The key difference here was pixel size. Both phones had the same size sensor to pack all those pixels onto, so each pixel on the 16MP phone had to be smaller. The 16MP S6 had a 1.12µm pixel size

5MP & 6MP. 2560×1920 and 3072 x 2048. 4K (Ultra HD) 8MP. 3840×2160. [product_loop featured="front-page"] Here at Jim’s Security we have a wide range of CCTV packages starting at $1495 and offer professional installation of customer supplied CCTV systems from just $150 per camera. To find out more, visit our CCTV & Camera Systems page.

The reliance on cables also means an analog system is more likely to struggle in terms of distance. Most cameras can only achieve a maximum transmission distance of 300 meters over coax cable or 1.5km over twisted-pair cables. IP cameras have a far greater reach and can transmit information wirelessly through an IP network.

3.6 mm Lens. The 3.6mm lens produces a scene that is identical to the 2.8mm lens. But they show more detail at a greater distance. The most noticeable change is the narrower field of vision. This gives the impression that objects are much closer to the camera. Its field of view is approximately 78 degrees.
Remember that those are expressed as fractions so a 1/1.8" sensor is larger than a 1/2.8" sensor, The "sweet spots" are a 1/2.8" sensor on a 2MP camera and 1/1.8" sensor on a 4MP camera. An 8MP camera needs a 1/1.1" sensor, minimum, to produce a decent video, with motion, at night. LPR is actually an art and there's a whole thread on it here.
A 2MP camera produces images that are 1920 pixels wide by 1080 pixels tall, equaling 2,073,600 pixels per image. The move up from one standard size to the next roughly doubles the resolution compared to the previous size: 4MP: 2560x1440 = 3,686,400 pixels. 5MP: 2560x1920 = 5,017,600 pixels. Is 2MP better than 1080p? Introduction. Arducam has released a legendary camera solution (Arducam mega) helps you connect one or more cameras to any Microcontroller without or the least effort. The advent of the mega makes it possible to use a high-definition camera on a simple controller. Arducam mega just use the SPI interface which is the fastest of low-speed 2KhuDB.
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    • difference between 2mp and 5mp camera