Camera Operation & Control

What does PTZ stand for in the context of camera control?

• APower Tracking Zone
• BPermanent Technical Zone
• CPixel Timing Zoom
• DPan-Tilt-Zoom✓

Answer: PTZ stands for Pan-Tilt-Zoom, allowing cameras to move and magnify their view.

What is a preset in PTZ camera control?

• AA default brightness and contrast setting applied whenever the camera powers on
• BA colour filter
• CA recording format
• DA saved camera position, zoom, and focus that can be recalled instantly✓

Answer: A preset stores a camera's pan, tilt, and zoom position for instant recall to frequently monitored areas.

How should an operator set up effective presets for a PTZ camera?

• ARandomly place them around the scene
• BSave key areas of interest (entrances, blind spots) and verify they show clear, usable views✓
• CSet them all to maximum zoom
• DChange them every hour

Answer: Effective presets cover strategic areas (entry points, high-value zones) and should show clear, useful views for monitoring.

What is a tour function in PTZ camera control?

• AAn automated sequence moving between saved presets on a timer✓
• BRemote monitoring of the site from outside the building over a web link
• CA manual setting for lighting
• DRecording external locations only

Answer: A tour automatically cycles through preset positions at defined intervals, useful for continuous monitoring of multiple areas.

When manually tracking a person moving through the scene, what should an operator prioritise?

• ASwitching presets frequently
• BFollowing them as closely as possible with the maximum zoom held on the face
• CUsing slow camera movements
• DMaintaining view of the person while keeping context of surrounding area✓

Answer: Good tracking maintains both the subject and surrounding context in view to understand behaviour and threats.

What is the primary concern when zooming in excessively during CCTV monitoring?

• AIt increases image brightness too much
• BIt requires more power
• CIt narrows the field of view, losing sight of the broader context and surrounding threats✓
• DIt wears out the camera faster

Answer: Excessive zoom reduces field of view, risking missing important activity in peripheral areas.

What is the 'zoom creep' problem in CCTV monitoring?

• ACameras gradually fail over time
• BOperators become too focused on one zoomed-in area and lose awareness of the broader scene✓
• CZoom lenses gradually lose focus
• DRecording frame rates decrease

Answer: 'Zoom creep' describes the tendency to zoom in excessively, losing situational awareness of the wider area.

How should an operator monitor multiple camera feeds simultaneously?

• ASystematically scan all feeds on a schedule, paying attention to motion and alerts✓
• BFocus on one camera only
• CWatch every screen equally at all times, giving each exactly the same continuous attention
• DIgnore cameras without recent activity

Answer: Effective multi-camera monitoring involves systematic scanning with attention to alerts and movement patterns.

What should an operator do if a camera malfunctions during a shift?

• AIgnore it and continue monitoring other cameras
• BContinue working and report it at the end of shift
• CImmediately report it to supervisor and follow procedures to address the gap in coverage✓
• DAttempt repairs yourself

Answer: A malfunctioning camera creates a security gap and must be reported immediately so management can respond.

What is the purpose of 'white balancing' a camera?

• AIncreasing resolution
• BAdjusting colour accuracy to reflect true colours under different lighting conditions✓
• CMaking the image brighter
• DReducing image compression

Answer: White balance adjusts colour reproduction so that neutral colours appear neutral under different light sources.

What does 'focus' control in cameras determine?

• AThe speed at which the camera pans and tilts between saved presets
• BThe overall brightness of the image measured across the whole scene
• CThe sharpness and clarity of objects at specific distances✓
• DThe recording quality, expressed as the bitrate written to the drive

Answer: Focus adjustment ensures objects at desired distances appear sharp and clear in the image.

When should autofocus be used in CCTV cameras?

• AAlways - it's always best
• BNever - manual focus is always preferable
• COnly in outdoor scenes
• DWhen scenes are relatively static; manual focus may be better for specific depth zones✓

Answer: Autofocus is useful for dynamic scenes; manual focus is better when monitoring specific depth zones.

What is the 'iris' setting in a camera?

• AThe cable connection type used between the camera and the recorder
• BThe recording file format in which the images are saved to disk
• CThe aperture controlling how much light enters the camera✓
• DThe shape and curvature of the outer glass element of the lens

Answer: The iris (aperture) controls light entry, affecting image brightness and depth of field.

What should an operator do if they observe suspicious behaviour through CCTV?

• AContinue monitoring and ignore it
• BFollow established protocols: alert supervisor, record observations, and coordinate response✓
• CDelete the footage immediately
• DLeave their position to investigate alone

Answer: Suspicious activity should be reported immediately to supervisors following established incident response procedures.

What is 'dead space' in CCTV coverage?

• AAreas where no motion has been detected at all during the current shift
• BEmpty rooms
• CAreas not covered by any camera due to blind spots or obstruction✓
• DAreas where storage is not needed because nothing of value is kept

Answer: Dead space refers to areas not covered by cameras - a security vulnerability that should be identified and minimised.

How should an operator respond to a camera being deliberately obstructed (e.g., covered, pointed at wall)?

• AReport it immediately as a security incident✓
• BAdjust another camera to compensate and carry on with the shift
• CAttempt to clean the camera remotely using the wash-and-wipe control
• DAssume it is accidental and do nothing until the next maintenance visit

Answer: Deliberate obstruction of cameras is a serious security concern and must be reported immediately.

What does 'zoom creep' cause in terms of incident response?

• AImproved image quality on the zoomed area and faster identification of suspects
• BFaster reaction times
• CLoss of situational awareness and delayed response to threats in other areas✓
• DBetter identification

Answer: Focusing excessively on one zoomed area reduces awareness of developing threats elsewhere.

What is the best practice for monitoring camera feeds during extended shifts?

• ARotate focus systematically, take regular breaks, and maintain alertness to combat fatigue✓
• BIgnore cameras without alerts
• COnly check feeds every 30 minutes
• DStare continuously at one monitor

Answer: Systematic monitoring with breaks helps maintain alertness and prevents fatigue-related performance decline.

When using optical zoom versus digital zoom, which provides better image quality?

• ABoth lose quality once the image is enlarged beyond the sensor size
• BOptical zoom - it magnifies without losing image data and quality✓
• CThey are equivalent
• DDigital zoom (always)

Answer: Optical zoom magnifies light physically before capture; digital zoom crops the image, potentially losing detail.

What should an operator verify about camera presets before starting a shift?

• AThat all presets are functioning and show clear, unobstructed views of key areas✓
• BThat they match previous shifts exactly
• CThat they're all set to maximum zoom
• DPresets are always fine

Answer: Presets should be tested at shift start to ensure they display correct, unobstructed coverage.