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07-12-2011, 05:46 AM   #31
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I've noticed no appreciable difference, other than total size, between my SDXC 64gb and my SDHC class 10 32 gb cards. And that goes for both still and video recording. Unless Pentax rewrites the firmware to support larger video file sizes, that is the only real advantage.

Both are significantly faster in writing burst sequences of still images from the buffer to the card than are the older, lower-class sd cards I have tried in the camera.



QuoteOriginally posted by Osama Binhidin Quote
thanks for the information DC do the SDXC cards make much difference


04-20-2012, 05:09 AM   #32
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I experienced the same issue (limited movie record time) with my K-5. Here is the reply I got from Pentax...

-----------------------------

Thank you for contacting PENTAX. The limit for recording a video clip on the K-5 is 4GB. This means that when the movie file size reaches 4GB, which is about the length you describe in HD 720p 30fps recording mode, the camera must stop recording and then be restarted. If you want to record longer video clips, up to 25 minutes maximum, you must lower the movie quality setting in the K-5's Rec. Mode menu. Here are approximate recording times in move mode on the K-5 by quality settings:

MOVIE (H:M:S) 3 star 2 star 1 star
1080p25 00:01:19 00:01:44 00:02:25
720p30 00:02:08 00:03:16 00:04:33
720p25 00:02:33 00:03:54 00:05:26
VGA, 30 FPS 00:06:17 00:09:30 00:13:04
VGA, 25 FPS 00:07:31 00:11:19 00:15:29

If you are in need of further assistance, please respond to this email or call our technical support center at 800-877-0155.

Sincerely, Randall S.
PENTAX Imaging Technical Support
12-12-2012, 04:35 PM   #33
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There's one question left on the 4GB file limit, though: Why can't the camera simply start recording to another file once the 4GB limit is reached, so that, provided one has a large enough card, recording up to 25 minutes is possible even in FullHD?

It's a simple case of closing one file and opening a new, then continue to stream video data into it. That can't be so hard.
12-12-2012, 06:45 PM   #34
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While it seems like a stupid oversight, the point is probably moot. The sensor will overheat long before it hits 25 minutes.

QuoteOriginally posted by tempelorg Quote
There's one question left on the 4GB file limit, though: Why can't the camera simply start recording to another file once the 4GB limit is reached, so that, provided one has a large enough card, recording up to 25 minutes is possible even in FullHD?

It's a simple case of closing one file and opening a new, then continue to stream video data into it. That can't be so hard.


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