I bought my first rMBP a week ago. I was able to upload PEF files from my Pentax K5, but am not able to upload them from my K5IIs. When I try and load them, it comes back saying that they are an unreadable file, so they won't be loaded. Or something like that. At the moment, I only have iPhoto - I haven't loaded the Pentax software, Elements or ACDSee. On my Windows laptop, I usually uploaded via ACDSee and had no problem at all. Is there a way to upload the files outside of iPhoto, if I don't have another photo software to choose from? I've changed the settings so that iPhoto isn't the default, but I also don't know how to redirect to a different folder. Thanks in advance for any advice!