WGS84 Orthomosaic Distorted in QGIS

[jazzyj]

Source photos were WGS84 projection and used that projection throughout processing all the way to orth export.  When I load the GeoTIFF into QGIS the image is distorted to look wider than it should look (circles are not circular but slightly oval).  I swear I remember running into this before and I ended up trying some other projection settings in QGIS.  By changing it to NAD83 (UTM Zone 10T) it fixes it.  This seems odd this happens as the GeoTIFF looks fine through an image viewer.

[Alexey Pasumansky]

Hello jazzyj,

Have you tried to measure the dimensions of "distorted objects" in QGIS? Probably, it is using the same scale for degree units along X and Y axis instead of same scale in meters, as you might expect?