Ed Johnstone

It appears that the `raspistill` preview resolution is documented [here](https://github.com/raspberrypi/userland/blob/master/host_applications/linux/apps/raspicam/RaspiPreview.c) as 1024x768 which supports the above observation that the setting for PiCamera `camera.start_preview(resolution=(1024, 768))` matches `raspistill` And it appears that...

Note: the above appears **_not_** to be true for low light. Something else besides preview resolution is going on in low light. So the question is still open: "What else...

In order to get both bright and low light settings to approximate what raspistill is doing by default, then adding `exposure_mode = nightpreview` seems to accomplish this. Listed below is...

Your welcome!