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Thread: Memory card speed

  1. #1

    Default Memory card speed

    HI need so help

    I am using a EPL1

    thinking of getting higher speed card

    Any advise, necessary ? and what sort of speed
    ultra or extreme

  2. #2

    Default Re: Memory card speed

    Up to you. Why do you think you need a faster one?
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  3. #3
    Moderator Octarine's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by chanceux View Post
    Any advise, necessary ? and what sort of speed
    ultra or extreme
    You should read up about the transfer rate (expressed in MB/s) instead of using marketing terms of questionable meaning. Your camera manual tells you which cards are suitable in terms of form factor / type but also in terms of speed. Cards with higher speed rate won't help at all, the interface of the camera cannot deliver data any faster. Only when used with computers and respective readers you are able to use the card at higher transfer rates. But that's only for the purpose of downloading pictures.
    EOS

  4. #4

    Default Re: Memory card speed

    Got a question since this topic is on memory card speed. What happen before the data is recorded to the memory card? Where is it buffered?

    Cannot be internal memory since some camera don't even have internal memory so where could be?

  5. #5
    Moderator Octarine's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by KiichiroToyoda View Post
    Got a question since this topic is on memory card speed. What happen before the data is recorded to the memory card? Where is it buffered?
    Cannot be internal memory since some camera don't even have internal memory so where could be?
    Where do you get this idea from? Where would a camera otherwise process the images? Once the sensor has captured the image then jpg engine needs to read these data and write the output to somewhere before the image is complete. Only then the jpg file is written to memory card.
    Btw: check your manual, there is something mentioned like "buffer for continuous shooting". It's different for RAW and JPG ... any idea what that means?
    EOS

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    Member hotwork77's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by chanceux View Post
    HI need so help

    I am using a EPL1

    thinking of getting higher speed card

    Any advise, necessary ? and what sort of speed
    ultra or extreme
    If you're thinking of getting a higher speed card, go for Class 10 types. They are the fastest available.
    Dreamz is the Alternate Realty | Stand Up and Be Counted

  7. #7

    Default Re: Memory card speed

    Quote Originally Posted by Octarine View Post
    Where do you get this idea from? Where would a camera otherwise process the images? Once the sensor has captured the image then jpg engine needs to read these data and write the output to somewhere before the image is complete. Only then the jpg file is written to memory card.
    Btw: check your manual, there is something mentioned like "buffer for continuous shooting". It's different for RAW and JPG ... any idea what that means?
    What idea? Manual never mention on buffer at all. So u mean all's in the processor?

  8. #8

    Default Re: Memory card speed

    Fastest now , Lexar @ 90m/s but at a huge cost
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  9. #9
    Moderator Octarine's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by KiichiroToyoda View Post
    What idea? Manual never mention on buffer at all. So u mean all's in the processor?
    Just a few camera models, feel free to search for yours. The buffer is labeled as "Continuous shooting buffer" and the values are given in 'frames per second - fps'. That's the amount of data the camera can hold in internal buffer before the images are written to the memory card. Once the buffer is full (camera can shoot faster than writing to card) the camera will slow down the continuous shooting rate.
    Canon 60D: http://www.dpreview.com/previews/canoneos60d/
    Nikon D3100 http://www.dpreview.com/previews/Nikond3100/
    Sony A33 / A55: http://www.dpreview.com/reviews/sonyslta55/
    Sony NEX-3: http://www.dpreview.com/reviews/sonynex5nex3/page2.asp
    The processor itself will have its own memory where the image processing is done before it's pushed to the buffer.
    EOS

  10. #10

    Default Re: Memory card speed

    Quote Originally Posted by Octarine View Post
    Just a few camera models, feel free to search for yours. The buffer is labeled as "Continuous shooting buffer" and the values are given in 'frames per second - fps'. That's the amount of data the camera can hold in internal buffer before the images are written to the memory card. Once the buffer is full (camera can shoot faster than writing to card) the camera will slow down the continuous shooting rate.
    Canon 60D: http://www.dpreview.com/previews/canoneos60d/
    Nikon D3100 http://www.dpreview.com/previews/Nikond3100/
    Sony A33 / A55: http://www.dpreview.com/reviews/sonyslta55/
    Sony NEX-3: http://www.dpreview.com/reviews/sonynex5nex3/page2.asp
    The processor itself will have its own memory where the image processing is done before it's pushed to the buffer.
    Bingo this is the answer I was looking for. Coincidently, I'm also looking that the models you listed. Thanks!

  11. #11
    Moderator Octarine's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by KiichiroToyoda View Post
    Bingo this is the answer I was looking for. Coincidently, I'm also looking that the models you listed. Thanks!
    You're welcome I just picked randomly a few (most) recent reviews.
    EOS

  12. #12
    Member Jolex's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by Octarine View Post
    Just a few camera models, feel free to search for yours. The buffer is labeled as "Continuous shooting buffer" and the values are given in 'frames per second - fps'. That's the amount of data the camera can hold in internal buffer before the images are written to the memory card. Once the buffer is full (camera can shoot faster than writing to card) the camera will slow down the continuous shooting rate.
    Canon 60D: http://www.dpreview.com/previews/canoneos60d/
    Nikon D3100 http://www.dpreview.com/previews/Nikond3100/
    Sony A33 / A55: http://www.dpreview.com/reviews/sonyslta55/
    Sony NEX-3: http://www.dpreview.com/reviews/sonynex5nex3/page2.asp
    The processor itself will have its own memory where the image processing is done before it's pushed to the buffer.
    Yup.. Getting to know your camera would be nice.. I'm using a Sandisk Ultra and shooting in continuous RAW at times, my camera will 'IA' after about 9 shots.. As for jpeg, I feel that a class 4 card is good enough for me. To avoid going nuts, I only use 8GB cards (300 plus RAWs) just incase my card gets corrupted and it's light on my pocket as well..

  13. #13

    Default Re: Memory card speed

    woa
    ok let me digest a bit first

    thanks all

  14. #14
    Member Alan Chan's Avatar
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    Default Re: Memory card speed

    Quote Originally Posted by Octarine View Post
    Cards with higher speed rate won't help at all, the interface of the camera cannot deliver data any faster.
    i dun know about TS's camera, but there is a huge diff on my D90.

    i switched to Class10 30MB/s from the free Class4 5MB/s SanDisk SDHC card when i started taking in RAW.

    when viewing through the photo on my LCD, especially when viewing thumbnails of 9-12 photo on one page. its almost instant on Class10 while Class4 took 1-2sec each page. also during continuous shots, Class4 was like 2-3x slower than Class10, so i guess the bottleneck is not at the camera buffer.
    Nikon D700| 70-200mm f/2.8G VR2| 28-70mm f/2.8D| 85mm f/1.8G| 50mm f/1.8G| SB900/SB28| MB-D10

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