Tele Vue 17mm Ethos vs Tele Vue 20mm Plossl: specs compared
Updated 05 September 2026.
5
specs differ
Tele Vue 17mm Ethos and Tele Vue 20mm Plossl differ on 5 specs: focal length, apparent field of view, barrel size, eye relief, optical design.
| Spec | Tele Vue 17mm Ethos | Tele Vue 20mm Plossl |
|---|---|---|
| Focal length | 17 mm | 20 mm |
| Apparent field of view | 100 degrees | 50 degrees |
| Barrel size | 2 in | 1.25 in |
| Eye relief | 15 mm | |
| Optical design | Ethos | 4-element Plossl |
Questions and answers
How do Tele Vue 17mm Ethos and Tele Vue 20mm Plossl compare?
Tele Vue 17mm Ethos and Tele Vue 20mm Plossl differ on 5 specs: focal length, apparent field of view, barrel size, eye relief, optical design.