The key differences between Pro 2.5 and Photo Manager 2009 are:
With Pro 2.5, you have more advanced image editing controls, like the Light EQ and Advanced tab in Shadow/Highlights, and the Channel Mixer, with which you can create richer black & white images. This is important to professionals and advanced amateur photographers who want precise control over image adjustments.
Guides:
ACDSee hosted tutorials:
What is a RAW image?
Digital cameras have processors in them. This converts the image into a jpg so that it can be viewed on your computer.
Digital SLR (single lens reflex) cameras have the ability to take RAW images. This means that the processor isn't being used in the camera.
Remember when you took photos with a camera & got the negatives? They needed to send it through a processor to create prints.
Well, RAW images are like negatives. They need to be processed to achieve the jpg image. You can view the RAW images in both ACDSee 10 & Pro 2, but ACDSee Pro 2 allows you to process them & edit them. Other programs that are similar are Aperture, Lightshop, etc.
Why take RAW images?
There are a number of advantages:
Some of the disadvantages: