have some presets (example: whoiswolf_herbst_licht) that seem to darken the edges of the photo. However, I can't figure out how they do this. There is nothing that shows up in the ...
Having an effect of round spot light on the picture, so in the middle it's lighter and close to corners darker — what is the name of this effect in photography? What is the technique for this in ...