Can a script do this for shots using an ND1000 filter? - Script Writing - CHDK Forum

Can a script do this for shots using an ND1000 filter?

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Can a script do this for shots using an ND1000 filter?
« on: 08 / July / 2019, 17:43:37 »
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Having started to experiment with ND filters and finding that the camera will only show times up to 15s in the exif data, I would like to know if a script could be written to trigger a timer delay, say 2 seconds, then take a picture which could be up to 2 minutes exposure (set manually) then edit the exif/keyword data to say "ND1000" and correct the exposure time to what was used.
I know there are scripts to add keywords to selected shots, but I would want this only to add the text to the photo just taken by the script.

Re: Can a script do this for shots using an ND1000 filter?
« Reply #1 on: 08 / July / 2019, 20:28:42 »
... then edit the exif/keyword data to say "ND1000" and correct the exposure time to what was used.
The most of what you suggest is trivial to put into a script.  But AFAIK the only work done so far with changing EXIF data via a Lua script is the ability to write to the comment field of the EXIF data.  You could push "ND1000" and the exposure time in there as a string. However, correcting the EXIF exposure time fields is not something I have seen anyone attempt but I could be wrong.
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Re: Can a script do this for shots using an ND1000 filter?
« Reply #2 on: 09 / July / 2019, 01:59:04 »
finding that the camera will only show times up to 15s in the exif data,

Which cam?
I never checked the limits but my G1x shows a least 30s.
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