The Vortex Viper HD 10x42 improves on the model it replaces, mostly on the optical side, with strong astigmatism and chromatic aberration correction. Reviewers measured a wider 6.65-degree field of view and very little light fall-off across the image field. Construction is solid, with a waterproof, argon-filled body and a lifetime warranty behind it. The knocks: transmission efficiency drew criticism, and minimum focusing distance grew to 1.90 meters from the previous model's 1.7 meters.
- — Excellent astigmatism correction
- — Good correction of chromatic aberration
- — Slightly truncated exit pupils
- — Too low transmission at this price point
▾Why it's ranked here
The Vortex Viper HD 10x42 improves on the model it replaces, mostly on the optical side, with strong astigmatism and chromatic aberration correction. Reviewers measured a wider 6.65-degree field of view and very little light fall-off across the image field. Construction is solid, with a waterproof, argon-filled body and a lifetime warranty behind it. The knocks: transmission efficiency drew criticism, and minimum focusing distance grew to 1.90 meters from the previous model's 1.7 meters.
- — Excellent astigmatism correction
- — Good correction of chromatic aberration
- — Slightly truncated exit pupils
- — Too low transmission at this price point