Updated September 16, 2026.
If you're shopping for bullet surveillance cameras, you probably already know the basics: they're the long, cylindrical, "points at a thing" security cameras that dominate outdoor deployments. What's harder to figure out from a spec sheet is which numbers actually matter, where these cameras fail in practice, and how to avoid buying six of the wrong thing.
This guide walks through what a bullet camera is good at, the specs worth comparing, how onboard AI changes what you get out of a system, and the placement mistakes that turn a good camera into an expensive blinky light.
What Bullet Surveillance Cameras Are Good For
Bullet cameras use an elongated housing that can be convenient for directional outdoor coverage. Avigilon’s bullet-camera overview describes its product range and intended uses. Choose the actual lens, field of view and environmental rating first: housing shape alone does not determine range, image quality or suitability indoors.
Two other characteristics matter:
- They're directional and obvious. That visibility can be part of the deterrent value. The DHS CCTV Technology Handbook frames CCTV as a "security force multiplier" that supports intrusion detection and access control (DHS CCTV Technology Handbook, PDF).
- They're built for weather. Most commercial bullets ship in sealed, impact-resistant housings — the DHS handbook categorizes housings as sealed, impact-resistant, tamper-resistant, and bullet-resistant, and outdoor bullets typically fall into the first two categories.
What a bullet camera is not: a standalone solution. The DHS handbook is explicit that CCTV should be planned as part of a multi-layered security approach, starting with a needs assessment covering functional, operational, infrastructure, and video retention requirements. If you skip that step, no housing shape saves you.
If the shape decision itself is where you're stuck, we have a separate breakdown of dome vs bullet cameras.
Quick physical rundown of a typical bullet:
- Cylindrical housing with an integrated sunshade over the lens
- Ingress-protection rating for outdoor use (see specs section below)
- Fixed or varifocal lens, usually a longer focal length than a comparable dome
- Frequently ships with an integrated IR array for low-light viewing
- Wall-mount, pole-mount, or corner-mount compatible
Specs That Matter, and Specs That Don't
Camera spec sheets are designed to make comparison hard. Here are the numbers worth reading carefully.
Resolution. Specify the task and the detail needed at the target distance. Compare sample recordings from the proposed view, including a moving subject at night. A megapixel count alone cannot establish whether a face or plate will be readable.
Sensor size. Often more important than megapixels for low-light performance. A larger sensor (e.g., 1/1.8") with fewer megapixels typically outperforms a smaller sensor (e.g., 1/3") with more megapixels once the light drops. If the spec sheet doesn't list sensor size, ask.
Low-light performance. Look for a minimum illumination figure in lux (lower is better) and terms like "starlight" or "color night vision" that indicate the camera can hold color at low light rather than immediately dropping to IR black-and-white. Color detail is often what an investigator actually needs.
Frame rate. Test whether the proposed setting captures the motion needed for your task. Assess exported video as well as live viewing, and measure its storage use under the selected codec, bitrate and recording mode. Halving frame rate does not necessarily halve storage.
IR range. Manufacturer IR ranges are measured under ideal conditions. Treat the advertised figure as a ceiling rather than a working number, and design overlap into your camera layout rather than trusting one bullet to reach the far end of a large lot. As a concrete hypothetical: if a camera advertises 60m IR, plan your coverage so you're not relying on identification-grade detail at 60m in an outdoor scene with obstacles.
Ingress protection (IP) rating. IP66 is a common minimum for outdoor bullets; IP67 offers stronger water ingress protection. The rating scheme is defined in IEC 60529 (the two digits describe solids and liquids protection respectively). If the camera will be pressure-washed or is coastal, ask the vendor about test conditions.
Operating temperature. Check the low-end rating against your winter climate and confirm whether the camera has an integrated heater. A camera rated only to -10°C won't survive a Prairie or northern-US winter.
Standards conformance. For IP cameras, ONVIF conformance (Profiles S, T, G, M) matters for integration with third-party video management systems. UK guidance for the surveillance camera industry lists the underlying standards that manufacturers and installers are expected to work to, including BS EN 62676 for video surveillance systems and BS EN IEC 62676-5 for camera data specifications and image quality performance (GOV.UK recommended standards). These aren't consumer-facing marketing terms, but they're useful buyer questions: "Which parts of BS EN 62676 does this product conform to?"
Marketing terms worth discounting on their own: "digital zoom" multipliers, generic "smart motion," "military-grade" claims, and PoE wattage figures that ignore heater load in cold weather.
Where Onboard AI Changes What You Get
Traditional motion detection triggers on pixel changes, which is why a windblown branch generates alerts. Modern cameras with an onboard neural processing unit can classify objects — person, vehicle, animal — before firing an alert, which sharply reduces false positives.
An AI surveillance camera with genuine onboard analytics typically supports:
- Person and vehicle detection with configurable zones and directions
- License plate recognition when the geometry, lens, and shutter speed are set up for it
- Loitering detection (someone dwelling in a zone longer than a set threshold)
- Line-crossing alerts across a user-drawn virtual line
- Tailgating detection at access-controlled doors
- Attribute-based video search (e.g., filtering recorded footage by object type, color, or direction)
Avigilon markets its bullet line explicitly around these AI video and audio analytics for real-time disturbance detection (Avigilon bullet cameras). We've covered the business benefits of AI security cameras separately if you want the operational case.
Two caveats:
- AI accuracy is bounded by the image quality feeding it. A poorly lit, wrong-angle, or motion-blurred feed will produce unreliable detections.
- Onboard AI and cloud-connected features raise cyber-security questions. UK guidance points buyers toward "secure by default" self-certification for surveillance products; ask vendors about firmware update policies, default password handling, and network hardening (Secure by default self-certification).
Placement and Mounting: Where Systems Actually Fail
The DHS handbook is blunt that a site survey is "an integral part of defining the requirements for discrete tasks and the role of each piece of equipment," and it recommends walking a site with aerial photos or blueprints to mark camera locations, coverage, and blind spots. Skipping that step is why so many bullet cameras end up producing footage that's technically 4K and practically useless.
Mounting height. Choose the position around the required view and the exact camera’s installation guidance. Demonstrate recognizable detail at the intended target location while accounting for tampering, safe maintenance and nearby obstructions.
Angle. Aim to catch a subject's face crossing the frame roughly perpendicular to the lens, or head-on at a choke point (door, gate). Steep downward angles are fine for counting or tracking direction but weak for identification.
Sun direction. East- or west-facing bullets will get sunrise/sunset glare that can wash out the frame for extended periods. If you can't avoid it, look for cameras with wide dynamic range (WDR) rated at 120 dB or better and verify the vendor's WDR specification method.
Cable runs. Have the installer verify the permitted Ethernet channel length, power budget, cable type, grounding and surge protection for the chosen equipment and route. Follow the exact manufacturer’s sealing instructions. The LTS installation guide illustrates why connector protection and installation details need separate attention from a camera’s housing rating.
Junction boxes and gaskets. Cheap plastic mounts can crack in cold weather. Metal outdoor-rated boxes, gasketed cable entries, and an annual seal check are worth the small extra cost.
Surge protection. For pole-mounted cameras or isolated outbuildings, PoE surge protectors on the run reduce the risk of a nearby lightning event taking out an entire switch's worth of cameras.
IR reflection off nearby surfaces. Cameras with the IR ring immediately adjacent to the lens can reflect off webs, dust, or nearby walls. If a bullet is going somewhere webs collect, look for models with the IR array physically separated from the lens.
Two common configuration mistakes:
- Pointing at a bright light source at night. Streetlights or neighbor floodlights in-frame will cause the auto-iris to close down and black out the rest of the scene.
- Trying to cover too much with one camera. Even at 4K, a single bullet stretched across a full parking lot leaves the far end at unusable pixels-per-foot for identification. Two well-placed cameras normally beat one heroic one.
If you'd rather not guess for your specific site, contact us and we'll walk the property with you.
Buyer Questions Worth Asking a Vendor
Before purchase, ask specifically:
- What is the image sensor size and minimum illumination in lux for color and B/W modes?
- What is the operating temperature range, and is a heater included?
- Which ONVIF profiles and BS EN 62676 parts does the product conform to?
- What is the firmware update policy, and does the vendor publish security advisories?
- Is there a documented secure-configuration guide for default passwords, encryption, and network exposure?
- What is the warranty term, and what does it cover?
- What waterproofing procedure is required at install, and what happens to the warranty if it isn't followed?
FAQ
Do bullet cameras work in extreme cold or heat?
Only if the spec sheet explicitly says so. Check the operating temperature range against your local climate, confirm whether an integrated heater is included, and don't assume outdoor rating implies cold-weather rating.
Can bullet surveillance cameras record without the internet?
Yes. Paired with a local network video recorder (NVR), a bullet camera records to on-site storage without internet access. Remote viewing and cloud backup require connectivity, but the recording itself does not. Many deployments run a hybrid model — local recording with a cloud copy when the link is up.
How long should footage be retained?
There is no single right answer. Retention is driven by organizational policy, insurance requirements, sector regulation, and local law. The DHS handbook lists video retention as one of four core requirements to define during needs assessment, alongside functional, operational, and infrastructure needs. Confirm your specific obligations before sizing storage.
Are bullet cameras easy to vandalize?
They're more exposed than dome cameras because the housing and lens are directional. Commercial bullets are typically built into metal impact-resistant or tamper-resistant housings (the DHS handbook categorizes these separately from sealed and bullet-resistant housings). If vandalism is a real concern, mount out of easy reach and enable tamper-detection alerts in the video management software.
Do I need a permit or license to install security cameras on my business?
Rules vary by jurisdiction. Generally, cameras covering your own property don't require a permit, but privacy laws restrict what can be recorded (neighboring windows, employee-only spaces such as washrooms and locker rooms) and may require signage. Verify with a local installer or legal counsel who works in your jurisdiction.
Can bullet surveillance cameras read license plates?
Only when configured for it. Reliable license plate capture needs a narrow field of view, an appropriate shutter speed to freeze plate motion, and IR that handles the reflectivity of plates. General-purpose bullets aimed at a wide lot won't reliably resolve plate detail. Plan a dedicated LPR camera per lane rather than expecting one camera to do wide coverage and plate reads simultaneously.
How do bullet cameras integrate with access control?
IP bullet cameras that support standard integration protocols (ONVIF, and increasingly BS EN 62676-2-x video transmission profiles) can link door events to bookmarked video clips, so a badge read or forced-door alarm surfaces the matching footage without manual searching. Confirm compatibility between your video management platform and your access control platform before buying.