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Question RE: burst rate
Jun 18, 2012 18:34:04   #
watchwinder Loc: Churubusco, Indiana
 
Hope I can convey this question in a way all can follow, tried an experement today I set my camera (d3100) on burst mode, scanned a bright room, then a dimmly lit room; looing back at the pic,s history , the shutter was between 1/25 and 1/30 , f5 , ISO was the only thing that varied as I scanned the light and dark areas of each room (sunlit window and such). Are these paramiters set by the manufacture? Seems to me in a highly lit situation (i.e. snow pic's) it could be capable of more fps with faster shutter speeds if not governed by the program?

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Jun 18, 2012 22:41:13   #
birdpix Loc: South East Pennsylvania
 
watchwinder wrote:
Hope I can convey this question in a way all can follow, tried an experement today I set my camera (d3100) on burst mode, scanned a bright room, then a dimmly lit room; looing back at the pic,s history , the shutter was between 1/25 and 1/30 , f5 , ISO was the only thing that varied as I scanned the light and dark areas of each room (sunlit window and such). Are these paramiters set by the manufacture? Seems to me in a highly lit situation (i.e. snow pic's) it could be capable of more fps with faster shutter speeds if not governed by the program?
Hope I can convey this question in a way all can f... (show quote)


The burst rate is determined by the speed of the mechanical shutter and the ability to read from the sensor and write to the memory card. Shutter speed is somewhat irrelevant to the issue except you can not have a shutter speed longer than the interval between shots. Some cameras have dual and quadruple processors to increase the digital through put speed which allows a higher FPS.

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Jun 19, 2012 08:35:29   #
watchwinder Loc: Churubusco, Indiana
 
Thanks, pretty much answers my question. I luv this forum!, even feeble questions get answerd with care!

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Jun 20, 2012 04:52:22   #
Dun1 Loc: Atlanta, GA
 
The burst rate is dependent on the processor inside of your camera, the exposure settings of your camera, the read and write speed of the card on which you are storing your photos. If you buy the standard over the counter memory card that fits your camera you will not be able to achieve the maximum burst rate. If you purchase higher speed cards you will find that the higher speed cards not only improve the rate at which you can capture images, and also improve the rate at which you are able to transfer your images to your computer.

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Jun 20, 2012 08:24:25   #
birdpix Loc: South East Pennsylvania
 
A high speed card will not improve the burst rate. Cameras write to a buffer that can hold a specific number of photos of a certain resolution. This determines the number of continuous shots you can take before the camera slows down. At this point, a higher speed card helps because the camera can transfer data faster and free up room in the buffer so the camera can take more pictures. If you are shooting low res jpegs, your camera may never fill the buffer. If you are shooting high res RAW, you may only get 15 shots before the camera slows down. In the latter case, a high speed card improves the recovery speed after the buffer is full.

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Jun 20, 2012 13:31:01   #
watchwinder Loc: Churubusco, Indiana
 
See I not only got an answer to my question but a free education.......thanks guys

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