studio3607

Monocular Calculator

WILDLIFE SPOTTING • HANDHELD

Model magnification, objective size, FOV, stability & low-light performance. Get data-driven recommendations for birding, hunting and nature use.
Interactive Explorer
Magnification ×
5–20
5×
12×
20×
Objective Diameter
mm
20mm
35mm
50mm
FIELD OF VIEW @ 1000 YARDS
Narrow (high power)
Wide (low power)
SIMULATED VIEW
Simulated wildlife view
Compare
SCENE
Subject distance 120 yd
20 yd (close)
500 yd (far)
LIGHT CONDITION
SIMULATE — toggle any combination
Illustrative simulation. Zoom crops the scene by magnification & distance; low-light dims per exit pupil & condition; shake amplitude tracks the stability score.
Decision Support
Personalized recommendations based on your trade-off priorities
Your Priorities
Portability
7
Handheld Stability
7
Low-Light Performance
6
Detail / Reach
6
QUICK PRESETS
TOP RECOMMENDATIONS FOR YOU
Fit score blends your priorities with optical performance. Click any card to load into explorer.
All Configurations (ranked by current fit)
Refresh ranking
Configuration Mag × D Exit Pupil FOV° Twilight Stability Portability Fit
Compare A / B
Send configs from the simulated view, then compare side by side (shared scene, distance & light). Greener value wins each row.
A Empty
B Empty
FOV model: 52° apparent field (typical quality monocular)
Stability: Empirical — higher mag amplifies hand tremor; larger objective adds minor inertial damping
Brightness: Standard formulas (exit pupil & twilight factor)
Simulated view: Illustrative — zoom, dimming & shake are perceptual approximations, not calibrated optics
All values are modeled estimates. Real-world performance varies with glass quality, coatings & user technique.