PTZ cameras: when a camera that moves is worth it, and when it is a trap
By Namra Shah · Cabling For U · Auckland · Updated September 2026
A PTZ camera pans, tilts and zooms. It can cover a huge area and, with 25x or 32x optical zoom, pick out detail at a distance no fixed camera will reach. It is also the camera type we most often talk people out of, because there is one flaw that brochures never mention.
Short answer: a PTZ is only ever pointing one way. Whatever it is not looking at, it is not recording. For a site with someone actively watching, or where automatic tracking is set up properly, it is superb. For an unattended home, fixed cameras that always see everything are almost always the better buy.
The flaw worth understanding first
People picture a PTZ as covering everything because it can point anywhere. In practice it records only where it happens to be aimed at that moment. If it is zoomed into the back fence when someone walks up the drive, there is no footage of the drive. None. The camera was busy.
Fixed cameras have a narrower view each, but they are all looking, all the time. For after-the-fact evidence — which is what most residential CCTV is actually for — that is worth more than the ability to zoom.
What TandemVu changes
This is the genuinely interesting development, and it directly addresses the flaw above. A TandemVu-style unit puts two cameras in one housing: a fixed wide camera that never moves, and a PTZ that does.
The fixed one records the whole scene continuously. The zoom one follows whatever is moving. You get the overview and the detail at the same time, from one mounting point and one cable. That removes the “it was pointing the wrong way” problem that makes ordinary PTZs risky on unattended sites.
The unit in our range pairs a 4MP fixed camera with a 4MP PTZ on 32x optical zoom, with infrared reaching 30 metres on the wide and 150 metres on the zoom. That long-range figure is what a fixed camera cannot match.
Not sure which of these applies to your place? That is what our CCTV installation Auckland service is for. We walk the property, plan the camera positions with you, and email a fixed price within 24 hours — no charge, no obligation. Book a free site walk.
Optical zoom is the whole point
Worth being clear about the difference. Digital zoom crops the image and enlarges pixels — you see a bigger, blurrier version of what was already there. Optical zoom physically moves the lens, so you gather genuinely new detail.
That is why a PTZ can read something at 100 metres that a 4K fixed camera cannot resolve at all. You are not stretching pixels, you are collecting more of them on the subject.
Where a PTZ earns its place
- Large sites with a person watching. A gatehouse, a control room, a yard with staff. Someone driving the camera is what unlocks it.
- Auto-tracking on a defined area. A yard where nothing should move after hours — the camera locks on and follows.
- Very long distances. 150 metres of infrared and 32x zoom cover ground no fixed camera reaches.
- Large rural properties. One mast-mounted PTZ can watch a paddock, a shed and a gate that would otherwise take several cameras and several cable runs.
- Alongside fixed cameras, as the detail layer on a system that already has its coverage sorted.
Where it is a trap
As the only camera on a house. This is the classic mistake. A single PTZ on an unattended property will be pointing the wrong way at the worst possible moment.
Small sites. If the whole property fits in two fixed cameras, a PTZ adds cost and moving parts for no gain.
Where nobody will ever drive it. If it will sit on a preset forever, you have bought an expensive fixed camera with a motor that can fail.
As a replacement for coverage. A PTZ supplements fixed cameras. It does not substitute for them.
The bits people forget
Moving parts wear out. Motors, gears and slip rings have a service life that a fixed camera simply does not have. On a PTZ running patrols all day, that life is shorter.
Power draw is higher. Motors and long-range infrared need more than standard PoE in some cases. Worth checking your switch can deliver it before ordering.
Preset drift. Over months, mechanical presets can wander slightly off. Occasional recalibration is normal maintenance, not a fault.
Auto-tracking needs tuning. Out of the box it will chase trees, shadows and cats. Getting it to follow only what matters is setup work, and it is the difference between a useful camera and a distracting one.
Three questions worth asking your installer
- Who is going to drive this camera? If the honest answer is nobody, look at fixed cameras or a TandemVu-style unit instead.
- What happens to the rest of the site while it is zoomed in? If the answer is “nothing is recorded”, that is your risk in one sentence.
- Does my switch deliver enough power for it? Cheaper to know now.
We will usually suggest fixed cameras first
We walk the site, work out whether you need coverage or reach, and email a fixed price within 24 hours. If a PTZ is the right call we will say so, and if it is an expensive way to watch the wrong thing we will say that too. Every install is Fluke-tested, configured with your own passwords rather than factory defaults, and carries our 12-month workmanship warranty.
Book a free site walk or call 0800 222 546.
The models we fit
Two units cover almost every PTZ job we quote in Auckland. The TandemVu is the one we recommend far more often, because it keeps a fixed wide view recording while the PTZ half does the moving.
| Model | What it is | Resolution | Where we fit it |
|---|---|---|---|
| DS-2SE7C432IWG-4G/14(F0) | TandemVu PTZ — fixed wide camera and a PTZ in one housing | 4MP fixed + 4MP PTZ | Yards, lots and sites where you want zoom without losing the wide view |
| DS-2DE5425IWG-4G | 4G/LTE PTZ camera | 4MP | Remote or temporary sites with no fixed internet |
Neither is a substitute for fixed cameras on an unattended home.
Full list on our Hikvision camera range page.
Related reading
- The Hikvision camera range we install from — every model and what it is for
- 180° panoramic cameras: covering a whole frontage
- 4G cameras: security where there is no internet on site
- Bullet, turret, dome or fisheye: which shape belongs where
Frequently asked
Can a PTZ replace several fixed cameras?
Only if someone is watching it or auto-tracking is properly tuned. Unattended, it records one direction at a time and misses everything else. For evidence after an incident, fixed cameras win.
What does auto-tracking actually do?
The camera detects movement and follows it, zooming as it goes. Set up well on a quiet site it is impressive. Set up badly it chases branches all night and you end up disabling it. The tuning is the job.
Is 32x zoom useful on a house?
Rarely. At residential distances you are zoomed past everything you care about within a fraction of the range. Long zoom is for paddocks, yards and boundaries — not a suburban section.
Do PTZ cameras fail more often?
They have moving parts, so there is more to wear out than on a fixed camera. Well made and not run on constant patrol, they last well — but a fixed camera has no motor to fail, and that is a real difference over ten years.
What is TandemVu?
Two cameras in one unit: a fixed wide camera that always records the whole scene, and a PTZ that zooms and follows. It fixes the main weakness of a traditional PTZ, which is that it only ever sees one thing at a time.
What are the disadvantages of PTZ cameras?
It only ever points one way, so whatever it is not aimed at is not being recorded. It has moving parts that wear. And it costs several times what a fixed camera does. For an unattended home that is a poor trade.
What is the best PTZ security camera for home use?
For most homes, none of them — fixed cameras that always see everything give better evidence for less money. Where a PTZ does make sense, a TandemVu-style unit is the one we recommend, because a fixed wide camera keeps recording while the PTZ half moves.
Who wrote this
Namra Shah installs CCTV and structured cabling across Auckland through Cabling For U. PSPLA Company Licence 25-132031 (Security Technician), SiteSafe Passport holder, Impac pre-qualified, $5M public liability. Cabling For U is a trading name of HARIKRUPA LIMITED, NZBN 9429046975126, incorporated 22 August 2018. Every install carries a 12-month workmanship warranty and Fluke-tested cabling.
The models named on this page are ones we hold accounts for and fit on Auckland jobs. If you want one specced for your property, ask for a free site walk.