Another application I've had in mind for raw metering is a psuedo auto exposure in continuous mode. So I wrote a script called contae.lua which does this.
It borrows a bunch of code from rawopint, but instead of being an intervalometer, it's meant to be used while shooting bursts of shots manually. While the script is running, keys other than full shoot and menu are just passed to the canon firmware. So you can open the func menu, adjust mf etc without leaving alt or exiting the script. Menu is currently set as the exit key.
In continuous mode, shoot_full is basically passed through as well, making the camera shoot for as long as you have it held. If not in continuous mode, it simulates continuous with the "hold half press and click shoot" strategy for as long as you hold the shutter down.
In either case, shots after the first shot in a burst are fed though the the same exposure system used by rawopint, with smoothing disabled and a large default ev step.
This isn't the same as real auto exposure, since it only reacts to the previous frame, but it should do a lot better than fixed exposure if you track a subject from sunlight to shade or something like that.
The interface is still in proof of concept state, but it works well enough to use for basic shooting. It doesn't know anything about jog dials etc, and menu isn't a great choice for the exit key.
For both scripts, I added an EV shift option, which lets you set the target meter level instead of the default neutral value. I also added an option to use the exposure level from the first shot as the target. They can be combined to get e.g. +1 ev from whatever the Canon firmware used for the first shot.
Attached zip contains both contae and rawopint, along with readme files for each.
I have shot a bunch of test time lapses with the current code (see my youtube channel from the previous links if you haven't had enough
). I think it's working pretty well, but I still see the glitches mentioned earlier, both on d10 and a540.
