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01-24-2017, 10:00 PM   #1
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Intervalometer settings Issue?

Have been trying out the K3ii on some Astro, & seems using an Interverlometer/Timer, it's only capturing 1/2 of the number selected. IE; 20 selected, yet only 10 captured. Have checked to make sure High ISO/ noise reduction is turned off, single frame shooting is selected, Bulb mode is set to trigger on push once to start, push again to end. (Have these settings save as User settings.)

Suppose I could try Bulb mode to see if it does the same thing (Bulb mode is set as default in the user settings).

Strange thing is that it works fine w/ the K5ii, yet not w/ the K3ii. Have tried different Timers, same result.

Any hints?

01-24-2017, 11:37 PM   #2
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The interval has to equal the exposure time plus the gap. That's likely the issue.

So, if you want 20s exposures with 10s in between, you'd set the interval to 30s.

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01-25-2017, 12:11 PM   #3
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No interval, just a given# of exposures @ a given length Ie; take (20) 420s exposures, one right after the other.
01-25-2017, 02:29 PM   #4
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QuoteOriginally posted by SKYGZR Quote
No interval, just a given# of exposures @ a given length Ie; take (20) 420s exposures, one right after the other.
Hmmmm...see list below:
  • Your camera is not capable of taking a 420s timed exposure. 30s is the maximum.
  • There are two variables for interval shooting, the number of shots and the interval (user manual p51)
  • The interval should be the exposure time + the amount of time to the start of the next exposure. Example:
    • 10 shots
    • Exposure time = 20s
    • Interval = 1s
    You will get one exposure. Another example:
    • 10 shots
    • Exposure time = 1s
    • Interval = 2s
    You will get ten 1s exposures at 2s intervals over a 20s period of time.
In order to control the timing, it important to use Tv, TAv, X, or M mode for interval shooting. If you need longer exposure times or have a need to nest intervals, I suggest a wired remote with intervalometer. The one I use is capable of very long exposures with the camera in "B" mode, very long intervals, and many shots (would require external power supply and likely some form of body cooling too for extended operation).

Edit: For a wired external intervalometer, it depends on the unit. For use in "B" mode, there is some variation with some requiring "classic" bulb-mode (button down to start, button up to finish, the default) and others the "T" mode option (one click to start, a second click to finish).


Steve


Last edited by stevebrot; 01-25-2017 at 03:16 PM.
01-25-2017, 02:44 PM - 1 Like   #5
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The problem is that the interval timer for triggering shots it a bit stupid and doesn't care if the shutter is open or closed yet.

If you h ave a 10 second exposure and your interval is 10 seconds, the shutter is not yet closed and ready to be opened for the second exposure. So the camera misses its chance until the next interval

The interval time must be at least 1 second longer than your exposure time in order to have time to close the shutter and trigger the next exposure.
The K-1 fixed this by adding a "minimum" interval so the camera will always fire as soon as possible after the shutterr closes.

---------- Post added 01-25-17 at 04:54 PM ----------

QuoteOriginally posted by SKYGZR Quote
No interval, just a given# of exposures @ a given length Ie; take (20) 420s exposures, one right after the other.
What do you mean by "no interval"?
My K3-ii has a minimum of 00:00'02".

Otherwise what setting are you using for "intervalometer/Timer" that doesn't have a timer?"
01-25-2017, 03:22 PM   #6
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QuoteOriginally posted by stevebrot Quote
  • Your camera is not capable of taking a 420s timed exposure. 30s is the maximum.
Steve
Yes it is..

---------- Post added 01-25-17 at 02:26 PM ----------

Seems I'll have to check the settings on the K5ii & compare with the K3ii, as it was pointed out, works OK on the K5ii. And will also double check the timer(s) to make sure interval didn't get set accidently.

---------- Post added 01-25-17 at 02:27 PM ----------

Just to make clear...this is a wired timer, NOT the built in. (ought to have mentioned that in the beginning).
01-25-2017, 03:36 PM   #7
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Wired timer - your camera isn't doing noise reduction after taking the photo? If it is you will miss the next shot from the wired timer. Cheers.
01-25-2017, 03:57 PM   #8
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As previously mentioned, all NR is turned OFF

01-25-2017, 04:21 PM   #9
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QuoteOriginally posted by SKYGZR Quote
Yes it is..
You must have a special edition K-3 and K-5II. Neither should be capable of a timed exposure over 30s. You can extend beyond that in "B" mode with an external timer, but not with in-camera shutter timing. You cannot use interval mode with "B" mode on the K-3 or on the K-5II. Based on your description of your problem, there is no "issue" or bug with your K-3.

If you are using a "B" mode on the K-3 with an external intervalometer, care should be taken to have Menu > Custom > C1 > 7. Bulb "B" Mode Options set to the expected operation for your timer. Default is button down to start, button up to stop. If you are not getting the expected number of exposures with your external intervalometer, you may wish to consult the instructions that came with that unit. Most require that the camera be in ready state at the beginning of each interval. (Edit: Probably not) You may need to disable the sleep timer feature to accomplish this.


Steve

(...based on personal experience with the K-3 with both IR and wired intervalometers as well as the in-camera intervalometer...)

Last edited by stevebrot; 01-25-2017 at 04:34 PM.
01-25-2017, 05:15 PM   #10
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I'm aware of these settings. No "special edition" cam's. For an example, set the wired timer to take (20) 420s 1600iso exposures, yet over that period, only (10) were captured. (This was over a 2-1/2 hour period). And yes, it's set for push to open, push to close. (Which WAS actually on "Type2 Press to Start, Press again to Stop)

Changed it to Type1 Press & Hold for exposure, Releasing stops exposure....Seems to have "fixed it", yet only tested for 5 60s shots.


Going to have to compare settings between the two cams, (also previously mentioned), as seems running in circles here.

P.S> it's a K3ii NOT a K3

Last edited by SKYGZR; 01-25-2017 at 09:10 PM. Reason: Think issue's solved
01-25-2017, 09:30 PM   #11
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QuoteOriginally posted by SKYGZR Quote
Changed it to Type1 Press & Hold for exposure, Releasing stops exposure....Seems to have "fixed it", yet only tested for 5 60s shots.
It sounds like you are making progress. The Type 2 option would cut the number of exposures in half. My wired intervalometer uses Type 1, while my IR intervalometer uses Type 2 due to subtle differences in home the two types of shutter release work.

QuoteOriginally posted by SKYGZR Quote
P.S> it's a K3ii NOT a K3
They are the same for this and other shared features and that is a good thing


Steve
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