For photos only any of the quality V30 rated will do. That's true even for 4K video as far as I know, but maybe they can take advantage of the faster V60's. The ones I've settled on with probably a dozen of 'em are Lexar 1667x V60's in 32 and 64GB and only because the price and quality is so reasonable, not because the camera needs those speeds for my photography.
Early on I was going with those Canvas React and Sony Tough V90's, I have two of each, but in all honesty those are overkill just as they are for most current cameras, mirrorless or otherwise. Other than two 128GB cards everything I use is 32 and 64GB. You're not likely to fill up even the 32GB in a full-day of photography.
I would mention tho that the buffer does seem to clear a
tiny bit faster with the Sony Tough's, but not nearly enough to warrant the cost. On top of that I rarely have filled the buffer anyway with BiF or other fast action.
Last edited by gatorguy; 4 Days Ago at 12:31 PM.