I have a Lexar 633X 64 GB, 95 MB/s card but am wondering if the newer faster cards will work in this camera?
In general, the faster cards will work, but unless your camera supports UHS-II cards running at V90 speed, you won't see any speed improvement using the faster cards. Even if the camera supports faster cards, there is a point where you won't see a speed improvement.
In general, there are 3 places where a camera that supports faster cards might see an improvement:
- If you are shooting in machine gun mode (i.e. Pro Capture or just having a high FPS) then having a faster card will mean you will have more images saved before the camera slows down.
- If you are shooting 4K/C4K video and you specify as much detail and smallest compression as possible.
- If your camera has a high speed USB connection, a faster card may mean uploads are faster. Similarly, if you use an external reader, and your computer's USB and card reader both run at higher speeds, the upload will be faster.
When I bought the E-m5 mark III, I did buy one Delkin 128GB UHS-II V90 card, and I moved that card to be the main card on the OM-1 when I bought it. I looked at the SanDisk Extreme Pro card, but I was already over budget, and I went with the cheaper Delkin. Generally, I've used UHS-I V30 cards in my cameras.
Recently, I saw a good deal on Delkin 128GB UHS-II V60 cards, and I picked up a few, and now have the main card in the E-m5 mark III and the secondary card in the OM-1 both be UHS-II V60 cards. However, since I typically don't shoot machine gun mode at high speeds, and I no longer do much video, I don't think I need the speed.