Memory card write speed
Posted 14/08/2012 - 07:52 - Helpful Comment
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I think shooting RAW + JPEG may be causing a bigger difference than card write speeds. As as experiment just shoot JPEG and see what happens
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
Posted 14/08/2012 - 07:58 - Helpful Comment
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This is a quote from the test I did for EPZ:
Edit: the test was performed using a standard SanDisk 4GB SD card, nothing super fast or special about it.
Quote:
The manual claims a continuous burst at 6fps in JPEG can be maintained for 25 frames. My own test suggests that this is a conservative estimate and I found that the frame rate only dropped from maximum after approximately 28 frames.
Other factors will be, as Ken says, if you shoot RAW and also the shutter speed used. Slower shutter speeds will dictate lower frame rates.The manual claims a continuous burst at 6fps in JPEG can be maintained for 25 frames. My own test suggests that this is a conservative estimate and I found that the frame rate only dropped from maximum after approximately 28 frames.
Edit: the test was performed using a standard SanDisk 4GB SD card, nothing super fast or special about it.
Best regards, John
Posted 14/08/2012 - 09:51
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As you have surmised, the bottle neck (if you can call it that) is the camera. However, a faster card will definitely be quicker to pull images off (assuming you're using a card reader )
(I use the Samsung Extreme SD cards which are more rugged than anything else I've used and are class 10)
The buffering works by storing the images in the camera's SDRAM (which is the fastest area for the camera) and then at some point it has to stop and flush this information to SD-card, and that process is relatively time consuming. Of course, if you shoot JPG only, the camera's SDRAM can fit in more images
Matt
(I use the Samsung Extreme SD cards which are more rugged than anything else I've used and are class 10)
The buffering works by storing the images in the camera's SDRAM (which is the fastest area for the camera) and then at some point it has to stop and flush this information to SD-card, and that process is relatively time consuming. Of course, if you shoot JPG only, the camera's SDRAM can fit in more images
Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)
(For gallery, tips and links)
Posted 14/08/2012 - 14:12
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Do you have catch in focus enabled???
PPG Wedding photography Flickr
Concert photography
Currently on a Pentax hiatus until an FF Pentax is released
Concert photography
Currently on a Pentax hiatus until an FF Pentax is released
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