27/03/2026 5:06 pm
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What SD cards are you guys actually using for high-speed burst shooting on the Leica SL2 because I'm hitting a wall with buffer speeds? I finally picked up a used SL2 last week and man I am so pumped to get out there and shoot some real action with it. I'm heading to the Monterey Motorsports Reunion next month and I'm gonna be trackside for most of it so I need something that won't choke when I'm doing those 10fps or 20fps bursts. Right now I'm just using some old SanDisk cards I had lying around from my Sony days and the buffer takes forever to clear which is basically a nightmare when you're trying to catch a Porsche 917 flying past.
I've been looking at a few options but I'm totally torn between the Sony Tough G Series V90 cards and the SanDisk Extreme Pro V90s. The Sony ones seem bulletproof which is cool because I'm kinda clumsy sometimes but they're so expensive compared to everything else. Then there's the ProGrade Digital Cobalt cards which some people say are even faster in the SL2 specifically? I have a budget of about $300 to $350 for two 128GB cards and I really don't want to blow it all on the official Leica branded cards if they're just rebranded stuff anyway which is what I heard on some other thread.
Is the Tough build worth the extra cash or should I just go with the ProGrades and call it a day? I'm worried about the cards overheating too since I'll be out in the sun all day long at the track. I really don't want to miss a shot because of a Recording... message on the screen. Anyone here have experience with these specific cards in an SL2? Like does the buffer actually clear faster with one over the others or are we just splitting hairs at this point? I need to order them by Friday to make sure they arrive in time for a practice shoot I'm doing at a local autocross event...
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27/03/2026 5:20 pm
Honestly, you dont need to spend the Leica tax for decent performance. The SL2 has a massive buffer, but it can definitely choke if the write speed isnt consistent. Since you are on a budget for two cards, those Sony Toughs are gonna blow your whole $350 limit pretty fast. I have found that technical specs matter way more than the brand name when you are trackside for hours. Here are the ones I have used that actually keep up without breaking the bank:
- Kingston Canvas React Plus 128GB SDXC UHS-II V90
- These are basically the best value on the market right now. They usually come with a dedicated reader too. Very stable write speeds for those long 10fps bursts.
- ProGrade Digital SDXC UHS-II V90 128GB Gold
- The Gold series is slightly cheaper than their Cobalt line but still hits that V90 rating you need for the SL2 buffer to clear properly.
- Lexar Professional 2000x 128GB SDXC UHS-II
- These are super fast, though I have heard of some people having weird fitment issues with Lexar in Leica slots before, so maybe check that first. If you go with the Kingston ones, you could probably get three for the price of two Sonys. Heat is always a factor in direct sun at the track, but V90 cards are built for high data rates so they handle the thermals way better than the older V30 cards you were using. Just make sure the cards are rated for 250MB/s+ sustained write, not just the peak read speed they put in big letters on the front of the box.
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27/03/2026 5:30 pm
Honestly, I have spent way too much time staring at data sheets only to be let down in the field. Unfortunately, many of these cards just dont live up to the marketing when you are actually trackside. I had a nightmare scenario at a local rally event where my fast cards simply couldnt keep up with the SL2's massive raw files once the buffer filled. It is actually super disappointing how many brands claim 300MB/s but then drop to a crawl the second the controller gets a little warm in the sun. If you are trying to stay under that $350 mark for two cards, you should look into the Angelbird AV PRO SD MK2 V90 128GB. I switched to these after getting fed up with the price of the Sony stuff. I found some benchmarks on Alik Griffin's site—definitely check his Leica speed tests out—and the Angelbirds are incredibly consistent for the price. They are built for high-bitrate cinema use mostly, so they handle sustained writes without the thermal throttling I saw on my old SanDisk Extreme PRO SDXC UHS-II 128GB cards. Another resource to check is the Memory Card Speed Guide online. It really helped me realize that the ProGrade Digital SDXC UHS-II V90 128GB Cobalt cards are great but you're paying a massive premium for that label. For your Monterey trip, saving some cash on cards means more money for gas or gear. Just make sure both slots have the same speed cards, otherwise the slower one will just bottleneck the whole system anyway... which is a mistake I made way too many times before I knew better.
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27/03/2026 5:07 pm
I have spent quite a bit of time testing media for the SL2 and unfortunately, many high-end options simply dont live up to their marketing when that buffer fills up. I had some major reliability issues with the SanDisk Extreme PRO SDXC UHS-II V90 128GB recently where the plastic casing started delaminating after just a few months of heavy trackside use. Its frustrating to spend that much and have physical build quality fail you during a shoot. After testing several brands, here is my methodical take for your budget:
- ProGrade Digital SDXC UHS-II V90 Cobalt 128GB provides the most consistent write speeds I have seen in the SL2. These are the ones I trust for long bursts.
- Sony SF-G Tough Series UHS-II V90 128GB are incredibly durable, but the speed was not as good as expected given the price premium. Stick with the ProGrade Cobalt. In my experience, the SL2 handles their controller better, leading to faster buffer clearing during sustained shooting. I was really disappointed by how sluggish the SanDisk cards felt by comparison...
