I dont mind locked focus but locked exposure would be a problem probably (outdoor environment).
Anyways I talked to SDM guys after posting this and it seems I may be use their videosync solution.However, what I described above would be an ideal solution for me though. But I understand there are technological restraints - like the ones you talk about. Regarding time control - I will be probably better off with SDM synced video than with P&S continuous mode. Also, I need to go up to 5-10 FPS, which rules P&S out completely probably.
Could the continuous mode go on forever? No buffer or writing to sd problems?
Some of the stuff lapser did last year will let you adjust exposure "on fly" in continuous mode and IIRC correctly get you into the 1fps range. Some of his customizations have since been added to CHDK and reyalp is apparently working on others.
The application of the whole setup should be "stereo mobile mapping system" (simply a road/terrain 3D scanner) mounted on a passenger car. I only need to capture all the data when mapping - take stereo images and geospatial data (GPS/IMU) - I will do all other things (stereo depth estimation, visual odometry) in post processing.
However the tricky part is sensor fusion - I need to sync image (or video) and GPS/IMU. That is why I would like external trigger, because I could control the trigger and save current GPS data along in sync.
I am not sure if you are (or I am) not confusing continuous shooting mode with external trigger at certain FPS. What I need is the external triger at given FPS. The FPS would ideally be around 10. However, I could start at 1 FPS (is better than nothing).
I'm not sure if the current code will let you directly use either of the methods described above to shoot quickly with precision sync, but if not it should possibly to implement fairly easily.
The precision sync function is just a pause in the shooting sequence right before the shutter opens that waits for the USB 5V signal to go away. I guess the trick is to also halt the next shot until the 5V asserts again ?
Quote from: waterwingz on 14 / August / 2014, 21:57:42The precision sync function is just a pause in the shooting sequence right before the shutter opens that waits for the USB 5V signal to go away. I guess the trick is to also halt the next shot until the 5V asserts again ?So if you put it in continuous mode and held down shoot in script, just pulsing the 5v off at a rate slightly slower than the max continuous rate might do it.
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