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

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.

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.

Fast processing and great capacity

Great card I stepped up to this from 8GB 30 MB/s CF and 32GB 80MB/s sd cards (which seemed to have similar performance in use). Compared to those 2 cards this transformed both Canon 1d IV and my 5d mkIII. On the 1D IV I have not hit my buffer limit and it clears nearly instantly. Shooting motorsports this lets me hit every car I want to using high speed frame rate on the opening lap AND have time to review my images while I'm waiting for them to come around again. On the 5dIII I am more likely to hit the buffer (still a rare occasion), but it clears quickly, again giving me a chance to review images while waiting for the cars to come around again. With my old cards sometimes the buffer hadn't even cleared by the start of the second lap. If you shoot action (or video) This (or another cards of similar speed) is one of the best investments you can make - It can literally add new life to older gear!As for the capacity I do like not having to change cards frequently, although with such a fast card I have found myself taking more photos during a session, and there is always that "all your eggs in one basket" issue should the card get lost or camera stolen with a days shooting still in it.

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.

One of the cards stopped capturing but fortunately I had already transferred the files. Amazon made it easy to return the card and get a replacement which arrived the next day. It makes me nervous when cards get a formatting error but I always have extras on hand. In the past I’ve had only a couple of errors with this brand but was always able to transfer the files to my drive. I use these exclusively for video production.