Auto lighting optimizer
Long exposure noise reduction
High ISO speed noise reduction
Highlight tone priority
I did some test shots with these and I see no difference in the raw files. Do these only apply to the JPG format?
The 5D3 manual says on page 143 under the high ISO speed NR that playing back a RAW image with the camera the affect may look minimal. I'm not seeing it at all at 100% in Photoshop.
Diverhank has it mostly right. HTP will apply to the RAW. AutoLighting Optimizer will apply only if using Canon Digital Photo Pro software, otherwise Photoshop ignores it. Long Exposure Noise Reduction does apply to the RAW, while high ISO noise reduction done in camera will not apply unless using Digital Photo Pro.
Digital Photo Pro has the ability to take most of the Canon proprietary settings- like Auto Lighting Optimizer and High ISO Noise Reduction, and apply them to the RAW file, as if it was being done in camera to a jpeg a image. Programs such as Lightroom and Photoshop do not recognize those tags. My advice would be to install DPP and process the same file both in DPP and Photoshop. You should see a difference there.
I have DPP loaded on my computer but I always use PS or LR to process RAW files.
I can't argue about the price because Canon provides DPP free with the camera. But PS and/or LR offer way more adjustments than DPP whether they interpret Canon's tags or not.