Camera rotation and preview rotation difficulties @ 90 deg.

[caerandir]

Hi,

I want to use the camera module v2, rotated by 90 degrees, on a 16:10 screen (1280x800), which is rotated also by /boot/config.txt line "display_rotate=3". All on a Raspberry Pi 1, 512 MB. I face problems:

Code 1: Camera = picamera.PiCamera() Camera.resolution = (3280, 2464) Camera.rotation = 90 Camera.preview_fullscreen=False Camera.preview_window=(0, 0, 800, 1066) Camera.start_preview()

Result:

• camera image is rotated by 90 degrees
• preview window seems to be 800x1066, but only the middle (horizontally) of the preview window shows the actual preview, which is 800x600 (horizontal orientation) and only the middle part of the rotated camera image is visible in this area.
• preview is fast/high framerate (estimated 15 fps or so)

Code 2: Camera = picamera.PiCamera() Camera.resolution = (3280, 2464) Camera.rotation = 0 Camera.preview_fullscreen=False Camera.preview_window=(0, 0, 800, 1066) Camera.start_preview(rotation = 90)

Result:

• as desired: Camera preview shows full camera image rotated by 90 degrees in 800x1066.
• frame rate low (estimated 3-5 fps or so)

Code 3: Camera = picamera.PiCamera() Camera.sensor_mode = 2 Camera.rotation = 90 Camera.preview_fullscreen=False Camera.preview_window=(0, 0, 800, 1066) Camera.start_preview()

Result:

• Camera image is rotated by 90 degrees
• preview window seems to be 800x1066, but the actual preview is 666x1066 (16:10!), centered, now vertically, showing only the 16:10 middle part of the 4:3 image of the camera.
• Framerate is fast

I'm totally at a loss... Code 2 would be totally fine with me if it would not have the slow framerate...

Any help appreciated!

Kind regards

Caerandir

[caerandir]

Addendum: If I add the following to Code 3:

Camera.capture("test.jpg", format='jpeg', use_video_port=False, resize=None, splitter_port=0, bayer=False)

The resulting image is 800x1280 - so it seems to me that sensor_mode=2 does not pick 4:3 at max. resolution (as suggested here), but uses the actual screen resolution, which would explain the aspect ratio.