SanDisk Ultra Compact Flash 4 GB UDMA7 Memory Card up to 25 MB/s

I have used, San Disk cards before for my Digital cameras. (Mainly: SD. for many years, and have always found them to be very reliable and trustworthy compared to the cheaper options tried!) I would always recommend the Ultra version, as you get faster speeds and most important: Reliable transfer of data and longevity of Insertions/Removals from card readers & cameras. (Obviously they have better Gold plated contacts, than the rivals) I have been using this 4GB. card for data transfers a lot lately, in a PCMCIA adaptor and with my other purchase; The excellent Integral CF card reader. And have after extensive use found both to be Totally reliable and Excellent value for money!I would like to mention, please take care when: Inserting the CF card, as it has 50 minute connection pins. (2x25) These can be easily damaged if "Forced" into place, especially at an angle. (Insert "Gently" and it will last for many years!)

I have used SanDisk memory exclusively for many years and have never had a failure. But I did recently lose two old, 4GB SanDisc Compact Flash cards. I was going to get like-for-like replacements, but in the many years I've had them, the price has fallen dramatically and the write speed increased significantly, so I bought a single 50mb/s, 16GB card, and it's great! I have an old Canon EOS 50D and this card holds in excess of 600 RAW files, writes quickly and has worked flawlessly. Highly recommended.

Says 50MB/s read speed on the card but I actually got 88 out of it... and writes at 42MB/s as well (SanDisk don't specify this on the packaging other than to say it is lower, but 42MB/s was more than I was expecting). All much speedier than my DSLR camera requires. Testing done using a USB3 card reader plugged into a PC running Chkflsh. A USB2 card reader connection will get lower speeds.It has passed a write and verify of data on the whole memory card, so this is a genuine fully functional card. I don't intend to give it a good hammering (100 write/erase cycles) to really test it out... mainly because I would rather get on using it in my camera!!

The older 30MB/s cards were pretty good for normal day to day use, not super fast but likely good enough for many users (ie not slow either) I have a few of those around and they are reliable and satisfactory in use.This newer SanDisk is updated to 50MB/s (but take note for read times only)Testing (raw files transfer from PC to card) in a USB 3.0 Card reader I got:Write: 27MB/sRead: 48MB/sSo that's in line with the makers specifications (this can vary depending on USB and card reader)The previous generation of Ultra CF cards were reading at about 29/30MB/s, write times were about 20MB/sA step up in speed (more so for the read times) In camera buffer clearing times were improved. It's not as fast as the extreme cards (60MB/s read and write) but still far from sluggish. Users with pro level bodies and doing lots of burst shooing will probaly go for the UDMA 7 Extreme PRO super fast cards. Write speed is now roughly in line with the older Extreme III 30MB/s (previous Ultra model before this was somewhat slower)For 90% of users this is fast enough. Take note though the 4GB version is only rated to 25MB/s. Most cameras (even older ones) can take at least 8GB, do check though to make sure. 8Gb or over is the one to go for.Good product, the long warranty adds confidence, not had to use it to date.

I bought this for playing / storage of music for my Mercedes, as the CD player was not functioning and there is no AUX input, just the PCMCIA port. I loaded on the music (which must be encoded or it will hang - use Audacity freeware). That was three and a half years ago. Since then I have updated the music every few months. It was very good value. Works well, Saved me $$$$ at the Mercedes service center

Absolutely top quality CF card! I use this in my old Nikon D200 and it hasn't missed a beat! The image buffer set up on RAW is about 5/6 photos but in JPEG I'm still yet to fill the buffer on it! It's also very fast tansfer from memory card to computer which is always good! Definitely buy if you are in need of a CF card!

It's a compact flash card and it works in my Canon 7D. I'm not noticing anything unusual - it's not super fast and it's not super slow.It's too early to tell how durable it is, but CF cards don't feel as fragile as SD cards. I'm not likely to take it out of the camera very often so I'm not worried about mechanical wear and tear.

I use this card in a Canon EOS 7D. The Ultra cards are not as fast as the Extreme range, but perfectly adequate for my use with this camera. 8fps shooting RAW and JPG and I can get a few decent bursts before the buffer fills. I tend to shoot portraits so that doesn't tend to be an issue. I have Sandisk cards for my other bodies and can't fault them. They are a fine and reliable brand and I'd recommend them to anybody and everybody.