Originally posted by SirTomster I have avoided getting Micro SD cards for my cameras. I am not sure why since they should perform the same as the larger cousins.
In terms of performance, all that matters is the class of the card (there are slight differences between brands but usually not too noticeable). If you have a MicroSD and regular SD of the same class/brand, then they should have the exact same performance.
I definitely use MicroSD cards in my cameras. If you buy a class 10 card then you get about 10MB/s write speeds. If you don't get class 10 speeds then you probably have a counterfeit (which are surprisingly common). Unless you are shooting 4k video or need your burst buffer to clear really fast, then you probably don't need to worry about getting high end SD cards.
Speed Class - SD Association
---------- Post added 07-16-18 at 06:20 PM ----------
I should elaborate that class 10 indicates the minimum guaranteed write speed. This number is important if you need burst buffer clearing speed or do video recording. Class 10 can handle 1080p video recording, if you do 4k then you need a higher class card. You also need to consider if your camera can even take advantage of higher write speeds, because the processor may only handle up to a certain speed.
Typically when you buy a card they also indicate "transfer speed", which is a vague way of saying the maximum read speed that the card can handle. I've never actually seen these speeds in the wild because your computer has limited bandwidth for file transfers. My class 10 card transfers to my computer at 35MB/s even though it is rated at 100MB/s (over usb 3.0 to 5200rpm HDD). The speed of your hard drive, USB port, card reader, and processor can all effect how fast the transfer is.
You probably fall into 3 categories:
Don't use burst mode or video: class 10 is plenty fast for you
Sports/Action/Wildlife (so you use burst mode a lot): consider a faster card if buffer clearing bothers you, but not required
4k video: class 10 won't cut it so you need a faster card