[Qgis-user] Projection question

[Mikhail Umorin]

Hello —

I have a problem with rendering layers with different projections. I
have an SHP file with "+proj=longlat +ellps=GRS80 +datum=NAD83 +no_defs"
and a geoTIFF file with "+proj=longlat +ellps=WGS84 +datum=WGS84
+no_defs". That's all the projection data from "Properties". They cover
exactly the same area but do not even overlap in QGIS. I also noticed
that when geotiff file is rendered the distances that should be 3
degrees are shown as about 10 degrees (my project options are set to
Decimal Degrees) . I suspect that there is some confusion with
meters/feet somewhere in the reprojection process. 

Is there any way to add "+units" option to the description of the
layer's projection? Would this solve the problem?

Thank you for your time, 

Mikhail.