I looked into this issue a bit deeper, since I was curious to know why some aircraft had bad reflections, while others don’t. I made some comparisons between the Flying Iron Spitfire and FW190.
The Spitfire does NOT seem to have the excessive canopy reflections, but the FW190 does. So what’s the difference?!
At least for FS2020, it looks like aircraft 3D models are split into EXTERNAL and INTERNAL models.
- FW190: both inner and outer surfaces of the canopy glass are in the EXTERNAL model
- Spitfire: the inner surface of the canopy glass is in the INTERNAL model, the outer surface of the canopy is in the EXTERNAL model.
Over here in the dev support forums, the FSReborn developer Raul found that moving the canopy glass 3D model from the external model to the internal model solved the issue for his aircraft. It looks like materials in the external model are designed to reflect the environment - which I guess makes sense but I assume something is different than in MSFS 2020.
Now I can’t say if this is the reason behind ALL of this, but it was interesting (to me 
). Here 
is the FW190 INTERNAL model, note how it doesn’t have any glass in the INTERNAL 3D model; because it’s all in the EXTERNAL model!
And here is the Spitfire for comparison - with the inner glass surface in the INTERNAL 3D model. The outer glass is in the EXTERNAL model.
