Yet Another Sunset Script (yass) v4.5 - page 15 - LUA Scripting - CHDK Forum

Yet Another Sunset Script (yass) v4.5

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Offline c_joerg

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #140 on: 02 / May / 2018, 02:44:12 »
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I may well look into using raw but not just yet - with my ixus 70 what do you this is the fastest interval I can do in day and at night, with normal camera?
Run rawopint  in continuous mode. The ‘sleep’ value gives you the available free time.
On my cams it’s around  Max Interval = Max exposure time + 1.2s.

At night I will need about 8 second interval with 3 second exposure? 
With rawopint  in continuous mode may be about 5 second interval with 3 second exposure. But you have to check sleep value. Additional you could set a warning LED on rawopint when sleep goes negative.
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Offline andrewexeter

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #141 on: 02 / May / 2018, 09:23:20 »
Here are a few day to night timelapse clips - all taken with Yass v4.5

Not a valid vimeo URL
To take the best timelapse videos I can with only inexpensive equipment. Ixus 70

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Offline andrewexeter

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #142 on: 02 / May / 2018, 09:33:36 »
What would the perfect looking chart/graph look like for a day to night timelapse, look like - anyone please?

To take the best timelapse videos I can with only inexpensive equipment. Ixus 70

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Offline reyalp

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #143 on: 02 / May / 2018, 13:47:07 »
What would the perfect looking chart/graph look like for a day to night timelapse, look like - anyone please?
I use the charts to understand what a script is doing. IMO, good or bad should be judged from the video or images, and is very subjective. If you see a problem, like exposure isn't what you think it want in a particular segment, look at the logs and charts to see what the script did and what you might change.
Don't forget what the H stands for.


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Offline andrewexeter

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #144 on: 04 / May / 2018, 10:02:16 »
Not a valid vimeo URL
just a bit pink in the middle,
To take the best timelapse videos I can with only inexpensive equipment. Ixus 70

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Offline c_joerg

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #145 on: 04 / May / 2018, 14:10:17 »
Nice spot…
just a bit pink in the middle,
It's just the white balance ....
I have never thought about it, but you could probably adjust it by script.
Again, RAW would be at an advantage. Since you could change it with LRTimelape continuously.
M100 100a, M3 121a, G9x II (1.00c), 2*G1x (101a,100e), S110 (103a), SX50 (100c), SX230 (101a), S45,
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Offline andrewexeter

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #146 on: 04 / May / 2018, 18:46:49 »
thanks, yes this spot - Charlestown - is used in many film & TV series.

How could this WB be corrected in a Yassv4.5 script?

Do you think rawopint would make a better job?

I will try again at this view point with yass & rawopint - any predictions anyone ?

Not a valid vimeo URL
To take the best timelapse videos I can with only inexpensive equipment. Ixus 70

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Offline reyalp

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #147 on: 04 / May / 2018, 21:53:12 »
It's just the white balance ....
I have never thought about it, but you could probably adjust it by script.
You can change white balance mode using propcases. Not clear how you would decide when to change it though, and it would probably result in sudden color change.

We don't currently have a way to change the actual whitebalance values.

Since yass uses a half press cycle every shot, the Canon firmware may update the WB at any time. IIRC even if you set a specific mode like daylight instead of using auto, the camera can still do some adjustment.

Do you think rawopint would make a better job?
Since rawopint only does half press for the first shot, it presumably uses the same WB for the whole run. Whether this is better or worse probably depends on the situation.

What whitebalance mode do you normally use?

Using raw would allow you to do whatever you want with WB in post processing, at the cost of shooting interval, SD space, and more complicated workflow.
Don't forget what the H stands for.


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Offline andrewexeter

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #148 on: 04 / May / 2018, 22:23:22 »
"Using raw would allow you to do whatever you want with WB in post processing, at the cost of shooting interval, SD space, and more complicated workflow"

yes this is the trade off - increasing the interval at night - I guess I could just colour correct WB in sections of the folder in Lightroom - which would not be such a big deal.

At present I just make one correction for all the folder at the beginning - at the moment it is just an average.

In the camera I use AWB.
To take the best timelapse videos I can with only inexpensive equipment. Ixus 70

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Offline c_joerg

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Re: Yet Another Sunset Script (yass) v4.5
« Reply #149 on: 05 / May / 2018, 01:50:26 »
Since rawopint only does half press for the first shot, it presumably uses the same WB for the whole run. Whether this is better or worse probably depends on the situation.
In the camera I use AWB.
I would never choose an automatic WB. Also LRTimelapse advises against it. I do not know how big the changes are from shot to shot, but I would guess that it can get a colored flicker if you not do it smooth.
At present I just make one correction for all the folder at the beginning - at the moment it is just an average.
A reasonable white balance correction is not possible in JPG because some color channels are already cropped. Maybe that's where the extreme pink come from.

M100 100a, M3 121a, G9x II (1.00c), 2*G1x (101a,100e), S110 (103a), SX50 (100c), SX230 (101a), S45,
Flickr https://www.flickr.com/photos/136329431@N06/albums
YouTube https://www.youtube.com/channel/UCrTH0tHy9OYTVDzWIvXEMlw/videos?shelf_id=0&view=0&sort=dd

 

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