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China TianYing ST1000 compact 4mp 14~1000mm optical zoom AI surveillance CCTV camera clearly reads license plates 2.2km, captures quite clear images and offers high reliability at an affordable price.

The camera includes multiple image enhancements, intelligent behavior analysis, intelligent detection alarms etc. Its precise control circuits adjust the rear focal length and specify focal lengths, combined with an image stabilization core that ensures stable quite clear images at a resolution of 2688 x 1520.

Its advanced features help users identify inaccurate or exaggerated claims. For example, while some zoom cameras advertise focal lengths of 1200mm to 2600mm with even 4K 2um core, their working distance is at most at the level of the 1000mm CCTV camera, and their image quality is lower than that of the ST1000 camera, including clarity, sharpness and brightness.

2.2km read the driving license plate security 4MP 14~1000mm zoom CCTV Camera specifications:

Question(August 2025 vision）:
1. Why can't normal telephoto CCTV cameras see humans at 10km, even with lenses like 1000mm or 1200mm?

The stated focal lengths are often exaggerated; a lens labeled as 1200mm may only have a true focal length of around 1000mm.

Adding a 2x extender does not guarantee clarity and effective doubling of the focal length, especially over long distances.

Clear, sharp images with high color saturation enhance discernment, but factors like fog in areas such as seas and jungles can hinder visibility.

Additionally, some cameras inflate their distance claims;  for example, a 2MP 2000mm camera marked 22km might realistically see humans only about 16km; a 2MP 1600mm camera marked 250km might realistically see humans only about 14km.

2. Why do some large pixel size cameras have greater working distances than smaller pixel size ones with the same real focal length and F#?

Camera quality is crucial;  an HD camera with a pixel size of 4.6um using a 1000mm lens can detect humans up to approximately 13km. 

If the lens quality isn't improved, higher resolution and smaller pixel sizes (e.g., an 8MP camera core at 2um) will still yield similar effective working distances.

3. Why might a 2MP camera produce better images than some higher resolution cameras (8MP or even 8K)?

A well-designed camera that no chromatic aberration produces clearer and sharper images with consistent high color saturation across all areas, including edges in telephoto shots.

4. Why are many CCTV surveillance cameras with focal lengths of 750mm/1000mm/1200mm only effective for laser rangefinding up to 3km-5km?

This limitation arises from misalignment between the optical axis and the target; even minor deviations can result in significant errors at longer distances (e.g., a 2 mrad accuracy leads to a 6m deviation at 3000m).

Consequently, these cameras str le to accurately capture vehicles beyond this range, so their laser rangefinder task is only roughly measurement.

Thus, claimed accuracies like 10km~40km LRF of 0.1m, 1m, or 10m lack meaningful real-world relevance.

5.  Why is the price of the 2MP camera much higher than that of a normal CCTV camera?

The 2MP camera features coaxial zoom, no chromatic aberration, rapid auto-focus, superior defogging, wide spectrum capabilities, shock resistance, compact size, and an ultra-long lifespan.

Its image quality can compete with some SLR cameras.

When considering price factors such as image quality x distance x accuracy, you'll find our pricing is very competitive.

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Updated in August 2025.