When it comes to video surveillance cameras, choosing the right lens is crucial for capturing clear and effective footage. In this guide, we’ll break down the differences between 2.8mm and 4mm lenses to help you determine the best fit for your needs.

What Does the Lens Size Mean?

The size of the camera lens, measured in millimeters (mm), determines the field of view (FOV) and how much of the scene the camera can capture. A smaller lens provides a wider FOV, whereas a larger lens offers a narrower FOV.

The 2.8mm Lens: Wide Coverage, Less Detail

With a 2.8mm lens, you get a wide field of view, typically around 110 degrees. This makes 2.8mm lenses perfect for broad coverage areas like parking lots, large retail spaces, and front yards. However, while a 2.8mm lens captures a broad scene, it offers less detail on distant objects. This lens is ideal when you need to monitor large spaces but don’t require detailed close-ups.

The 4mm Lens: Narrower View, More Detail

A 4mm lens provides a narrower field of view, usually around 75 to 85 degrees. This lens offers more detail at a greater distance, making it suitable for identifying faces or license plates. Choose a 4mm lens when you need to focus on specific areas like entrances, exits, or cash registers, where capturing detail is critical.

Choosing Between a 2.8mm and 4mm Lens

When choosing between a 2.8mm and 4mm lens, consider your surveillance needs. Do you need to cover a large area or focus on a specific location? Would you prefer more detail or a broader field of view? Answering these questions can help guide your decision.

St. Louis Alarm Co.: Your Partner in Security

Whether you need broad coverage or detailed surveillance, St. Louis Alarm Co. offers a variety of surveillance camera options, including both 2.8mm and 4mm lenses. Our team of experts can help you assess your needs and choose the perfect security solution for your home or business. Contact us today for more information.

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