Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Must Leave Power On to Save Images

I've known and happily used SanDisk CF cards before, high quality, good price. This Ultra II card comes with some worries. Since CF doesn't write at 9MB/sec, it uses a "buffer" to write a small amount (like 4 megs) to an ultra-fast buffer, then the image is slowly transferred to the main card. And there's the problem.I lost every "last image" on my trip to Italy. When I powered on the camera, took say 5 pictures, it would record 4 and lose the last image. This is because I was turning the camera off after taking the 5th picture. I needed to leave the camera on another 20 seconds to be sure the memory card finished transfer of the images. So it's very fast, for a small burst of pictures, but LEAVE THE CAMERA ON. I did a lot of "that's cool!" pictures... you turn the camera on, take a picture, turn the camera off to save battery life. Mistake. Make sure you REVIEW the images (and not just the temporary image displayed after the picture is taken) before POWERING DOWN.