Best budget-friendly memory cards for the Canon EOS R6?

Question

Does anyone know what the absolute cheapest SD cards are that actually work reliably in the Canon R6 without making the buffer hang for like ten minutes? I just spent way too much on the body itself and now Im staring at these card prices and crying a little bit lol. I really need to figure this out by next weekend because I have an engagement shoot booked here in Chicago and I realized I only have one old 32GB card from my T6i which obviously isnt gonna cut it.

Ive been doing some digging and I saw a lot of people recommending the SanDisk Extreme Pro cards because they are basically the industry standard but then I saw some threads saying you HAVE to use UHS-II cards if you want to do any kind of burst shooting or 4K video. But man those V60 and V90 cards are so expensive it is actually insane. I saw the Lexar Professional 1667x which is way cheaper for a UHS-II card but then I saw a bunch of reviews saying the casing is cheap and they fall apart in the camera which sounds like a total disaster.

I also read that the R6 has two slots so maybe I can get away with one fast card and one slow one? I read that some cameras will slow down to the speed of the slowest card if you are recording to both at the same time for backup which is what I want to do. If I buy a Kingston Canvas React Plus because people say its the best value V90 card will it even matter if my second card is just a cheap V30?

My budget is really tight right now like maybe $100 total for two 128GB cards if thats even realistic. I mostly do stills but I use the electronic shutter for high speed stuff sometimes. Does the buffer fill up instantly if I use a regular UHS-I card or is that just for people shooting 4K 60fps video all day? Just trying to find that sweet spot where I dont lose shots but also dont have to sell a kidney just for storage...

BitTrailblazer · Accepted Answer

In my experience over the years, you dont actually need V90s unless youre doing heavy video. Honestly, I've always found SanDisk Extreme Pro 128GB SDXC UHS-I V30 to be the safest bet for budget builds. Theyre super reliable for stills. If you really want UHS-II speed, look at ProGrade Digital SDXC UHS-II V60 Gold 128GB. Its better built than Lexar and fits your budget way better than V90s.

PixelParagon · Answer

> I read that some cameras will slow down to the speed of the slowest card if you are recording to both at the same time for backup... Be careful because the R6 definitely bottlenecks to the slowest card during dual recording. If you mix speeds, you'll basically lose the UHS-II advantage. I would suggest looking at Sabrent Rocket V60 128GB SDXC UHS-II. They have great sustained write speeds and are priced much better than Sony. Make sure to test them thoroughly before your Chicago shoot tho.

Sightifh · Answer

> I read that some cameras will slow down to the speed of the slowest card if you are recording to both at the same time for backup... @Reply #3 - good point! Honestly, for an engagement shoot, reliability matters way more than hitting 20fps. If you mix speeds, the R6 definitely chokes down to the slower card. Since you need two 128GB cards for $100, your options are basically high-end UHS-I or entry-level UHS-II. I'd skip the Lexar 1667x because the build quality is actually pretty sketchy like you heard. Look at Kingston Canvas Go! Plus 128GB SDXC UHS-I V30. They are incredibly stable and cheap enough that you can buy three for backup. The buffer will take a second to clear if you spray and pray, but they dont fail. If you really want UHS-II, Angelbird AV PRO SD MK2 V60 128GB is a decent option. They usually go for about $50 each if you find a sale. They are built like tanks and designed for sustained writes. Personally, I'd just get two of the Kingstons and call it a day. Stills usually dont need V60 speeds unless you are shooting sports all day long.