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D5000 Interval timer problem

DLConway

Mariposa, US
3 posts

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DLConway Registered since 12th Sep 2013
Fri 13-Sep-13 03:41 PM

Hello I am brand new to this forum. I use a D5000. Back in August I was trying to take pictures of the Perseid meteor shower. I sat the camera to manual, ISO 800, Shutter speed 30 seconds, Image type RAW, long exposure and high iso noise reduction both turned off. Then I sat the interval timer in the camera to interval 1 second, number of intervals 451 and the camera started taking pictures just fine. However, after about 20 shots the camera quit taking pictures. I reset everything and started again and the same thing happened. Battery was fresh and showing a full charge. air temperature was in the upper 50's.
Any thoughts on why the camera shuts down so soon? In the past I have used the interval timer with noise reduction on and increased the interval time to about 2.5 times the shutter speed with no problems, but since I had the noise reduction off I thought the 1 second would be OK. The only thing I can think of is that the buffer got overloaded. I know that if I am shooting in burst mode and especially if I'm shooting in RAW after a few shots I have to let the camera catch up. Does the D5000 quit processing one image when it starts taking the next causing the buffer to fill up? If not I would think that the 31 seconds between the start of one shot and the start of the next would be enough time to finish processing and saving the raw image. Any thoughts will be greatly appreciated especially if you have experienced this and solved the problem.

JosephK

Seattle, WA, US
7108 posts

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#1. "RE: D5000 Interval timer problem" | In response to Reply # 0

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Fri 13-Sep-13 07:56 PM

Sounds like there was just some incorrect interval timer settings. The interval time needs to include all the exposure time for the frame(s) plus any wait time. For a single 30-second frame and a 1-second wait, you need an interval time of 31 seconds. (I would go with 32 just to be safe.)

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Joseph K
Seattle, WA, USA

D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX

aolander

Nevis, US
3977 posts

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#2. "RE: D5000 Interval timer problem" | In response to Reply # 0

aolander Silver Member Nikonian since 15th Sep 2006
Fri 13-Sep-13 08:25 PM

Joseph is correct. The interval has to be longer than each exposure.

Alan

DLConway

Mariposa, US
3 posts

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#3. "RE: D5000 Interval timer problem" | In response to Reply # 1

DLConway Registered since 12th Sep 2013
Fri 13-Sep-13 09:04 PM

Thank you for the reply. I just tried it out to see what happens because my understanding from reading the manual was that the new interval time started when the shutter closed. I set the interval timer to 32 sec and a shutter speed of 30 seconds, the shutter went through the 30 second cycle then the camera waited 32 seconds and took the next shot instead of taking it 2 seconds after the cycle ended. I am trying to get as minimal amount of time as possible between shots. Looks like I need to play around with the timing to see what happens. I also went back and looked at the meta data on all of the shots I took that night and noticed when I had the camera set on 25 sec shutter speed and 1 minute interval with the noise reductions on it never shut down. With that in mind do you think I'm on the right track with the buffer overload idea?

JosephK

Seattle, WA, US
7108 posts

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#4. "RE: D5000 Interval timer problem" | In response to Reply # 3

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Sat 14-Sep-13 03:58 AM

If you are using a shutter speed measured in whole seconds, your buffer will almost always be empty.

If Long Exposure Noise Reduction is turned on (on purpose or by mistake, check the default setting) then that will double your shutter speed length (25 seconds becomes 50 since it takes two frames).

Once you have set your interval number and durations, during the run if your shutter speeds are too long for the interval then the camera will skip to the next available interval to maintain the schedule which results in frames being dropped.

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Joseph K
Seattle, WA, USA

D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX

DLConway

Mariposa, US
3 posts

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#5. "RE: D5000 Interval timer problem" | In response to Reply # 4

DLConway Registered since 12th Sep 2013
Sat 14-Sep-13 05:31 AM

Thanks again, I did a little more testing and found it takes about 4 seconds to process the image after taking the shot so I set the interval timer to 35 seconds and it works just like I wanted. Thank you for steering me the right direction.

G