Closed GoogleCodeExporter closed 9 years ago
It seems to me that it works the way my Canon timer remote works i.e. the
interval time is the time between shots, not the overall time. Each function is
done independently. The interval timer begins counting after the shutter is
depressed, so it's completely independent of exposure time. I could take a 5min
exposure with 15 sec between the exposures.
http://learn.usa.canon.com/app/pdfs/quickguides/CDLC_TC-80N3_QuickGuide.pdf
This is how I thought all remote timers worked.
Original comment by colinban...@gmail.com
on 11 Dec 2011 at 6:50
This is a bug, indeed.
Original comment by eduardo....@gmail.com
on 11 Dec 2011 at 8:52
A clarification of comment #1 regarding the TC-80N3. I have the TC-80N3
timer/remote controller.
If I set Interval=15s and shutter speed (on the camera) to 8s (or 1s, 2s, 4s),
I get 1 exposure every 15 seconds. I can change the camera shutter speed
without affecting the timelapse interval, until my shutter speed reaches
(slightly less than) 15s, when frames begin to be dropped. That is because the
TC-80N3 is just pressing the shutter button every 15s.
The TC-80N3 also has a "Long Exposure Mode" that the 400plus firmware currently
does not imitate. You can set the camera in bulb-mode, and let the TC-80N3
provide a long exposure (in 1-second steps, up to 99h:59m:59s). In this mode,
the two settings are additive, so the time between exposures is "Bulb Timer" +
"Interval". But this is a combination of 2 modes, rather than the behaviour of
the "Interval Timer Mode" in isolation.
More sophisticated intervalometers (like "The Little Bramper") allow the bulb
time to be adjusted in tiny steps (from 1/10s in 1ms steps), without affecting
the timelapse interval. This allows smooth adjustment of exposure during
sunrise/sunset, without the flickering that 1/3 stop adjustments cause. A
great feature, but beyond the scope of this issue.
Original comment by datagro...@gmail.com
on 11 Dec 2011 at 9:51
I also think that the intervalometer should just "press the shutter button" at
constant intervals, and exposure time should not affect the cadence of shots;
what it currently does is just add a fixed pause between shots, thus the
problem described. And this does not affect only long exposures, remember the
intervalometer can also be used to trigger the EAEB script (which could also do
long exposures, by the way). Manually adjusting the intervalometer to take into
account the exposure time may be impossible in some situations (think Av mode
and low light, for example).
Magic Lantern can do automatic bulb ramping (exposure is adjusted as light
changes), but that is currently off-limits for 400plus; however, fixed bulb
ramping, like what "The Little Bramper" does, looks very doable. Please, fill a
separate feature request if you are interested.
Original comment by eduardo....@gmail.com
on 11 Dec 2011 at 10:26
This issue was closed by revision r1127.
Original comment by eduardo....@gmail.com
on 13 Mar 2012 at 10:35
Original issue reported on code.google.com by
datagro...@gmail.com
on 11 Dec 2011 at 12:36