Nearly all contemporary digital cameras are able of producing a huge amount of information (footage) in no time. This is also possible due to the UDMA standard (Ultra Direct Memory Access) that they maintain.
Translated by Maya Golemanova
Unfortunately, most of us, the amateur photographers, don’t pay due attention to this essential aspect of shooting. With cameras like Canon 7D and Canon EOS 1D Mark IV, the choice of a card is crucial when it comes to shooting actions in RAW files for a long time.
Just imagine: 8 or10 fps and files with size 33 MB each. That makes around 260 MB data transfer per second for 7D and over 300 MB for 1D Mark IV.
I actively used the well known brand SanDisk years ago but since acquiring their new faster cards nearly made me bankrupt, 2 years ago I started using other brands which offered cards with the same speed but twice cheaper – Transcend.
For nearly 2 years (since I started using them) the Transcend cards have proved to be as effective as SanDisk. The decisive tests were for duration at extremely low, as well as at very high temperatures. They’ve never misfired. A lot of my friends bought the same cards and they are pretty satisfied with them too.
As to their fast performance, the tests were done in the following way:
If done this way, the test will most probably show higher productivity than use in a real situation since the saved RAW files will be absolutely black and thus smaller in size. But still what matters is the relevance between the results of cards from different brands.
Apart from SanDisk and Transcend, I have also tested other cards and I will soon publish the results in this article. But before giving you the specific numbers I’d like to mention that the card I am most satisfied with so far is Transcend CF 600x UDMA 16 GB, which surprisingly turned out to be even faster than Transcend CF 600x UDMA 8 GB which has low capacity.
Tests with Canon EOS 7D:
Tests with Canon 5D Mark III:
Tests with Nikon D800:
Tests with Nikon D300:
Price of CF cards in BHPhoto:
Transcend 8GB 600X – 56 USD
Transcend 16GB 600X – 74 USD
SanDisk 16GB 400x 60MB/sec – 100 USD
Transcend 8GB 600X – 40 USD
Transcend 16GB 600X – 59 USD
SanDisk 16GB 400x 60MB/sec – 60 USD
Lexar 16 GB 1000x – 139 USD
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