I also use PS CS4 to crop and adjust stuff . all is fair game to me except color adjustments..
Actinic shots are tough, you gotta turn F stop WAY DOWN and also shutter speed, I use like F 4.0 and shutter speed 1/8 for the ones I took this morning
This one is F 3.2, iso 100, shutter speed 1/8 and the coral was one inch from the glass
Actually, actinic shots are not different from "regular" shots. They just take longer exposure times and you don't do any white balance adjustments. You don't need to open the aperture. You just need a good tripod and remote release or timer. This actinic shot was a 4-sec. exposure at f/29, ISO 400.
Gary