Tele Vue 21mm Ethos vs Tele Vue 3.5mm Delos: specs compared
Updated 05 September 2026.
5
specs differ
Tele Vue 21mm Ethos and Tele Vue 3.5mm Delos differ on 5 specs: focal length, apparent field of view, barrel size, eye relief, optical design.
| Spec | Tele Vue 21mm Ethos | Tele Vue 3.5mm Delos |
|---|---|---|
| Focal length | 21 mm | 3.5 mm |
| Apparent field of view | 100 degrees | 72 degrees |
| Barrel size | 2 in | 1.25 in |
| Eye relief | 15 mm | 20 mm |
| Optical design | Ethos | Delos |
Questions and answers
How do Tele Vue 21mm Ethos and Tele Vue 3.5mm Delos compare?
Tele Vue 21mm Ethos and Tele Vue 3.5mm Delos differ on 5 specs: focal length, apparent field of view, barrel size, eye relief, optical design.