How Do Mini Cameras Work?

Simply put, these mini cameras work just like a normal camera. If you don’t know how one works, we can help you and give you some basics.

This is how they work

A mini camera creates pictures like any other digital video camera. The lens invites light, focusing on a cluster of light detectors. 

Black-and-white surveillance cameras have light detectors that gauge how much light there is in a specific place within the image. These same detectors use a color camera to measure red, green, or blue light. Groups of three light detectors combine to display the color of light in a specific place. (1)

These individual detectors combine their powers and make a full picture for us to see. Some mini-cameras have motion detectors that allow them to stay dormant until motion is detected. 

There are also mini cameras with motors that allow them to follow movement in the room. Otherwise, the camera focuses on the same spot day in and day out.

Where Are the Images Stored? 

wireless signal icon

If the mini camera doesn’t have internal storage, it will have to send the video feed to a location wirelessly or through a wire. 

If it’s wirelessly, it happens like this: Small radio transmitter images are transformed into a radio signal to a receiver within its range. Which, most of the time, is one in the same building. 

The receiver does as its name indicates; it receives the signal and transforms it into images. 

How Long Can They Record?

camera lens

Suppose it’s based on energy supply; that matters if it’s a battery or needs to be plugged in. If it’s based on battery life, they can last as long as a few hours. But that changes if it’s about storage. 

If there is a mini sd card it stores on, it can cut the mini camera off from recording when the card is full. You can upgrade the mini sd card to a bigger memory and store more. 

There is also external storage, as was discussed with the radio transmitters. The mini cameras can also be hooked up to a wire to a device that keeps it charged and where its memory is stored. (2)

Some can store more and have longer times left to their charge if they are based on motion. So the mini camera only records when there is motion detected. That way, it only records the events that matter instead of the ones that don’t, such as how your sofa looks when no one is around. 

Spoiler alert! 

It doesn’t look interesting and doesn’t do much other than be a sofa—no point in recording it for long periods. 

Advancements in The Mini Camera Space

Mini cameras are getting smaller and smaller. We are witnessing a number of advancements in the mini-camera space.

The first advancement is the introduction of tiny, high-quality, and inexpensive cameras for smartphones. This has allowed people to take better pictures with their phones because they don’t need to carry around a bulky camera anymore.

The second advancement is the introduction of drones that can be controlled by smartphones. Now people can capture professional-quality video without having to carry around a heavy drone or expensive camera equipment.

The third advancement is the development of miniaturized 360-degree cameras that can be mounted on drones or placed in extreme environments like underwater or outer space. These cameras allow us to see things from new perspectives and offer new opportunities for storytelling.

It depends on your location, but you need consent to record sound or video in some places. Some places allow you to do video but not sound. 

It all depends on the laws you will have to research because there are many different nuances in the law, and you should be familiar with what those are for your location. 

However, most locations will not allow you to film where there is an assumed right to privacy. Those locations are bathrooms, restrooms, and bedrooms. 

Hotels have security cameras, but those cameras are in public areas such as hallways, swimming areas, and the front desk. They are not located in bedrooms and restrooms. This would be the same with anyone that runs an Airbnb. 

Just because it’s your home doesn’t mean you get to record anywhere. Legally you could get into lots of hot water. 

And since you already know how this mini camera works, you may want to check how to hide a mini spy camera in your home and office! And you can also check the detailed Blink Mini-Review we’ve made! Until next time!


(1) light detectors –
(2) transmitters –

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