A:AnswerI buy only 32 GB Sandisk SDHC cards. You can check the memory left by clicking on whatever outlet you use on your computer to read the card, and then click on properties. It will tell you how much memory is used. I download my cards regularly to a 2T external hard drive and reformat the card regularly to "clean out the cobwebs."
A:AnswerIt depends on the file size. For a 32 GB card, I normally get around 1700 from my Nikon D750. The file sizes range from 14 to 20 MB per photo. Your camera manual should be able to give you a more specific answer to your question.
A:AnswerNo, the SanDisk® SDHC Ultra Plus 32GB Memory Card is not compatible with the JVC GR-DVL820. Please contact to the host device manufacturer to the supported storage device.
A:AnswerHere's the Sony link, it has a chart for model vs memory card.
https://www.sony.com/electronics/support/articles/S1F0590
Hopefully this will help you.