Meta title: Things to Know Before Buying a CCTV Camera (2026 Guide)

Meta description: What are some things to know before buying a CCTV camera in Singapore? Read this complete guide to understand all you need to know about CCTV camera systems!

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Things to Know Before Buying a CCTV Camera

Over the last few years, CCTV camera systems have become the most common form of surveillance. Consequently, millions of CCTV cameras have continued to be installed in businesses, residences, and even in streets across the globe.

According to a recent news article, the global surveillance market is estimated to hit $130.08 billion by the end of 2022.

Among the reasons more businesses, governments, and individuals are investing in CCTV camera systems is the need to monitor and prevent crime. Besides, CCTV footage is admissible in court as evidence of crime.

Modern CCTV camera systems offer a whole range of features that include motion detection, high storage capacity, high-resolution images and videos, remote accessibility, and so on.

In this article, we break down the nitty-gritty of what features you should consider before investing in a CCTV surveillance system.

Before investing in any CCTV camera system, you need to consider a few important aspects.

Internal Memory Card, DVR, NVR or Cloud150

Proper storage of your CCTV camera footage is a critical part of the surveillance system. As we see a shift from analogue to digital IP surveillance cameras with multiple-megapixel range, so does storage and costs increase. You can choose to store your CCTV files onsite or offsite.

Onsite storage is probably the easiest and most common option. You can store your CCTV data in removable storage, external storage (DVRs and NVR), or choose cameras with built-in storage.

Traditional digital video recorders (DVRs) are a storage option found in analogue CCTV cameras. DVRs have one or multiple hard drives that record CCTV footage and are connected directly with your CCTV cameras using cables. The downside of this storage option is that the storage is not scalable, so you will have to get additional storage or upgrade your surveillance system sooner or later.

On the other hand, NVR systems are used in Internet Protocol (IP) cameras and are more scalable compared to the conventional DVR cameras. NVRs can also record input from other digital recorders and video servers. Data stored on NVRs can be stored in the cloud, thus allowing for remote access.

Pan/Tilt

Would you rather a CCTV camera that is fixated to one view or one that can swivel around? If you need to focus on a particular section such as an entrance or a parking lot, a fixed camera will do. However, a Pan-Tilt-Zoom (PTZ) camera would be ideal if you intend to cover a wide area.

Pan refers to the maximum horizontal area a CCTV camera can cover while a tilt is the vertical area. The zoom feature helps you focus on specifics such as license plates or faces in real time.

The primary advantage of PTZ over fixed-view CCTV cameras is that you can re-aim their field of view from the recorder or through an app on your smartphone, tablet, or computer. However, you will need to purchase a control panel separately.

As PTZ cameras offer more flexibility in monitoring your property, they are often pricier compared to their fixed counterparts.

Image Resolution

Image resolution refers to the number of pixels that make an image from its width and height. For example, a CCTV camera with 2MP resolution will produce images whose height and width are 1080 and 1920, respectively. Multiplying these two gives you 2,073,600 megapixels.

Other CCTV camera resolutions in the market are 1MP, 4MP, 5MP, and 8MP. The higher the resolution, the better the quality of the footage or images that a CCTV camera captures.

In addition to the resolution, you will also need to factor in a CCTV camera’s frame rate. Commonly referred to as FPS (frames per second), this refers to the number of images a camera produces each second. A CCTV camera with a higher fps will cost you more but will give you images with a better resolution. 8MP or 4K cameras have the highest fps of 30.

Type of Camera

The CCTV systems market is flooded with different cameras that suit different situations. Some of the most common types of CCTV camera are:

Analog CCTV cameras – these are wired security cameras that are connected to a DVR. Such are ideal if you want a basic surveillance system where you store data from your CCTV cameras on site.
IP camera – this type of surveillance cameras does not need a recording device. Rather, it transmits live footage through its IP address. Footage is stored on an NVR recorder or a secure software. IP cameras are ideal for people who want to view what’s happening in their business premises or residence remotely.
Dome cameras – these get their name from the dome-shape of the camera’s casing. Because of their shape, they easily blend in with the surroundings. They are ideal for indoor settings as they give you a 360-degree view.
Day/night vision cameras – these cameras capture clear images irrespective of the lighting. Night vision cameras are equipped with infrared light which allows them to work perfectly even in low light.
Thermal cameras – these are ideal for places where there are high pressure systems. They work by converting the heat from an object to a visible image.

Camera Lens

There are several features that define a CCTV camera’s lens. They include:

Field of vision and focal length – the latter refers to a camera’s viewable range while the former is the distance of focus. Cameras with a wide viewable range have a small focal point and vice versa. For instance, a camera with a 4mm lens will display a clearer scene, but the image will be smaller compared to the same scene from a 2.8mm camera.
Monofocal and varifocal lenses – monofocal lenses can only focus on scenes or images at a particular distance. You can adjust the varifocal lenses to focus on a certain vision range either manually or automatically by using cameras with zoom lenses.
Aperture – this is where light passes to get into the camera thus affecting its depth of field, and its size is measured in f-stops. A camera with a narrow aperture and whose f-stop number is high is clearer compared to a camera with a wide aperture.
Iris – this influences the amount of light passing through the aperture. There are two basic types of irises: manual and automatic. Cameras with manual iris lenses are ideal for indoor settings where there are little lighting variances. Conversely, cameras with auto iris lenses are ideal for settings where the lighting fluctuates.

Motion and Audio Sensor

The sensor is the part of a CCTV camera that captures the image. CCTV camera sensors are CMOS or CCD. While cameras with CMOS sensors are less expensive, they have less clear images compared to CCD. However, the latter uses more power.

The sensor’s size will also influence the camera’s image output. A CCTV camera with a large sensor will capture lighter images with more detail compared to one with a smaller sensor. The dimensions of most CCTV camera sensors is either ¼ inch (3.2 mm x 2.4 mm) or ⅓ inch (4.8 mm x 3.6 mm).

Modern CCTV cameras have motion sensors whose motion tracking abilities can be used alongside trigger alarms. Other advanced cameras have audio transducers that allow you to record motion and voice simultaneously. However, cameras that have both functionalities will require that you have adequate storage.

Type of Wiring

Do you choose a wired or a wireless CCTV system? Either is a good option depending on your specific circumstances.

Wired systems are hard-wired to a power source and sometimes, to the internet connection. This option is the most reliable as there are fewer issues resulting from dropped signals because of poor internet. However, you will have to involve a professional during their installation. Also, a blackout means your camera will not record any footage.

Wireless cameras only need to be connected to a power source, thus making them easier to install as they require fewer cords. The operation of a wireless camera is interrupted by power outages. If you have connectivity issues or if a different signal interferes with your Wi-Fi, your camera’s operation will be affected.

Wire-free cameras are a variation of wireless systems. They can be mounted anywhere and as they do not require any cords; they are rather easy to install. On the downside, they are the easiest to steal. Besides, their batteries need to be recharged every now and then.

Waterproof capability

If you are installing your surveillance system in an outdoor setting, you need to look out for a waterproof feature in your CCTV cameras. Waterproof cameras are sturdily built, making them provide you with consistent surveillance feed even in extreme weather.

Most outdoor cameras claim they are waterproof, weatherproof or weather resistant. To determine whether the camera will stand up to the temperature and weather in your area, look out for its IP rating which is represented by two numbers.

The first digit is the level of protection against solids and it ranges from zero to six as below:

0 – zero protection

1 – protection against particles that are 50 mm or larger

2 – protection against particles that are 12.5 mm or larger

3 – protection against particles that are 2.5 mm or larger

4 – protection against particles that are 1 mm or larger

5 – protection against dust particles

6 – full protection

The second digit ranges from zero to eight and refers to the level of protection against liquids as follows:

0 – zero protection

1 – safe from water dripping vertically

2 – safe from water dripping vertically and when the camera is tilted to an angle not more than 15⁰

3 – safe from water sprayed at an angle not exceeding 60⁰

4 – safe from water splashed from any side

5 – safe from water from a nozzle

6 – safe from water from a water jet

7 – camera can be immersed into not more than 1 meter of water

8 – camera can be immersed fully into water

Going by the above, a camera whose IP rating is IP68 is the best quality for extreme outdoor conditions.

Range of the Camera

How far will the CCTV camera see? What’s the farthest range will it be able to detect a person or an object?

Knowing the range a camera will cover is important as you will choose one that offers you the clarity you require as well as eliminate any blind spots. Apart from factors such as the size of the lenses and the camera’s resolution (discussed above), other factors that will determine the range of view are:

Installation location – the farther the camera is mounted from the monitoring spot, the more difficult it will be to observe the images it captures, unless you choose higher lens sizes.
The quality of the camera – a good camera will have the right processor, sensor, and IR light. Besides, cameras from popular brands not only have a manufacturer’s warranty but also get frequent firmware updates.

If possible, have a local professional such as Web Security System visit the site and advise you on where the cameras should be installed.

Night Vision

Night vision cameras are perfect for the outdoors especially in the absence of outdoor or motion-sensor lighting. You can also install them in your car to deter car and auto-part thefts. Night vision cameras come in handy when you want to keep an eye (and an ear) on a sleeping baby.

Most modern surveillance systems have night vision capabilities. This makes them effective for both day and night use. Such cameras automatically switch from day-mode to night-mode when the amount of light drops to a specific level.

The most common type of technology used in night vision CCTV cameras is infrared. The infrared bulbs are built into the camera’s lenses enabling them to create an image where there is little or no light at all. If you want good night vision images, choose a camera with a large sensor.

Conclusion

A lot goes into buying a CCTV camera system whether it’s for your home or business. You will need to understand such features as image resolution, range of coverage, integration capabilities, sensors, lenses, night vision capabilities, and so on.

If you are in the market for a surveillance system that suits your needs, get in touch with us today. Our experts are ready to address any questions you might have and advise on the best option depending on your requirements.

Process of a CCTV camera system being installed–.

Things to Know Before Buying a CCTV Camera (2026 Guide)