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Photogs: CF card write speeds


For you photogs out there, I recently took advantage of a CF card deal at
Frys.com. My only disappointment was that write speed is only about 60X
(speed was not advertised ­ should have been a clue). So I decided to do an
informal test.

Using my 6.3 GB Canon EOS 10D set on RAW format mode and continuous shutter,
I inserted each kind of card that I have and fired off 10 shots. I recorded
time to finish writing the last file to the CF card. Here are my results
sorted by times:

Fastest:
Lexar 1GB 4x ­ 1 min 42 sec. (oldest card - cost $256 in 2002)
Transcend 1GB 80x ­ 1 min 45 sec.
Dane-Elec 1GB 1x ­ 1 min 56 sec.
Lexar Professional w/ Write Acceleration 2 GB 80X ­ 1 min 56 sec. (cost $80
in 2005)
Slowest:
SanDisk Ultra II 2 GB 60x? - 1 min 56 sec. (cost $37.95 in Nov 2006)

So, by my calculation, my new cheap 60x cards are only about 15 percent
slower than my fastest, which was listed as a 4x card! The obvious trend is
downward pricing pressure. The surprise was write speeds ­ minimal
difference from fastest to slowest. You could also deduce that the most
expensive cards are fastest and the cheapest are the slowest, but that may
not hold up in a larger sample.

I suppose a professional sports shooter or other high speed type of work
would call for more thorough testing, but any card will work for flower
photography. I thought you might enjoy my little test.

Happy shooting,
Larry 


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