A good technology decision starts with the real operational need. This guide outlines the important checks and tradeoffs relevant to equipment selection in Pakistan.
Understanding labels
2MP typically refers to roughly two million image pixels and is commonly associated with 1080p. 4K UHD has approximately 8.3 million pixels at 3840 by 2160. Labels such as 5MP do not specify every aspect ratio or sensor characteristic.
Higher resolution impacts the system
Higher resolution can help when enough pixels fall on the object of interest, but also increases potential stream bitrate, recorder decoding load and storage needs. Poor lens selection or motion blur can waste the benefit of more pixels.
Compare by identification distance
Define how far from the camera you need to read a sign or distinguish a person, and test the camera with real lighting. Recorder capability, cable infrastructure and monitoring displays are also part of the decision.
Questions and answers
Does 4K need a 4K DVR or NVR?
The recorder must support the selected camera format and input resolution; confirm its exact specifications.