2) ZoomI have never tried zoomed timelapses.I thought the zooming position of the lens wasn't precise enough to achieve a constant factor of zoom.
4) sporadic dark framesDid you have the same problem with the previous (uBasic) version of the script?Other people had, and the problem was solved by placing some short delays before and after set_sv and set_tv96_direct. There is some bug in CHDK that sometimes make those commands fail, but a pause helps...You could check the EXIF of the underexposed frames, to see what is wrong, (ISO or shutter)...Usually the underexposed frames have all the same exposure (or ISO), namely the exposure (or ISO) that was manually set in the camera when you started the scriptI would suggest increasing the sleep() values before and after set_sv96 and set_tv_96_direct...
4) CrashAs with the same 491 build your camera crashed and mine didn't, I think there must be some problem in the memory management in your camera (a slight problem in porting the firmware that causes a memory leak???). These kind of problem are a real hassle, because it could mean you can't have ANY script running for very long time (I mean hours and maybe days)
It doesn't travel when zoom is not being adjusted, does it?
in any case I only use propcases to change those parameters in my scripts
On my trunk build I've run a timelapse for about 6 hours without problems once and motion detector for about 3 to 4 hours many many times without crashing.
It's probably completely unrelated, but a while ago I noticed that half-pressing while zoomed produces a little zom-like movement (the image enlarges and reduces a bit). I guess the focusing mechanism enalrges the image a bit.Doing the same wothout zooming does not produce the same effect. So, without doing any other test I supposed that the exact magnification generated by a specific zoom step was subject to slight variations...
All in uBasic or something in Lua too?
sleep(300) -- change ISO set_sv96(shoot_sv) sleep(300) -- change exposure set_tv96_direct(shoot_tv) sleep(300)
Someone who knows about camera optics would know better, but from the sounds and live view image of my camera I'd guess that the focus mechanism travels more when zoomed in (my camera clearly focuses faster at wide angle, the motor sounds back and forth are a lot shorter). Zoom probably magnifies this movement further. At zoom 1.1x I can already sometimes see this zoom-back-and-forth-while-focusing effect when pointing the camera to a straight outline of a door and aligning it with aa grid line. At full 4x zoom it's clear on any scene that has any sort of shapes.
print("blah", num, "blah")
print("blah" .. num .. "blah")
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Started by mattkime
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Completed and Working Scripts
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Creative Uses of CHDK
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