I am trying to duplicate this portrait mosaic -- inspiration courtesy of Mozilla's homepage -- for a company intranet footer. I'm a Photoshop neophyte (more adept with Illustrator) and don't know how to control for different source images and give them this same brightness? The process is more than simply changing the image mode and adjusting brightness/opacity. Is there some kind of adjustment layer? I can fiddle with precision but what would the general workflow be for something like this?
Thanks much, Grant