On my recent trip to Bali, I decided to shoot all the RAW files using the DNG setting on the Pentax K5. I figured this would maximize compatibility and also allow me to view the files on Picasa on my netbook that I used as a back up drive while travelling.
When I got home and downloaded the photos onto my MacBookPro, I was dismayed to see that a lot of the night shots had a magenta cast. I opened the files in Photoshop CS3 and looked at them and they rendered correctly. However, iPhoto and Aperture had the magenta problem.
A quick Google search indicated that the RAW converter for Apple had this problem but that it was fixed in the latest update to Snow Leopard (10.6.7). Problem was I was still running Leopard (10.5.8) and there didn’t seem to be a fix for this in Leopard.
I bought Snow Leopard and installed it – took about an hour. Got all the latest software updates, and then opened iPhoto. After reprocessing a few of the RAW files that had this problem (ISO 400 and ISO 800 files), the files rendered correctly.
The following shows are two JPEGs, the first a straight convert from the previously processed RAW file, and the second, a JPEG after reprocessing the RAW file.