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07-02-2010, 09:09 PM   #1
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K100D Processing-Transfer Time

I just came back from shooting some fireworks. I normally shoot raw but switched to highest quality jpeg thinking it would speed processing-transfer time. It took a long time to process-transfer images to my card. It seemed like 5 sec or more. After taking a picture everything would go dark for a few seconds and then the transfer light would come on. I could not take another picture until the transfer was complete. I missed a lot of shots. I was shooting shutter speeds of 8-14 sec. My batteries were reading low but the camera kept firing. My jpegs were ~1.7M.

Is shooting jpeg faster than raw? Could battery voltage have effected speed? Would a K-X be considerably faster?


07-03-2010, 01:30 AM   #2
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If you're doing that long of an exposure, the camera will always take a longer time to write the image and process it. What takes the longest is the in-camera NR and processing, rather than the writing. Therefore, it doesn't really matter if you shoot raw or jpg in this case. The k-x would probably be marginally faster, if at all.

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07-03-2010, 08:38 AM   #3
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What your're seeing is a special kind of noise reduction used for long exposures. It's normally called Dark frame Subtraction, but I think the K100D menu calls is "slow shutter speed NR" or something like that, and you should be able to turn it off - see your manual. it works by taking a second picture with the shutter closed for exactly as long a the original exposure. So a 10 second exposure takens 20 seconds. it's not "procesisng" during that time; it's just waiting. Warning - turning it off will result more noise.

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