MikePhotoFiddler wrote:
How do you know if there is information on your SD card by just using your nikon d7100? This is if you are on the road and not wanting to erase pictures or videos. I shot the videos or pictures with other sources and don't want to format the cards before I know they have info that I already saved on my pc.
If you don't have a card reader such as in most lap tops with you, your photo counter in your camera will let you know how many available photos you can take. You should know what an empty card capacity is in whatever format you shoot. If it's less than that, you have data on the card. You should be able to see both photos and video on playback unless it's in some format your camera can't read.