How to Choose a Security Camera: The Four Questions That Decide It

How do you choose a security camera?

Answer four questions in order and the choice narrows itself. Where does it go — indoor, outdoor, or the doorstep? How is it powered — wired, PoE, battery, or solar? Where is the footage stored — on a card or base you own, or in a cloud you rent? And how does it connect — Wi-Fi or Ethernet? Resolution comes after those, not before.

Question one: where does it go?

The mounting position sets almost everything else. An outdoor camera has to survive weather and shoot a wide approach at distance; an indoor camera trades weatherproofing for discretion and a closer field; a doorbell sits at the door and answers one narrow, close question — who is standing here. Decide the position first, because a camera bought for the wrong place fails at basics no spec can rescue.

Resolution and field of view are a pair, not two numbers

Resolution and field of view trade against each other, and reading them together is the whole skill. A wide lens covers more of a yard but spreads its pixels thin, so a face at the far edge is a smudge; a narrower or zoomed lens frames that face large but sees less width. Higher resolution buys back some of the loss — 2.5K on the Wyze Cam v4or 4K on the eufyCam 3 gives you more pixels to spend across the frame — but it does not repeal the trade-off. For a driveway where you want a readable plate, a camera with real optical zoom beats a higher-resolution fixed wide lens every time, because optical zoom moves the pixels to where the detail is instead of cropping into a picture that was never sharp there. Match the lens to the job: wide for a broad approach, longer or zoomed for a choke point, and put the action you care about in the middle third of the frame rather than the distorted edge.

Night vision: infrared, color, or a spotlight

Most of what a security camera records happens in poor light, so how it sees after dark matters as much as its daytime resolution. There are three approaches. Standard infrared gives a monochrome image with invisible illumination and a limited range — push a camera past that range and the far half of the frame goes black. Starlight or color night vision uses a more sensitive sensor to keep some color in ambient light, which makes clothing and vehicles far easier to describe. A spotlight camera simply floods the scene with visible light on motion, which gives the best image but blazes at the neighbors and announces the camera. None is universally right: color night vision suits a street-lit front; a spotlight suits a dark side passage; plain infrared is fine for a garage. What matters is that the zone you care about falls inside whatever range the camera actually reaches.

Question two: how is it powered?

Power is the constraint that most often decides the install, and it is the one buyers underestimate. There are four ways to feed a camera, and each buys something and costs something.

• Wired mains. A plug or hardwired feed near the mounting point. Simple and permanent, it supports continuous around-the-clock recording, but it ties the camera to wherever an outlet already is.
• PoE (Power over Ethernet).One Ethernet cable carries both power and data, so there is nothing to charge and no Wi-Fi in the path. It is the most reliable design and the one serious continuous-recording setups use — and it is the most work, because you have to run Cat6 to each position.
• Battery. No cabling at all, which is why battery cameras sell. The catch is baked into the physics: a battery camera records events, waking on motion and sleeping between them, and periodically needs recharging. No battery camera records continuously — not this one, not any of them.
• Solar.A battery camera with a panel that tops it up, so in practice you stop thinking about charging — the eufyCam 3 kit puts a panel on every camera. The rule attached is that a panel needs genuine direct sun, so the shaded corner that looks perfect for coverage may be the one spot a solar camera cannot sustain itself.

The honest trade-off runs straight down that list: the less cabling a camera needs, the less it can promise about continuous recording. If you need footage of everything, all the time, that is a wired or PoE camera, full stop. If you can live with event clips and want no drilling, battery or solar is the deal, and it is a fair one once you know what it gives up. The connectivity-and-cost side of this same choice is worked through in our PoE versus Wi-Fi guide.

Question three: where does the footage live?

This is the question with the largest bill attached, and the one most buyers skip until it is too late. A camera either keeps its recordings on hardware you own — a microSD card in the camera, or a base station or recorder in the house — or it sends them to the manufacturer's cloud, where retrieving them almost always requires a monthly plan. That single design decision is usually the biggest long-run cost of owning the camera, dwarfing the price on the box over a few years.

Local storage means the camera writes to something in your home. The eufyCam 3 records to a HomeBase that takes a large drive, so retention is a hardware decision rather than a plan tier; the Wyze Cam v4 writes to a microSD card in the camera. Both give you full playback for free. The trade is that footage kept in the house can be stolen with the camera or the base — a genuine limitation eufy's own design carries, and the reason a recorder in a cupboard beats a card in the camera. Cloud storage means the clips live on the vendor's servers, off-site and safe from a thief, but reachable only through the app and, on most hardware, only while you pay. Some cameras do both, mirroring a local copy to the cloud, and those are the most resilient of all. Which pattern a camera uses is the single most important line on its spec sheet; the full decision is laid out in our local-storage versus cloud comparison, and whether you truly need a plan at all in our subscription guide.

Question four: how does it connect?

Connection is the last question because it is downstream of the first three. A wired PoE camera does not touch Wi-Fi at all — its Ethernet cable is its connection — which is exactly why PoE is the reliable choice for a fixed install. Everything else is Wi-Fi, and there the detail that matters is the band. Most budget cameras use only the 2.4GHz band, which reaches further through walls but is the most congested part of the spectrum in a typical neighborhood; better cameras add 5GHz, which is faster and less crowded but shorter-ranged. For a camera at the edge of the property, 2.4GHz range usually wins; for one streaming high-resolution video near the router, dual-band avoids the stutter that congestion causes. Whichever it is, test the signal at the exact mounting point before you drill, because a strong signal at the router says nothing about the far corner of the garden.

Weatherproofing: read the IP rating, not the word “outdoor”

An outdoor camera has to survive rain, dust and temperature swings, and the spec that says whether it can is the IP rating — two digits after the letters IP, where the first is dust resistance and the second is water resistance. The number you want on an exterior camera is IP65 or better: the 6 means dust-tight, the 5 means protected against low-pressure water jets from any direction, which covers driven rain. IP66 and IP67 add more margin against heavy jets and brief immersion. A camera sold as “outdoor” without a stated rating is asking you to trust a marketing word instead of a standard; look for the digits. Note too that the rating covers the camera body, not the cable entry or the connector, so a well-rated camera can still fail at a badly sealed junction — mount the connections under an eave or in a housing where you can.

Putting the four answers together

By the time you have answered where, how powered, where stored and how connected, the field has narrowed to a handful of cameras and the resolution number is a tiebreaker, not the decision. A subscription-free whole-property system like the eufyCam 3 answers “solar, local base, no plan” in one purchase; a cheap mains camera with a card answers “wired, local, low stakes” for a garage or shed. The full field, sorted by use case, is in our home security cameras roundup, and the exterior-specific picks — where weatherproofing and night range matter most — are in our outdoor cameras roundup. Before any of that, though, plan the positions: where a camera goes decides how well it does its job, and that is worked through in our camera placement guide.