One of the most common questions we get asked is, what is the difference between IP and Analog? Both these cameras include positive and negative aspects, it just depends on their purpose and your budget.What is an IP Camera?
An Internet Protocol camera, commonly known as an IP camera, is a type of digital video camera generally employed for surveillance. Unlike analogue closed-circuit television (CCTV) cameras, IP cameras can send and receive data via a computer network and the Internet. IP cameras connect to NVR�s and can even be powered by the NVR itself through PoE technologies.
Older systems from 10+ years ago will more than likely be analogue systems, and have resolutions below around 0.5 megapixel. In these cases, it is common to replace the analogue camera/DVR with the latest analogue technologies which offer high resolutions.. Because both the new and old analogue technologies use coaxial cabling the retrofit can be quick and straight forward.
The easiest way is to look at the back of the DVR/NVR. If you see lots of coaxial cabling then it is most likely analogue. If you see lots of network cable then it is most likely an NVR.
If you are still unsure you are more than welcome to contact us on 07 3255 6600.
Each technology provides a different level of resolution, performance and cabling requirements.
IP stands for Internet Protocol, and basically refers to a digital video camera that can send and receive data via a computer network, as opposed to sending a video feed directly to a Digital Video Recorder (DVR). There are many positives to this technology:
High Definition Transport Video Interface (HDTVI): Was designed to fill a market gap, there are a lot of analogue systems using coax cabling still in operation. HDTVI is able to utilise this cabling and significantly reduce cabling costs. Resolutions have been increasing every year and in 2018 reached 5MP.
There are some cameras which have an analogue output however they would be at a low resolution. If you require the high-resolution image then you will need to purchase a HDTVI DVR.
Most common HDTVI DVRs can record from both analogue and analogue HDTVI cameras.
If you are thinking of making the switch from analog to IP cameras there are a few things to consider. The initial cost is certainly substantial, but it is important to note that a single IP camera replace three or four comparable analog cameras due to the increased coverage area. Additionally, switches allow the connection of more cameras per NVR than you would be able to connect to a DVR. It is also important to remember: separate power sources aren't necessary for IP cameras if you use a POE switch.
If you are looking into setting up a new surveillance and security system and would like some advice, please give us a call to discuss your options or fill out our contact us form.
There are 5 main body types each with their advantages and disadvantages. These include; Dome, Turret, Full Body, Bullet and PTZ
The dome camera is one most commonly used for indoor security and surveillance. The shape of the camera makes it difficult for onlookers to tell which way the camera is facing from a distance, which is a strong piece of design, deterring criminals by creating an air of uncertainty.
Unlike a dome camera there is often no glass or plastic cover covering the lens or IR illuminators. Although this may reduce vandal resistance it does however increase night vision capabilities dues to a reduced level of IR reflection.
A bullet camera is generally used in outdoor or in warehouse applications. Bullets will traditionally be used where they are out of reach and require higher levels of IR illumination (Some cameras reach 120m at night!)
Rarely used in today�s environment however there are still some scenarios where these would be used. Full Body cameras allow a variety of lenses depending on the customer�s requirements. Fully body cameras can also be combined with an external IR illuminator that can reach incredible distances.
Pan Tilt Zoom cameras commonly known as PTZ cameras have full movement and zoom capabilities. Common in city safe and high security environments, PTZs can be controlled via a joystick, phone, or computer. PTZ cameras can be configured to follow a predefined path and with the use of video analytics can track objects or movement in a large area.
In a typical CCTV system, there will be at least one camera and one Digital Video Recorder (DVR) / Network Video Recorder (NVR).
The purpose of the DVR/NVR is to record the cameras footage onto a large capacity hard drive.
The purpose of the camera is to send the footage to the DVR/NVR which will record the footage for playback later.
In some situations, there won’t be a need for a DVR/NVR, simply insert an SD Card into a supported camera and you can playback and extract footage from anywhere in the world.
In most situations, the Camera and Network Video Recorder (NVR) / Digital Video Recorder (DVR) will be connected to your buildings modem. This allows the NVR / DVR to access the internet; from here, the customer’s phone or other device can access the live feed, recorded video as well as export any required video.
The Hik-Connect Cloud Service emerged quickly as the safest and most powerful means for networked operation of Hikvision systems. While it is not required for Hikvision products, users are finding it to be the best for cybersecurity, reliability, power, and convenience.
The amount of megapixels required is often misunderstood. If the target is close by, a 2MP camera will be just fine.
As the target moves further away, the more megapixels will be required to capture an identifying picture. However, even though a camera may have 8MP of resolution, that does not mean that it is better than a 2MP camera.
Whilst megapixels are very important, several other important factors need to be taken into consideration.
In fact, many of the more expensive cameras in the market are still 2MP, this is due to more focus being placed on other areas of the camera.
When positioning a camera you must identify what areas you need to be in high resolution, and what areas are not as important to focus on. As the target area is moved away from the camera the more important this becomes.
There are great examples online which demonstrate this positioning change, a quick YouTube search will find you many examples.
2MP vs 5MP vs 8MP Comparison Video https://www.youtube.com/watch?v=kjUa0UjZBYQ
The lens strength is measured in terms of millimetres. The smaller the millimetre value the wider the FOV (Field of Vision). For example, the DS-2CD2355FWD-I camera comes in 2.8, 4, 6, 8, 12mm options. The 2.8mm lens has a Field Of View (FOV) of 97 degrees whereas the 12mm lens has FOV of 19 degrees.
This is important when thinking about the placement of the camera and what you want it to be looking at.
Also, be aware that as you move up in mm the camera lens will also zoom in as well.
Most popular are the 2.8 or 4mm lens, these offer a decent wide angle FOV and are a safer choice then the 6 – 12mm lens options.
With each generation of camera, the FOV changes from model to model. Typically, though a 2.8mm lens will have a FOV of around 90 degrees and a 4mm will have a FOV of 75 degrees.
If you are not sure what lens you require there feel free to give us a call or test out a online lens calculators.
Lens Comparison Video: https://www.youtube.com/watch?v=sZKWzyq6QYo
We have found that wasps and spiders like to make the outside of the camera a home, this is because spiders are attracted to the IR (infrared) that many of our cameras have. These critters can also be responsible for a reduced retention period on the hard drive because they are causing constant motion detection.
When cleaning cameras it is always important to use water and a microfibre cloth, as any other cloth may scratch the camera. Before using the cloth make sure the camera dome is fully rinsed and you are not moving hard mud across the dome, which again may cause the dome to scratch permanently.
The above recommendations applies to a business however, hiring a professional to service the system is advised. There may be issues that the above may not cover and the last thing anyone wants is a system that is not operational when a business needs it most.
Please get in contact us if you require a maintenance check on your CCTV System.
PH: 07 3255 6600