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Ultimate Intervalometer - a script for shooting over a long duration - v4.8

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #500 on: 19 / September / 2018, 09:16:53 »
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Could you tell me what value to adapt in the script, then I can toggle it myself.
Or would you like to make that change?
I'll post an updated script later today.
« Last Edit: 19 / September / 2018, 09:26:17 by waterwingz »
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline Mlapse

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #501 on: 19 / September / 2018, 09:54:04 »
No hurry, my first chance to set it up is this weekend. definately not before.

But to test this i've just put the "shutter speed stack" to use..just to have an idea...
2 seconds max seems to be a better choice at least for my 1/2.3 sensor camera, less noise, more to see, still more than dark enough to be night. (made images with 1/3 sec steps)

(setting: ISO 400 f/3 1/2.3 sensor <50%moon)

I'd have to see if the transition from day to night is still as smooth if we lengten that max time and also how it works out with the 1/1.7 sensor, but i think it might improve the usage of smaller sensor camera's especially if we could set that max time in the menu.
Because if you want to use a bit of zoom that f/3 is not available.

Unless you only want to timelapse night like it's well lit, then 5 seconds max might be a better choice, especially with the 1/2.3...all depending on what you want to achieve.
« Last Edit: 19 / September / 2018, 17:44:28 by Mlapse »
frustration is a key ingredient in progress

Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #502 on: 19 / September / 2018, 20:15:11 »
I was wondering and coudn't find it in the documentation
http://chdk.wikia.com/wiki/Ultimate_Intervalometer
in the ultimate.log I see that minimum tv: 1/1000 and maximum is 1 sec.
Finally got a moment to look at this and I'm very confused.  Sorry for not checking sooner.

The ultimate.lua script does not control exposure in any way.  It lets the Canon firmware manage that each time it takes a shot.

And there is nothing logged that indicates maximum Tv.  There is a log of  a min Tv but that value is used to decide if it's bright enough to take a shot.  The actual exposure is not controlled by that.

Quote
looking at ultimate.lua it seems that shorter and longer timings are included.
Where?  Can you post a code snippet?  Are we even looking at the same script?
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline Mlapse

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #503 on: 20 / September / 2018, 01:34:50 »
That's why I couldn't find that setting then, it is not in the script.
Too bad, but if 1 second is the limit, that's what we have to work with.
I assumed that since other script were able to go over 1 second, limits were set by the script.
I'll go and look for a bigger sensor camera.

I thought line 196-203 where the tv_str is defined was where all possible timings were listed.
tv_str = {
       ">64",
        "64",    "50",    "40",    "32",    "25",    "20",    "16",    "12",     "10",   "8.0",
       "6.0",   "5.0",   "4.0",   "3.2",   "2.5",   "2.0",   "1.6",   "1.3",    "1.0",   "0.8",
       "0.6",   "0.5",   "0.4",   "0.3",   "1/4",   "1/5",   "1/6",   "1/8",   "1/10",  "1/13",
      "1/15",  "1/20",  "1/25",  "1/30",  "1/40",  "1/50",  "1/60",  "1/80",  "1/100", "1/125",
     "1/160", "1/200", "1/250", "1/320", "1/400", "1/500", "1/640", "1/800", "1/1000","1/1250",
    "1/1600","1/2000","1/2500","1/3200","1/4000","1/5000","1/6400","1/8000","1/10000","hi"  }
« Last Edit: 20 / September / 2018, 01:46:14 by Mlapse »
frustration is a key ingredient in progress


Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #504 on: 20 / September / 2018, 06:38:22 »
Too bad, but if 1 second is the limit, that's what we have to work with.
There is no limit imposed by the script.  Exposure is determined by the Canon firmware based on the shooting mode you select in the Canon setup menus.
Quote
I assumed that since other script were able to go over 1 second, limits were set by the script.
Are you trying to tell us your camera will not use a longer exposure in low light situations?  Other scripts can override the Canon settings- many of mine do - but it’s usually for a specific reason.  The ultimate.lua script has no such reason so is happy to let the camera’s built-in firmware do the exposure.  You can change that somewhat by picking a different scene.


Quote
I thought line 196-203 where the tv_str is defined was where all possible timings were listed.
tv_str = {
       ">64",
        "64",    "50",    "40",    "32",    "25",    "20",    "16",    "12",     "10",   "8.0",
       "6.0",   "5.0",   "4.0",   "3.2",   "2.5",   "2.0",   "1.6",   "1.3",    "1.0",   "0.8",
       "0.6",   "0.5",   "0.4",   "0.3",   "1/4",   "1/5",   "1/6",   "1/8",   "1/10",  "1/13",
      "1/15",  "1/20",  "1/25",  "1/30",  "1/40",  "1/50",  "1/60",  "1/80",  "1/100", "1/125",
     "1/160", "1/200", "1/250", "1/320", "1/400", "1/500", "1/640", "1/800", "1/1000","1/1250",
    "1/1600","1/2000","1/2500","1/3200","1/4000","1/5000","1/6400","1/8000","1/10000","hi"  }
That's only used for converting internal APEX96 shutter speed values into "human readable" text for the log file.  Back when I wrote the script there were no script functions available to do that.
« Last Edit: 20 / September / 2018, 06:50:13 by waterwingz »
Ported :   A1200    SD940   G10    Powershot N    G16

Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #505 on: 20 / September / 2018, 08:21:30 »
Thinking about this, maybe you need a script with better exposure control?.  How about this one?

https://chdk.setepontos.com/index.php?topic=12697.0
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline reyalp

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #506 on: 20 / September / 2018, 15:59:51 »
Thinking about this, maybe you need a script with better exposure control?.  How about this one?

https://chdk.setepontos.com/index.php?topic=12697.0
Yeah for most (if not all) shooting modes, Canon auto-exposure won't go over 1s. Canon manual settings or CHDK overrides will, but fixed exposure probably isn't what Mlapse wants. Some of Canon's "night" modes might, but they generally force everything else to auto which may not be desired.

Rawopint will use exposure over 1s, but may or may not be suitable depending on the other requirements.
Don't forget what the H stands for.

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Offline Mlapse

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #507 on: 20 / September / 2018, 16:27:08 »
I had a few moment to look over rawopint, but ultimate intervalometer suits my needs much better since i shoot troughout the day.

Plus I have absolutely no room for RAW images alas, so I'm working in jpg.

I have to test how restarts would hold under different light conditions, but since it works from previous frame that might spoil the setting at a new start.

It is ashame that canon's auto exposure max is set at 1 second...suddenly I'm thinking can't we combine both scripts?
could it be possible to run ultimate intervalometer and switch to reyalp script at first Tv=1 sec, f at smallest value in combination with an underexposure threshold and back again when the sun comes up...

hmmmm, this sounds like a lot of work for a limited improvement for an even smaller targetgroup (me)......forget I mentioned it.

thanks both for your input, i'm curious about what rawopint can do, so i'll test that this weekend.
But i'll accept the max 1 second in UI for now.
« Last Edit: 20 / September / 2018, 16:48:30 by Mlapse »
frustration is a key ingredient in progress


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Offline reyalp

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #508 on: 20 / September / 2018, 16:51:05 »
Plus I have absolutely no room for RAW images alas, so I'm working in jpg.
FWIW, you don't have to shoot raw with rawopint, the "raw" in the name comes from the fact it uses raw sensor data to calculate exposure.

Quote
It is ashame that canon's auto exposure max is set at 1 second...
suddenly I'm thinking can't we combine both scripts?
As you say, combining them would be very complicated. Better to modify one or the other to do what you want, or use another script.

Others you might try are YASS https://chdk.setepontos.com/index.php?topic=10493.0 or sunsetF16 https://chdk.setepontos.com/index.php?topic=3079.40
Don't forget what the H stands for.

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Offline Mlapse

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #509 on: 20 / September / 2018, 17:26:53 »
thanks for the tip.
i am really happy that UI uses the internal clock for taking pictures instead of me figuring out what the average delay is between shots and ending up with a frame more or less per hour.
I didn't think that was really important when i started doing time lapse, I usually didn't even calculate, i just accepted that timing was flexible.
but for the project i'm running now it has become a must.

The pictures and the transitions from day to night and vice versa are also good enough for my purpose...

That is why i stick with UI for now

it's just that i found that the night shots were a bit on the dark side.

So after testing at 1.3 1.6 2 2.5 seconds (i tested up until 25 sec) I could see improvement at every step in noise reduction and detail.
I'd say that at 1.3 seconds there already was 20-30% less noise on the 1/2.3 sensor opposed to 1 sec, and more detail without loosing the night darkness.
Or i could get the same noise with 2 f-stops more (read zoom)
 
Just one small step extra would provide a serious improvement...I didn't know it was a giant leap for Canon.
« Last Edit: 20 / September / 2018, 17:46:44 by Mlapse »
frustration is a key ingredient in progress

 

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