Quick Answer
Larger objective lenses in a monocular can increase light gathering capabilities, but the noticeable benefits for scouting may be limited beyond a certain point, typically around 42mm in diameter. Beyond this, the law of diminishing returns applies.
Benefits of Larger Objective Lenses
When choosing a monocular for scouting, one of the key factors to consider is the size of the objective lens. A larger lens can gather more light, allowing you to observe objects more clearly in low-light conditions. For example, a 42mm objective lens can gather up to 2.5 times more light than a 30mm lens, making it significantly easier to spot game at dawn or dusk.
Practical Considerations
However, while larger objective lenses can provide benefits, there are also practical considerations to keep in mind. Larger lenses can make the monocular more difficult to carry, especially for extended periods. Additionally, larger lenses can also increase the weight and cost of the monocular. For example, a high-quality monocular with a 56mm objective lens can weigh up to 30 ounces and cost over $1,000.
Evaluating the Need for Larger Lenses
To determine whether a larger objective lens is necessary for your scouting needs, consider the following factors: the type of terrain you will be observing, the amount of light available, and your personal preference for magnification power. If you will be observing in dense forests or during periods of low light, a larger objective lens may be beneficial. However, if you will be observing in open terrain or during periods of high light, a smaller lens may be sufficient.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.