Can I open a pic in iPhoto and after using the edit functions such as saturation, contrast, lighten, and darken, save the correction to use on other pics later. Is it possible, I have one correction saved that adds saturation and makes the pic cooler and then maybe have another correction that makes the pic warmer with less contrast? I want to be able to have a few corrections saved and when I view a pic be able to add that particular correction with a touch of a button and not have to edit each individual pic , feature by feature. I have a souvenir photo shop and it has different scenes with different lighting at each scene so I want to be able to edit each picture with one touch when I'm showing a customer the pic. Hope this is a clear description. I currently use a PC and a program from a 10 year old Konica Minolta camera that allows me to play with saturation and colors and then save each correction for later use. Wanting to switch to mac for this but need to make sure it can do what I need. Thanks