Review on 💯 Reliable Performance: SanDisk Extreme 64GB Compact Flash Memory Card (B00EZE6V50) by Edward Gordon

I used these in combination with some Lexar Professional SD cards in my Canon 5d MarkIII during a month long sea voyage. Luckily there weren't any problems on holiday, but I've found that CF cards > 32GB can have problems with FAT formatting or the format formatted by the manufacturer. Fortunately, the Canon camera had no problem reformatting cards after I naively formatted it in Windows 7.