Hi Terry,
Yes, digitizing them with a camera is a clear option. The other thing you could do is use SilverFast that came with your Epson V750 in batch scan mode. You can deploy SilverFast's "Find Frames" tool to isolate the material that needs to be scanned and then scan them in batches as large as the number of those slides you can fit on the platen. I would test this using the Epson fluid mount assembly without actually removing the media from their mounts. You can buy this FMA from the Epson store for about 60 bucks. It is a glass platform that has the right displacement from the scanner bed for unmounted media. However, there may well be enough DOF in the scanner to accommodate the mount if it is thin. Give it a try, because if it works well, it's an efficient approach.