So, what exactly is the objective lens diameter of a rifle scope? Well, it's pretty straightforward. The objective lens is the large lens at the end of the scope that faces the target. Its diameter is measured …

Aug 22, 2023 · What Exactly Is an Objective Lens Diameter? The diameter of the objective lens is a measurement of how long a line is from one edge of the lens to the other when it has to pass through …

Oct 3, 2023 · Tips to choosing the right objective lens diameter for your next rifle scope. Plus, the answer to that age-old question 'Does Size Matter'?

Jun 13, 2025 · A complete scope objective lens chart to help you decide what objective lens size is best for your scope. Explore the best objective lens size for LPVOs, HPVOs, hunting scopes and …

This article will walk you through The Significance of Objective Lens Diameter in Rifle Scopes Explained, breaking down the trade-offs and helping you determine the right size for your specific application.

Dec 13, 2025 · That “42” is the objective lens diameter. It’s a quick way to guess how bright a model might be. Getting this measurement right matters. Lens diameter decides exposure, light …

Nov 27, 2024 · Explore how the size of the objective lens affects the performance of rifle scopes, including light gathering, image clarity, and shooting precision.

Aug 20, 2025 · Magnification and objective lens size are almost always written in the same format: The first number (or range of numbers) is the magnification. The second number is the diameter of the …

Jan 16, 2025 · The last number in a rifle scope or the number after the "x," such as the 40 in 3-9x40, refers to the objective lens diameter in millimeters. A larger objective lens allows more light into the …

The scope's objective lens size is measured as a diameter, which controls how much light it can gather. The bigger the objective lens diameter the better the light transmission, which also results in better …