Rifle Scopes Focal lens reflection

magtech

Ole one eye
Full Member
Minuteman
Feb 22, 2013
289
220
I was shooting with a pst and xrs2 the other day and I noticed I could see the reflection of the sky (from behind me) when shooting the xrs2. The pst had darker coatings and i didn't notice it nearly as much. While lined up on the rifle, the bottom half of the focal lens(lens closest to me) exhibits this. I had to drape a jacket I over my head last time to see the entire view.

Does this happen to all medium to higher end optics even on cloudy days?