BEWARE - My Card was a FAKE!

BEWARE:

I bought a Sandisk Extreme IV from AMAZON and it would
not work properly and finally went dead completely.
I contacted Sandisk and they absolutely documented my card
as a FAKE, not an authentic Sandisk. I really expected
better than this from AMAZON! I guess I am stuck. Below
is the actual response from Sandisk.

Dear Mark,

Thank you for contacting Sandisk. We have received your email with photos. Unfortunately the photos show that the card is not an authentic Sandisk card.
Take card back to vendor and inform them of our decision.

Best regards,
Segundo
Rma dept.

WATCH OUT FOR THE FAKES! DUMB & DUMBER ON THE LOOSE

Well, I've seen some dumb things before, but when Amazon allows an afiliate vendor to sell counterfeit ExtremeIV 8GB cards, now that is dumb. Especially, since the vendor was brand new to them (obviously not vetted). I bought the card from these guys just to see if it was going to be fake or not. And sure enough as soon as I got it I called SanDisk and what do you know, counterfeit as a 3 dollar bill. About the only thing that could be dumber is for SanDisk not to find a solution for this problem and lose many potential customers because of the uncertainty. BTW These are really convincing fakes, including the high quality retail packaging, the software included, even a little zipper pouch that says SanDisk on it. Maybe it will be best not to buy expensive SanDisk for some time to come.

Great speed and capacity if you need it

Upgraded to this card from my Extreme III 4GB card as I started shooting with a new Canon body. The extra capacity and speed is valuable if you shoot a lot of RAW at high resolution and high speed, like sports. There's a noticeable difference between when I run out of buffer space with this card and its smaller/slower cousins.

On older cameras, make sure they can handle an 8GB card. Also, if you have a slow camera, it may not be able to take advantage of the extra speed, and an Extreme III for a lower price will perform just the same.

Of course, when you have such a large and fast card, make sure you have a reader that can keep up with it, or it will be a long wait at that end. I use the Extreme CF Firewire Reader and it downloads at 25MB/s once I figured out all the right connections (see my review for that product).

Need for speed and data

This card has thus far exceed my expectations. Write times are instant and frankly are ahead of most cameras abilities to even send the data. As mentioned in another review 500 pictures are no problem for a 12 MP Canon 5D. The true challenge for this card and one it was built for are larger data sending cameras like the Canon 1Ds Mark III (21 MP) I am just this week going to give it a test on this monster camera. I did not think this was possible this soon, but a 16 gig Extreme IV card might need to be created. Carry more than one of these cards just in case. The saying, "one is none, two is one"..... etcetera applies. Just when you need it most it will fail and you don't want to ruin your work, drop it in the water (or any other misadventure/techno failure), so carry at least two cards if you are using this grade card. I carry 3. If you use serious gear, be ready for serious anything.

Review of SanDisk 8GB Extreme IV

Purchased the SanDisk 8 GB Extreme IV for use with my new Nikon D300. It formatted quickly and pictures are written to it rapidly. It was out in cold weather and there were no problems. All-in-all I am very satisfied with it though in hindsight it would have made more sense to get two 4GB and spread the risk.

Images scrambled

I had a sporadic error with this card and I know other photographers who have had the same problem.
Although the preview image appears fine in the camera when you download the card to a computer the high res files are scrambled. I went back to using extreme iii 4gb cards which work well.

I couldnt ask for anything more.

I have used this card for several months, and have taken tens of thousands of images with it. I have not had a single problem on my 30D, that is not something I could say about Lexar cards. All of my Sandisk cards have served me very well, and I hope and expect them to continue to do so.

I get about 9MB/s using my PCMCIA reader on my laptop, which is decent. I would invest in the firewire reader to get the true potential transfer rate, but my laptop doesn't support firewire.

Dependable and Fast

We have a professional art & photography studio and we have been using SanDisk Extreme cards for years. They have never given us a problem, and we have even sent a couple through the washing machine or some similar situation. It is still fast at this point, but we will keep upgrading as with the same brand as we need to. I have tried a couple of less known brands (Lexar is good too), but we ran into enough trouble with less known brands that we didn't want to risk that anymore. If you are a pro (or take important photos), you need to be confident that you will come back with photos and no problems on your disc. You probably shouldn't buy the unknown brand unless you know your stuff very well, and know exactly who produced it and how they did it.

Wicked Fast!

This CompactFlash card had no trouble keeping up with my Olympus EVolt-510. With a capacity of approximately 3,000 pictures, it was nice not to have to worry about taking too many pictures before downloading.

Great Card for Underwater Pictures

We used the SanDisk 8 GB Extreme IV CompactFlash Card for all of the hundreds of underwater pictures that we took in Bonaire in August. The card was fast! I was able to take continuous action shots with my Sony F828 that I would have missed with my Memory Stick Pro.

Also, with 8 GB, we were able to fit two weeks of pictures on one card! We never had to worry about having enough room to fit that last great shot. We highly recommend this product.

excellent

Works fine with no problems in my Canon 400D. Not noticeably faster in this camera than the Sandisk "Extreme III" cards, but Extreme III is slightly faster than "Ultra II." Price per gigabyte is pleasingly low, and with RAW files at around 10 MB each it's a good balance between not changing memory cards constantly and avoiding the all eggs in one basket worries from putting everything on one huge card. I bought a second after verifying that there were no problems with the first I bought.

Just what I needed

I just bought a Nikon D200 and needed a lot of storage space for my work.
I always shoot Raw and this card is good enough for a wedding from start to end. Fast and reliable. Excellent price

Ulta fast card - worth the price.

For those who takes a lot of high resolution and action shots this card is a must - was able to take 100 action photos with out having my Rebel XTi suffer a momentary stoppage - In the older Ultra II 8 gig card this action would have force me to break off my shots when its memery buffer couldn't handle the data transfer and storage. Great card - I just purchase my second card for my 2 week trip to Arizona.

Dependable and fast

Excellent capacity. It provides me with enough memory to record 1535 high resolution shots in my Canon EOS 5D. I am not sure how fast it is in comparison to my ScanDisk 4 Gb Extreme III. Seems to be faster when I transfered 1 Gb using my Extreme USB 2.0 Reader. Adding the capacity of these two cards, I can take a 10 day summer vacation through Europe and leave my laptop computer home.

Cons: Expensive like hell, but if you wait until later in the summer the price can only go down. All of them become obsolete quickly. A much better deal is to buy the 4 Gb cards, but I wanted a biggy.

SanDisk 8 GB Extreme IV CompactFlash Card ( SDCFX4-8192-901 )

This card is very fast. I've owned several cards from SanDisk and have never had an issue with one. If you purchase this card for use in a camera, you will appreciate how quick the uploads can be.