Yesterday I did a shoot where I took both RAW and JPEG files. It's something I rarely do, but I needed to almost immediately review the images with the client.
I used a 1DSMk3 and recorded both RAW (CR2) and JPEG images onto a CF card. Yes, I know I could have recorded them onto separate cards, but I work with CFs exclusively. (I had one bad experience where I bent an SD trying to change it out while on a moving boat.)
While on site, I had no problems when I downloaded the images on my laptop. I set up two folders, one for RAW, the other for the JPEGs.
After taking what would have been an appropriate number of photos (in this case just over 250 on an 8GB card) card), the card was full. While on location, I reviewed the images on the camera and it showed it had recorded both a RAW and JPEG of each image.
What I didn't notice until later, until after I discovered this issue, was that the file size displayed was only for the JPEG.
When I came home, I set out to load the files onto my desktop. Not having a card reader, I plugged the camera directly into the computer by means of a USB cord. When I went to copy, what showed up on the screen were two files for each of the images, only they both were JPEGs. I'm pretty certain I haven't lost the RAW files, but I'm not sure now what I need to do to get them onto my laptop.
While it's not a fatal problem, as I can copy everything from my laptop, I'd still like to know why this occurs and how I can prevent it in the future.
I'm wondering wondering this issue might be because the operating system on the desktop is Windows XP, as I've haven't had the problem when I used my Windows 7 laptop.