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08-18-2017, 03:06 AM - 1 Like   #1
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Pentax K3 ii intervalometer stops

Hi there, yesterday night I tried to make a startrail image. My plan was to take about 250 shots of 25sec each and stack then later on pp. I set the intervalometer on 250 shots with 4 sec interval. It started but after about 30 shots the camera went somehow on a standby mode so I had to press the shutter again to restart the procedure. After a while the same, the camera stopped. Can you please advise me what to do? Why the intervalometer stops before it completes the full number of shots?
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Nick

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08-18-2017, 03:25 AM   #2
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I think it's a little different problem, but my K-30 was always stopped interval shooting when it started a new folder on the sd card. So every midnight and when reached the 500 image folder limit and when the image counter went from 9999 to 0000.
08-18-2017, 03:44 AM   #3
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Try a interval of 29 seconds. If I am not mistaken you have to add the interval time to the time the exposure takes.
08-18-2017, 03:52 AM - 1 Like   #4
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250 shots 4 seconds apart will take 1000s to complete. You can only get about 33 x 30s exposures in that time. The camera can't take the next image while it is already in the middle of the last one, so it will skip them.

The interval needs to be the exposure time plus a second or two for reset and write time.

08-18-2017, 07:29 AM - 1 Like   #5
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Turn off the background subtract NR feature and take care (as noted above) that the interval time is long enough to accommodate both the exposure and the time to process. As noted above, an interval of 29s would accomplish your intent (25s exposure + 4 second gap).
Shooting (camera icon) menu 2 > Slow Shutter Speed NR > OFF
IIRC, some newer models allow the option of dynamic interval timing (interval based on shot finished rather than shot started), but not your K-3II.


Steve

Last edited by stevebrot; 08-18-2017 at 07:35 AM.
08-18-2017, 08:03 AM   #6
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Mine stops with my K-70 and I think the KP as well. Will try this ^^
08-18-2017, 11:12 AM   #7
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As others have said, the solution is to increase the interval time by the shutter speed, plus a couple of seconds for processing Do make sure NR is off too as Steve said, as well as distortion corrections.

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08-18-2017, 11:26 PM   #8
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Thanks a lot guys for your help!

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08-12-2018, 05:03 AM - 1 Like   #9
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I had the same problem last night, but now i know the answer to this!

Thanks a lot guys!
08-15-2018, 08:43 PM - 1 Like   #10
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QuoteOriginally posted by Adam Quote
As others have said, the solution is to increase the interval time by the shutter speed, plus a couple of seconds for processing Do make sure NR is off too as Steve said, as well as distortion corrections.
Distortion corrections don't seem to add all that much time to an image save that a four second gap wouldn't handle. OTOH, for star trails he might want to use the raw images, which AFAIK aren't affected by lens corrections of any sort. So there would be little point in keeping them on.
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