PIXEL, HD, FULL HD,

1. Ancillary Service
S. Paheerathan 1
CCTV CAMERA SELECTION CRITERIA
 Image quality of the camera/ Image resolution of camera (HD/Full HD)
 Day & Night vision facility (infra-red)
 Wireless Camera or Wired Camera
 Viewing Angle of the camera / Focal length/ coverage area of the camera/ Range of the
camera
 Analog Camera / Digital Camera
 Indoor Camera / Outdoor Camera
 Weather proof body of the camera
 Compatibility with the existing system
Focal length & Focal point
Focal Length: - Distance between the lens and focal point.

2. Ancillary Service
S. Paheerathan 2
Focal length & Angle of View of CCTV camera

3. Ancillary Service
S. Paheerathan 3
Varifocal Camera
 It comes with adjustable lens
 Cameras focal length can be adjusted.
 It is expensive than fixed lens camera

CAMERA RESOLUTION
 What is Full HD?
Full HD refers to 1080p image resolution.
 What is HD Ready?
HD Ready refers to 720p
HD Ready/ Standard HD/ Half HD
 HD: 720p image resolution (1,280 x 720 pixels – approximately 1 million total pixels)
 Full HD: 1080p image resolution (1,920 x 1,080 pixels – approximately 2 million total
pixels)
 Ultra HD: 4K image resolution (3,840 x 2,160 pixels – approximately 8 million total
pixels)

4. Ancillary Service
S. Paheerathan 4
 Note: - p stands for pixel-the basic logical unit in digital graphics. Pixels are
combined to form a complete image, video, text or any visible thing on a
computer