Incorrect exposure time raported?

OpenMV Products
1

Hi,
I want to control the exposure time of the global shutter sensor.
When running the Sensor Exposure Control example, it gives this output:

>>> Initial exposure == 31236
Current Exposure == 31236
New exposure == 31236
111.111
83.3333
76.9231
74.0741
71.4286
70.5882
70.0
69.5652
68.7023
68.4931
68.323
67.7966
67.7083
67.6328
67.5676
67.2269
67.1937
67.1642
67.1378
66.8896
66.879
66.8693
66.8604
66.6667
66.6667
66.6667
66.6667
66.5083

How can a camera run at 66 fps while having an exposure time of 31 ms??

2

Hi, it seems correct. The frame rate is converging on 66 FPS.

The frame rate calculation is an average… so, it’s not going to be spot on until it runs for a while.

3

But 66 fps is a frame time of about 15 ms. So the exposure time can be 15 ms max.
But it is set and reported as 31 ms.

4

Sorry, responded too quick.

You are correct. This is most likely a bug. Thanks for finding it. Can you make a bug ticket here: Issues · openmv/openmv · GitHub

I will fix it over the weekend.