Does waterproof AHD camera work at night?

Introduction

AHD (Analog High Definition) cameras are a popular solution for surveillance, especially in analog systems. They are used in areas requiring high-quality images, such as parking lots, stores, public buildings, and vehicles. One important question regarding these cameras is their effectiveness at night. Can a waterproof AHD camera provide clear images in the dark? The answer to this question can be found later in this article.

History of AHD cameras

AHD technology was developed in 2014 by Nextchip as an alternative to traditional analog cameras. Its goal was to provide high-quality images without having to replace the entire cabling system with digital. This enabled the transmission of HD and Full HD images using standard coaxial cables, significantly reducing the costs of upgrading surveillance systems.

AHD technology and its applications

AHD cameras operate by transmitting a high-resolution analog signal. This allows for image quality of 720p, 1080p, and even 4K. They are primarily used in:

• City monitoring

• Building protection systems

• Industrial installations

• Car monitoring

Does the AHD camera work at night?

AHD cameras are designed to operate in a variety of lighting conditions, including at night. Their effectiveness depends on several factors:

• Presence of infrared (IR) diodes

• Sensor sensitivity to light (Lux)

• The presence of WDR (Wide Dynamic Range) technology

• Lens and IR-Cut filter quality

The table below compares different security camera technologies in terms of their effectiveness at night.

Factors affecting the quality of night recordings

Factor	Description	Impact on nighttime quality
IR diode	Emits infrared light, improving visibility in the dark	Tall
Matrix sensitivity	Defined in Lux, the lower the value the better	Medium to high
WDR	Improves image quality in contrast conditions	Mediocre
IR-Cut	A filter that improves color reproduction during the day and at night.	Tall

Comparison of AHD cameras with other technologies

Technology	Image quality	Effectiveness at night	Cost
AHD	HD, Full HD, 4K	All right	Mediocre
IP	Full HD, 4K	Very good	Tall
TVI	HD, Full HD	All right	Mediocre
CVI	HD, Full HD	Mean	Mediocre

Advantages of waterproof AHD cameras

Waterproof AHD cameras offer many benefits, including:

• Can be installed outdoors without worrying about weather conditions

• Effective protection against rain, snow and dust

• Resistance to variable temperatures

• High image quality both day and night

Summary

AHD cameras are an effective and cost-effective surveillance solution that provides high-quality images both day and night. Infrared technology and other features, such as WDR and IR-Cut, enable clear recordings even in low-light conditions. Additionally, their waterproof nature makes them suitable for outdoor use, ensuring stable operation even in challenging weather conditions. If you're looking for a nighttime surveillance camera, an AHD camera may be a good choice.