Analyze light transmission efficiency between geometric aperture (F-stop) and measured transmission (T-stop) with precision.
Quick Presets (F-Stop)
Transmission loss occurs due to light absorption and reflection within the lens elements. T-stops provide a true measurement of light reaching the sensor, ensuring consistent exposure across different lenses.
Efficiency Rating
Note: T-stop is smaller than F-stop. This indicates a mathematical anomaly or an impossible optical scenario.