I own a D90 with a Nikon 50mm f/1.8 prime lens. However ever since buying my camera I am struggling to find a proper workflow to process RAW images on my Mac which does at least the following
- Adjust shadows and highlights.
- Adjust an image via its histogram.
- Adjust white balance.
- Adjust exposure.
- Crop a photo.
- Present a preview of how the photo may look like after printing.
- Apply EXIF tags.
- Apply watermarks.
So my question is what kind of workflow should I follow, if I were constrained to use only free software on my Mac?
Edit: Please also suggest a software or a set of software applications to use.
Edit: Flagged as a wiki question since there can't be correct or perfect answer.
Edit: Given the fact that a freeware will probably not be able to cut it, I have come to the conclusion that I will need to buy a low cost software for this. I am keen on using Lightroom but may have to settle with iPhoto.