08/04/2026 11:30 pm
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RF Mount Camera & Lens Forum
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Finally got my hands on a Canon R3 for a track meet Im shooting in Chicago next weekend. Im trying to figure out the best CFexpress Type B setup because the 30fps raw bursts are gonna eat through storage fast. I saw some guys online saying the ProGrade Cobalt is the only thing that wont throttle but then others swear the SanDisk Extreme Pro is fine for half the price. My budget is pretty tight after buying the body so I dont want to overspend if I dont have to. If I use a V90 SD card in the second slot for redundancy am I just gonna tank the buffer anyway? What are you guys actually using for high speed sports?
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08/04/2026 11:31 pm
I would suggest being very careful about using that second slot for redundancy. Even a fast Sony SF-G Tough Series V90 SD 128GB will likely bottleneck your R3 buffer. You might want to consider these for the main slot:
- ProGrade Digital CFexpress Type B Cobalt 325GB: Excellent sustained write speeds.
- SanDisk Extreme Pro CFexpress Type B 512GB: Good value but might throttle... Make sure to prioritize sustained performance or you wont get those 30fps bursts consistently.
