Agisoft Metashape

Agisoft Metashape => Camera Calibration => Topic started by: flightfollowing on April 20, 2013, 10:04:10 PM

Title: iwitness calibration erroneous focal length?
Post by: flightfollowing on April 20, 2013, 10:04:10 PM
I am trying to import an iwitness calibration into photoscan and lens, but getting unusual values.
Attached is the calibration report from iwitness, and the pixels are 17um and the camera is 640 x 512 yielding a sensor size of 10.88 x 8.704
However, when I convert, I get an impossible focal length?
Title: Re: iwitness calibration erroneous focal length?
Post by: Alexey Pasumansky on April 21, 2013, 02:54:42 PM
Hello flightfollowing,

Could you please chek you are entering correcy values for Photosite width/height - they are pixel size (0.0017mm) and not the width/height of the sensor.
Title: Re: iwitness calibration erroneous focal length?
Post by: flightfollowing on April 21, 2013, 04:23:53 PM
Alex,

That was it, Thanks! it was actually 0.017 for a pixel size. If you update the help section for lens, you might toss in a screenshot of example numbers to help users and cut down questions.

Thanks again for the fast solution.