China TianYing ST750 compact 4mp 12.5~750mm optical zoom AI surveillance CCTV camera effectively detects humans 12km, captures 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 appropriate 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 860mm to 1200mm with 4K 2um core, their images captured from distances of 30km often lack detail when targeting mountains, the effect is at most at the level of the 750mm CCTV camera.
12km man security surveillance AI 4MP 12.5~750mm zoom NIR CCTV Camera specifications:
Model
ST750
Performance
Efffective detection range
Typical 12km for human, can be beyond 14km and even up to 17km
Typical 22km and even 30km for 6m x 3m vehicle/boat
Recognition range
Approx 7km for human
Approx15km for 6m x 3m vehicle/boat
Identify the person's face
Approx 1.6km, even 1.7km
Read the driving license plate
Approx 1.6km, even 1.7km
Camera
Image Sensor
1/1.8 inch (2.9 microns) CMOS, 4MP 2688X1520
Min. Illumination
Color: 0.0005Lux; B/W: 0.0001Lux;
Electronic delayed shutter
Suporrt
Frame Rate
50Hz/60Hz.
Signal to noise ratio
≥55dB (AGC OFF)
Day/Night Switch
Automatic ICR filter switching
Optics
Wavelength range
400nm ~ 950nm (0.4~0.95μm):
0.4~0.7μm visible,
0.7~0.95μm NIR,
Field of View °
35.7° x 20.2° ~ 0.59° x 0.33°
Focal Length
12.5mm~750mm continuous optical zoom.
Aperture
F11
Close-up distance, m
Approx 5m (can be 1m)
Focus
Auto, manual
Image
Image Settings
Brightness, contrast, saturation, sharpness, chroma, adjustable via browser
ONVIF/GB28181 protocol, support SDK and third-party platform access
Compatible browser
Explorer 6 or later
Storage function
Micro SD/SDHC /SDXC card (256 GB), Disconnected local storage, NAS(NFS,SMB, and CIFS) supported
Remote monitoring
support mobile APP remote view real-time picture, playback video, receive alarm information
Input / Output
Power supply
DC 12V, max 10W.
Video output
HDMI/SDI/CVBS/RJ45 are output at the same time
Audio interface
1 x 3.5mm JACK audio input, 1 x 3.5mm JACK audio output
Alarm interface
2 x alarm input, 2 x alarm output
Control interface
1pc RS485, 1pc RS232
Environmental Adaptability
Operating Temperature
-40°C to +60°C,
Working humidity
≤ 95%
Physical
Dimensions
Approx 3100 cubic centimeters with house
Weight with house
≤ 3kg
Packing and Warranty
Standarding accessories packing
hard case, user's manual,video cable, power cable
Warranty
1 year warranty and free lifetime maintenance.
Note: *- Technical information is subject to change without notice. ** -Depending on the region of sale. *** - Option add normal house and sealing house.
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 civil safe 2MP 2000mm camera marked 22km might realistically see humans only about 16km; a civil safe 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 struggle 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.
If you need to cite this information, please mention our company and website.
Updated in August 2025.
Because the camera is coaxial zoom with no chromatic aberration, rapid auto, supper defog, wide spectrum, shockproof, compact size and ultra-long life, also image quality can compete with some SLR camera.
12km+ Surveillance 4MP 12.5~750mm zoom spotter NIR CCTV Camerasee 22km cable car with big FOV
12km+ Surveillance 4MP 12.5~750mm zoom spotter NIR CCTV Camera see 22km cable car with small FOV
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12km+ Surveillance 2MP 12.5~750mm zoom spotter NIR CCTV Camera see man effect with defog
4mp 12.5~750mm zoom spotter NIR CCTV camera see 1km house -1
12km man 4mp 12.5~750mm zoom spotter NIR CCTV camera see 1km house - 2
12km man 4mp 12.5~750mm zoom spotter NIR CCTV camera see 1km house - 3
4mp 12.5~750mm zoom spotter NIR CCTV camera see 22km cable car at color in cloudy conditions
4MP 12.5~750mm zoom spotter NIR CCTV camera see 22km cable car with defog in cloudy conditions
ST750 12km man surveillance 2MP 12.5~750mm zoom CCTV Camera effect
HD800 2MP 12.5mm~800mm coaxial zoom no chromatic aberration NIR CCTV camera see 40km lighthouse(42km) on the islands, we have done simultaneous field tests, many 1000mm and 1200mm focal length lens plus 2x extender CCTV cameras can not see this island with the disance, including famous brands, then do not mention the lighthouse too, only their price is cheap.
