Review on High-Speed 512GB SD Card | Class 10 Flash Memory for Vloggers, Filmmakers & Photographers by Brad Russell

I photographed a soccer game tonight and took over 450 pictures but only 238 pictures were saved to the card. This has never happened before. Based on the research I've done, this is a map. Other images throughout the day cannot be played back. After I take a picture it shows up but if I take more pictures and go back they disappear.