What Kinds of Cameras Are Available?

There are many types of cameras.  Some cameras can be multiple types- for example BOTH wireless, and fixed.  This is a glossary of various camera types, and some associated terms. To read manufactrurer specs, or forums, you'll need to have an understanding of these terms.

Here are some you might encounter,  in no particular order:

IP (CAMERA):   a camera the connects directly to a LAN (Local Area Network) on a switch or router port, generally with its OWN webserver.  Opposed to a...

WEB (CAMERA): A camera, NOT AN IP Camera, normally connected through a USB port or capture card, to a computer, and normally accessed through windows services, or a manufactures proprietary system. These cameras do not have their own webserver, and need a computer to function.

PTZ (CAMERA): This is a common term in the IP Camera world, and it means PAN/TILT/ZOOM. I've noticed that it is used loosely- i.e. a PT (no zoom) camera might still be described as a PTZ camera. These cameras cover MUCH more area than their less-agile cousin, the FIXED camera. Pan and tilt are often measured in degrees- 320 degree pan is excellent. Tilt is typically 90 degrees or less.

FIXED (CAMERA): A camera with no pan/tilt control. A fixed camera MIGHT have zoom capability, but often it will not even have that. These cameras can usually be repositioned physically by moving their mount.

WIRELESS (CAMERA): A camera that can connect, usually securely, to a wireless LAN. A wireless camera might be PTZ, or Fixed. It might be indoor, or outdoor. Nearly always, a wireless camera will also have the ability to connect to the LAN wired (with a CAT-V connection). Most wireless cameras STILL require a wired power source, although some solar-powered camera discussions are starting to pop up.

WIRED (CAMERA): A camera that can connect only wired to the LAN  (with a CAT-V connection).

CCTV (CAMERA): generally these are not considered as IP Cameras per-se, although often the system to which they connect has a webserver, so they can functionally LOOK like an IP Camera. These cameras usually have an analog A/V connection to a central computer, or a stand-alone DVR that records from them. They are often used it sets of 2,4, or 8, for video surveillance.

H.264 (CAMERA): this is a rather new HD standard inspired by BluRay Technology with superior video compression. Oddly, some cameras boast H.264 capability, but offer only 640x480 pixels, which most would NOT consider HD video. When camera shopping, this is a useful term to search for, as only the latest, and most capable cameras would support this standard.

Blue Iris (software): this is a software package that supports IP and other cameras.

 DVR - a recording system, normally digital, and almost always onto a hard drive, and often with multiple camera sources.

Video Capture: a camera such as a video camcorder, with an interface that allows it to communicate to a computer.

Motion Detect (Camera): This type of camera has firmware that can trigger events such as ftp, email, or alarms, when motion is detected (a threshold of pixels change at a threshold rate).

IR (Camera): Normally a camera capable of night vision. A camera of this class that cannot be CUT (see below) often has perceptible washed out colour. IR camera nighrt vision is usually reported in meters, or feet, of night vision, which is also a function of how many LED's it has. Some have 1 ring, some 2, some 3. Generally the more meters or IR capability, the better the night vision quality.

IR-CUT (Camera): An IR camera that has the capability to CUT the IR function in lighted views. These are now emerging as a new requirement as users are generally unhappy with IR camera quality in lighted areas, with no cut.  IR cameras, without IR-Cut, might try to minimize the IR effects by attenuating the IR level. This generally is not sufficient to remediate the image color problems (washing).

Audio (Camera): A camera that can also detect and transmit audio signals.

2-way audio (Camera): A camera  that can also detect and transmit audio signals, but ALSO can BROADCAST audio into the area. These are useful as 2-way communication, or to make broadcasts such as WARNING- YOU ARE PRESENTLY BEING MONITORED!

Hidden (Camera): In some situations, a camera might be hidden to avoid detection.

LED (Camera): A camera with a blinking or static LED, to announce its connection, power, or other status.

Torpedo (Camera):  A tubular-shaped camera normally with a fixed mount. These are often also fixed.

Dome (Camera): A camera mounted inside a glass or plastic, and often smoked dome. These cameras generally cannot support night-vision because the dome prevents IR detection.  These are often seen in store or casino surveillance systems, or mounted in parking lots on poles, etc. They are often PTZ cameras. Sometimes the dome assembly can be purchased separately to house an IP camera. Normally, Dome cameras are mounted inverted, so the image must be reversed and mirrored with software.

TF or SD (Camera): A camera with a slot for an SD or TF card to record photos or video.

Embedded ap, or firmware: The manufacturer's webserver and PTZ control software embedded into the camera, and usually can be updated with revisions.

Open IP (Camera):  A IP camera with no password, or a public password, that is generally accessible by the public through a browser. Some of these are intentionally accessible, some may not be, but none-the-less, are. There seems to be controversy and much discussion over whether its permissible or proper to view an open IP camera that was not INTENDED to be open. The consensus seems to be if its NOT pass-worded, its OK to visit. I cannot comment on the legalities of this position, but it *seems* as if that's probably true.

Home IP (Camera): A hobbiest-quality camera, often under $100, most often plastic, with limited zoom or recording ability.

Pro IP (Camera): A professional camera, often over $1000, far more durable and reliable than a home camera.

Zoom (Camera): A camera with optical zoom capability. Lower-end camera support 2-3X zoom , hi-end (over $1000) cameras might support 16X zoom or better.

Dummy or Fake  (Camera): A device that LOOKS like a camera, but in fact is not. These sometimes have LED's to make them look more real.