I timed from when I first pressed the shutter to when the card access light stopped blinking. It took 52.9 seconds to download that same data set over USB the same speed as the SD cards took over USB. Out of curiosity, I couldn't find a USB CF reader around my desk, so I pulled a Nikon D3 out of my studio and read data from the hottest Extreme IV card. There are no professional FireWire readers for SD cards, probably because the little cards can't support a data rate that would make sense for FireWire anyway. CF cards can spew of data in huge massively parallel chunks, while all the bits have to wait in line to get on and off an SD card. The SanDisk MicroMate one-piece plug-in reader was about as fast.Ĭlearly the professional CF cards slam everything in SD cards.Īmong the reasons that little SD cards are so much slower is that they only have 9 electrical contacts, while CF cards have about fifty pins. I got the same speeds both connecting the hot SanDisk ImageMate Multi-Card Reader either directly into the back of my Mac, or through a USB hub. * Different day, different data set of 405MB as seen in OS 10.6, 390MB in Canon SD880. These times aren't that important, but since I need to copy the same data set to each card to test download speed, I may as well clock this. I tried a professional (Extreme IV) and a consumer (Extreme III) CF card for comparison, in my professional SanDisk Extreme IV reader connected via FireWire 800. Now that this data is on my hard drive, let's copy this off to each of several cards. So why again do people shoot digital? Didn't it used to be something about the speed? I don't get it. Heck, in an hour, I can drop my film at Price Club, go have lunch, and when I return, all my film is developed, everything is already backed up to CD, and I've got full sets of prints, all in less than an hour. This means that a 32GB SD card would take an hour to copy into a computer. I also tried the same suck in my tiny SanDisk MicroMate one-piece plug-in reader, which took 47.6s. Initial raw suck from SanDisk 2GB Ultra II 15MB/s card: 45.2s. I also tested to see how fast each could be written to from a camera, however the camera I used, the LEICA M9, takes more time perfecting each image (3 to 4 seconds each) than it does to write the data. I then clocked how long it took to download that data set back from each card onto my hard drive. I timed how long it took to copy this same data set from my hard drive back to each of several different SD cards, as well as onto some of my pro CF cards. I got curious, since I have a need for speed. Once I downloaded my card, I asked myself why it had to take a minute to suck in what should have come across in just seconds if I had shot it on a professional CF card instead of SD. I clocked how long it took to download this SD card into my Quad 2.5GHz G5 Mac (OS 10.4.11) with the hottest USB reader available today, the SanDisk ImageMate Multi-Card Reader. I had 207 files totaling 406.6MB (as read in OS 10.4.11 Get Info) in two folders shot with the LEICA M9, including JPGs of various sizes and some DNGs. (For comparisons of CF cards made with USB versus Firewire, see CF Card Speed Tests.) October 2009 Leica Reviews Canon Reviews Nikon Reviewsīuy from Adorama, Amazon, Ritz, B&H, Calumet and J&R.Īre faster SD cards any faster than slower, cheaper SD cards? It helps me keep adding to this site when you use these links to Adorama, Amazon, B&H and eBay to get your goodies. Intro Teknik Performance Analysis Recommendations High speed USB 2.Home Donate New Search Gallery How-To Books Links Workshops About Contact Easily transfer files between your digital devices and computer SanDisk microSDHC 6GB card ships with Bonus MicroMate™ USB 2.0 SD/SDHC Reader, to ensure compatibility when downloading pictures or other digital content Built to last, with an operating shock rating of 2,000Gs, equivalent to a ten-foot drop * High Quality microSDHC card backed by 5 year limited warranty Speed performance rating: Class 4 (based on SD 2.00 Specification) Optimal speed and performance for microSDHC compatible devices High storage capacity (6GB) for storing essential digital content such as high quality photos, videos, music and more Please ensure phone is SDHC compatible before purchasing this memory card. SDHC Class 4 speed and 5 years warranty.ĭesigned for new-generation mobile phones with support for SDHC cards. Free MicroMate SDHC Card reader includes in this retail package. With full-size SD adapter, turning this card in a SDHC card.
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