SanDisk 64GB Extreme PRO Compact Flash Memory Card UDMA 7 Speed Up To 160MB/s - SDCFXPS-064G-X46

These cards have never let me down. They are fast and I've never had one fail. I usually swap between multiple cards just in case, but I've never had one fail.

It's a CF card. It works. What more is there to say?

Super fast! One of the best brands and fastest cards of this type.

Simply stated, I won't use any other brand of CF cards in my cameras.I'm sure some of the no-name cards have similar specs for a lower price, but I need to know for sure that my photos are reliably saved when I hit that button. I just want to focus on taking photos without thinking about the reliability or speed of my memory card.SanDisk has been the leader in memory cards since the early days of digital photography, so I know I can trust them.This particular card is an upgrade for me from an older, smaller, slower SanDisk card for my Canon 5D Mark II. I generally don't need that much space for taking stills, but when I shoot in RAW format, I've used as much as 50GB in a single event. The faster speed means I can shoot more shots in a row without waiting for the card to finish saving.

Fast processing and great capacity

I was having an issue with my Digital SLR camera, when I was rapidly shooting a bunch of photos at once, some of them were getting corrupted. Turns out as my camera can use both CF and SD, CF is MUCH faster. All CF cards are not the same. I did my research, and this on was reported to be the best once for my Canon 5D Mark III. I no longer get any corrupted image files when I am shooting in burst mode. Transfers to my laptop from the memory card are much faster too.

I received this card the other day and was curious how it would perform in my Canon 5D Mark III, so I tested it against some of my other high speed cards. Obviously you are paying a premium for the write speed, so I wanted to make sure I got what I paid for, so to speak. Here's what I came away with:Camera Settings-Canon 5D Mark III with battery grip - 2 fully charged batteries (grip doesn't matter)-Freshly in-camera formatted CF cards-ISO 100, 1/8000s, body cap (so f/0, manual focus)-ALO, High ISO NR, vignette removal, CA correction OFF-RAW-High Speed DriveNote: I realize that the body cap photos are all black and real photos will be larger and slow the camera more, but I think that this is the only way to have a 100% reproducible test.Test-Depress shutter fully until the camera slows-Wait for buffer write to finish-Press image review - look at # of images, subtracting the extra frame that indicated the buffer was fullResults-Sandisk 16GB (SDCFX-016G-A61) UDMA 60MB/s read/write speed rated: 19 frames-Lexar 32GB 1000x (LCF32GCTBNA1) UDMA7 - 150MB/s read / 95MB/s write speed rated: 23 frames-Sandisk 32GB Extreme Pro (SDCFXP-032G-X46) UDMA6, 90MB/s write speed rated: 25 frames-Sandisk 64GB Extreme Pro (SDCFXPS-064G-X46) 160MB/s read / 150MB/s write speed rated: 35 framesThe new card isn't quite a 50% boost over the previous generation, but it's close, and being able shoot at 6fp for at least 5 seconds straight in a 5DIII is excellent. I'm sure the 1DX, D4, and other cameras would also benefit from the card.

Bought 4 cards to use with Magic Lantern on 5D MK 3 for RAW video recording. 1 Card out of four couldn't be read or formatted, but the 3 others worked flawlessly with writing speeds near 101 mb/s and continuous shooting. The same thing happened to me 2 years ago with the 60mb/s ones, where one of the two couldn't be used. Luckily Amazon's return policy allowed me to return the faulty cards. These cards are a bit more expensive than the Lexar ones, but my experience with the Lexar cards is bad: I bought 2 cards and returned both as they both stopped working after one day of heave raw shooting. I used Sandisc for years now and these cards have prooved to be reliable to me. I would recommend buying more than one since I had two experiences with unusable cards. Those that worked, lasted me and were reliable, that's why I am giving 4 stars.