SanDisk SDCFX4-4096 4GB Extreme IV CompactFlash Card by SanDisk
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Digital camera reviews of SanDisk SDCFX4-4096 4GB Extreme IV CompactFlash Card
Digital camera Review: Extremely fast upload speed
Summary: 5 Stars
This product met all my expectations and more. The fireware reader is necessary though. The reader increases read speed by at least 5 times. Amazing speed with this card.Digital camera Review: FAST... FASTER than Fast
Summary: 5 Stars
I love the 4GIG EXTREME IV. It is really fast, no waiting, always ready. I will buy more.
SanDisk 4 GB Extreme IV CompactFlash Card ( SDCFX4-4096-901 )
Digital camera Review: Fast Card but Worth the Extra Cost?
Summary: 4 Stars
I purchased this card in the hope that it would allow more shots to be taken in burst mode. I set up a Nikon D300 to shoot continuous mode, raw format, 12 bit depth, 1/500 second, f4 with auto ISO off, manual focus and made shots with Extreme IV, Extreme III 8 GB and Ultra II 4 GB cards. I made shots until the camera buffer filled and the shot rate paused. The Extreme IV allowed 19 shots, the Extreme III 18 and the Ultra II 16. I repeated the test 5 times with each card and got the same results. The only thing I found that affected the number of shots was file size. Dark subjects can be compressed more and as a consequence the buffer can hold more shots before the shot rate slows.
I used a SanDisk imagemate card reader to upload 200 shots to my computer from each of the cards. The Ultra II took 5 minutes 20 sec, the Extreme III took 4 minutes 5 seconds and the Extreme IV took 3 minutes 50 seconds. My card reader may not be fast enough to take full advantage of the Extreme IV read rate.
For me the additional one shot in continuous mode is not worth the price differential between Extreme III and IV. For ordinary shooting that doesn't involve continuous shooting in RAW mode, the Ultra II is good enough for me.
I have never had a problem with SanDisk cards the Extreme IV does come with recovery software. In my opinion it comes down to a question of whether or not the extra performance is worth the price differential.
Digital camera Review: Fast and Reliable
Summary: 5 Stars
This card is simply amazing. It can keep up with shooting continuous RAW images and combined with the SanDisk Firewire reader, loading it onto your computer is a snap. With 4GB, I took roughly 420 RAW images at 10 megapixel on my Xti. Of course that number will depend on what ISO you used and how many megapixel you have on your camera. I could not be any happier with this product. But a word of caution. Before I bought a brand new 4 GB Extreme IV card, I got one refurbished from amazon warehouse and it was defected. Amazon promptly accepted my return and refunded me accordingly. I advise just getting it brand new even though it's a little pricey. It's worth it.Digital camera Review: Fast and cost-effective
Summary: 5 Stars
Best bang for your buck as far as writing speed and memory are concerned,especially while the rebates last.