Lexar 1GB 80x with Canon Digital Rebel?

Discussion in 'Canon' started by Mark Panszky, Jul 9, 2004.

  1. Mark Panszky

    Mark Panszky Guest

    Anyone has any experience with the above CF card? Does the Canon Digital
    Rebel have the write speed that can take advantage of an 80x card? Will
    I see any difference over a 40x one?

    I am not a sports photographer and I don't really see the need to shoot
    even at 1 fps.

    Thanks,

    Mark
     
    Mark Panszky, Jul 9, 2004
    #1
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  2. Mark Panszky

    Jimmy Smith Guest

    I use the Lexar 40X with a 10D. Although the Canon cameras do not take
    advantage of the "write fast" technology, as far as I can tell, the speed of
    this card and reliability have been great.

    Jimmy
     
    Jimmy Smith, Jul 9, 2004
    #2
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  3. Its easy to detect a failure in a light bulb (it goes out) and easy to
    create automated test equipment to test it. All it takes is time and a
    large number of bulbs (to get meaningful results).

    It'd be possible to do the same thing for CF cards but it'd take quite
    a bit of time and the rapid changes in technology probably don't make
    it worthwhile. A year ago 40x cards were the fastest now its 80x. Next
    year it'll be 120x. By the time an MTBF figure was arrived at and
    published the product would be out of date.

    That said, it is possible to calculate a theoretical MTBF for the
    flash chip(s) used in CF cards. Some chip manufacturers publish this
    data, others don't. Lexar Media and others just may not choose to
    publish it.

    BTW I think many newer flash devices use the same trick as hard-drives
    in that if a fault is detected in a "sector" they'll mark it faulty
    and use a (previously) hidden sector as a replacement. Notice that the
    capacity of many flash cards is not an exact power of 2 yet the
    underlying chips do. Where'd the extra room go? They're held in
    reserve to replace faulty sectors.
     
    Stuart Middleton-White, Jul 9, 2004
    #3
  4. Mark Panszky

    bagal Guest

    Hi Mark

    With equipment as hi-specced and hi-priced as this it is reasonable (IMHO)
    for manufacturers to provide professionals with a MTF (mean time to failure)

    A mean time to failure is the or could be the read/writes expected from a
    card of this spec

    I mean, it can be calculated on humble light bulbs - there is no reason at
    al (IMHO) why it should not be supplied with digital media

    FWIW

    das B
     
    bagal, Jul 9, 2004
    #4
  5. Mark Panszky

    bagal Guest

    It is a good point Stuart for sure but given the diversity of memory chips
    on the go it is reasonable for vendoers - brand holders to supply MTF MTBF
    to prospective purchasers

    I am sure that the data are there - it is only a matter of industry-consumer
    standards being reached. Vague notions and obfuscation is really well not
    21st century good practice (IMHO)

    das B
     
    bagal, Jul 10, 2004
    #5
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