First off, want to verify these are correct as I found them on another forum post:

XT2 Visual

Sensor width (mm) = 7.4mm
Sensor Height (mm) = 5.55mm
Pixel size/Pitch (um/mm) = 1.85um / 0.00185mm
Focal length (mm) = 8mm
Principle point x (mm) = 7.4mm/2 = 3.7mm
Principle point y (mm) = 5.55mm/2 = 2.7525mm

XT2 Thermal

Sensor width (mm) = 640*17um * 10^(-6)m/um = 10.88mm
Sensor Height (mm) = 512*17um * 10^(-6)m/um = 8.704mm
Pixel size/Pitch (um/mm) = 17um / 0.017mm
Focal length (mm) = 13mm
Principle point x (mm) = halfway in between the sensor 10.88mm/2= 5.44mm
Principle point y (mm) = halfway in between the sensor 8.704mm/2= 4.352mm



I am after the same sort of information for the Z30 camera. I believe this may be correct, but again I would like it verified. Also, I am really not sure how to calculate Pixel Size/Pitch. On this XT/XT2 comparison guide https://www.dji.com/ca/products/compare-zenmuse-xt it shows under 1/1.7" CMOS，Effective Pixels: 12 M visual camera sensor but how that relates to pixel size, no idea.It gives a specific pixel pitch valye of 17 micrometres for the thermal. The Z30 manual https://dl.djicdn.com/downloads/zenmuse_z30/20180810/Z30_User_Manual_EN.pdf gives CMOS 1/2.8" Effective Pixels 2.13M - but again, not sure how to translate that into pixel size.

Sensor Width - 3.42
Sensor Height - 4.59
Pixel Size/Pitch -
Focal Length 4.3mm - 129mm depending on zoom
Principle point x (mm) = halfway in between the sensor 3.42mm/2= 1.71mm
Principle point y (mm) = halfway in between the sensor 4.59mm/2= 2.295mm

It would be interesting to have a clear and simple answer from DJI. As customer, we need those informations  

I know this is an old post but in regards to his question about photo / Pixel size I did a simple test and think I have the answer. Zoomed all the way out on the Z30 I took a pic and opened the image up  in Microsoft Paint. That program gives you pixel size in the bottom of the program. Fully zoomed out I am getting 1920px X1080px. You can probably get an EXIF software to look this up as well. Would be great if anyone can confirm this is correct or knows of another way to check. I will take a fully zoomed in image and see what I get there too and repost.