Yes, but how big of a part of the price is it?
If the camera currently costs 200 €, how much would you ask for it, if it didn't have the CPL (and you hadn't even developed the option)?
Or in the case of a windscreen with solar protection film, in the middle within the dotted area (which is always without that film). The rest of the windscreen is covered with a thin metal film.
Indeed, which is why I didn't say that You should have gone that route, but that it could have been an option for those not wishing to deal with all these discrete units.
And all this could theoretically be replaced by a simple low-powered chip (think something compatible with arduino or similar, for example) and a mosfet driver.
Granted, you wouldn't be able to change the timer settings on the fly, but then again, you'd have far more control using code.
Any reason why the acceleration data isn't logged into the video at all times, but only at the beginning of the recording session before GPS lock is received?
It might also be helpful to enable precise time display in your video player, if it isn't already, for example mpc-hc can display time with millisecond precision.
Quite wide field of view makes it appear as if the objects aren't moving as quickly relative to you.
Measure time vs road markings, posts, trees etc to calculate real speed.
A common 0,75 mm2 or 18 AWG wire should be plenty, it's still flexible enough for easy placement and you'll get below 0.1 V voltage drop.
Keep in mind that you can pick the ground near the PMP install location, doesn't have to be near the fuse box.