Canon has patented an 0.82x optical viewfinder for a DSLR. Canon uses a few different viewfinder magnifications for their DSLRs. For example, the EOS-1D X Mark II uses a 0.76x viewfinder, the EOS 5D Mark IV a 0.71x viewfinder and the EOS Rebel T6s a 0.82x viewfinder.
Patent Publication No. 2016-191760 (Google Translated)
- Published 2016.11.10
- Filing date 2015.3.31
- Diopter -1 -3 +1
- Focal length 61.30 58.73 64.32
- Eye point 20.0 20.0 20.0
- Magnification 0.82 0.85 0.78
If I had to guess, I’d say this is for an upcoming EOS Rebel DSLR.