still camera
Enable an AI agent to recognise a still camera, assess its ability to make and retain photographs, and determine which capture, configuration, maintenance or transfer actions are supported.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex + Grok
Purpose and description
Enable an AI agent to recognise a still camera, assess its ability to make and retain photographs, and determine which capture, configuration, maintenance or transfer actions are supported.
A still camera is an optical-mechanical or optoelectronic instrument that records a discrete two-dimensional image of a scene, one exposure at a time, by focusing light onto a photosensitive medium (film, plate, or electronic image sensor), as distinct from apparatus whose primary function is continuous motion-picture or video recording.
It can be Assemble a compatible lens, recording medium and power configuration where the camera supports replacement.; Frame a subject and set supported focus and exposure controls.; Trigger an individual exposure or a supported sequence and check whether recording completed.; Inspect capture readiness and diagnose camera-specific recording or image-quality faults.; Review or transfer digital photographs, or remove exposed physical media using the appropriate handling sequence.; Perform documented user maintenance and place the camera in a suitable transport or storage state..
Distinguishing features
It is designed as a dedicated photographic device whose intended outputs include individually recorded still exposures; a phone with a camera remains a general-purpose host device.
It provides an image-forming path and a recording plane or sensor, or is a camera body designed to complete that path with an attached lens; a standalone lens does not qualify.
Its capture process retains an exposure on a physical or electronic recording medium; an optical viewfinder or projector alone does not.
Individual photograph capture is an intended operating function, rather than merely extracting frames later from a recorded video stream; hybrid still/video cameras require an explicit classification boundary.
Scope
+ Identification as a dedicated still camera, including film, digital and instant configurations
+ Installed lens or other image-forming arrangement, recording medium and compatible interfaces
+ Framing, focus, exposure and still-image capture capabilities
+ Readiness to expose, record and retain the next photograph
+ Camera-specific faults, handling constraints and supported maintenance
+ On-device review and supported removal or transfer of recorded photographs
- General-purpose phones and computers that contain camera subsystems
- Independent models of detachable lenses, flashes, batteries and memory cards
- Photographs as creative works, information records or evidence
- Film development, scanning, printing and external image-editing workflows
- Studio lighting systems, supports and remote-control infrastructure
- Photographer identity, photographic assignments and permission to photograph subjects
Characteristics
- Recording technology
- digital sensor, photographic film, instant photographic medium, other documented technology Determines the recording sequence, readiness checks and handling required to preserve photographs.
- Installed imaging configuration
- body linked to installed lens or image-forming assembly and recording medium Separates what the body supports from what the assembled camera can currently do.
- Active recording area
- width × height in mm, with active crop or frame format identified Helps establish lens coverage and the field of view of the current configuration.
- Effective focal length configuration
- actual focal length or adjustable range in mm; unknown or not applicable where appropriate Supports framing decisions when interpreted with recording area and lens configuration.
- Focus capability
- fixed focus, manual focus, autofocus or supported combinations, with available modes Determines whether and how the camera can place the intended subject in focus.
- Exposure control envelope
- documented shutter-time, aperture and sensitivity settings, dependencies and automatic modes Shows which exposure decisions are available with the installed lens and recording medium.
- Capture readiness
- ready, ready with limitations, blocked, unknown; record the reason Distinguishes apparent power or mechanical operation from ability to retain the next exposure.
- Remaining recording capacity
- estimated exposures at stated settings; remaining bytes where applicable Supports decisions about capture continuity and replacement of recording media.
- Image-path condition
- observed obstruction, contamination, damage, light leakage or no detected defect, with inspection method Identifies faults that may spoil photographs even when the camera releases normally.
- Capture and retrieval interfaces
- documented local controls, remote-release interfaces, data-transfer interfaces and medium-removal methods Determines how an agent may operate the camera and retrieve recorded material.
Also called
+12
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 16 findings · 24 questions.
Photographic identity and configuration Establishes what constitutes this camera and which photographic capabilities belong to its present assembly.
A camera body, a complete fixed-lens camera and a host device containing a camera must not be treated as interchangeable objects.
Device boundary
Identifies the camera and its relationship to adjacent device classes.
Still-camera membership
Records evidence that the item is a dedicated still camera or a body intended to become one through compatible assembly.
- What intended photographic function identifies this item as a still camera? definition
- Is the registered object a complete camera, a camera body or a camera subsystem belonging to another device? boundary
Installed photographic assembly
Distinguishes supported configurations from the components actually fitted.
Body, lens and medium compatibility
Records the installed image-forming arrangement and recording medium, including restrictions introduced by adapters or incomplete coupling.
- Which lens or image-forming assembly and recording medium are currently installed? definition
- What documentation or observed operation establishes compatibility, including image coverage and control coupling? provenance
Framing, focus and exposure Describes how the camera selects the recorded scene and controls its exposure.
An agent needs to know whether the intended subject can be framed, focused and exposed with the current configuration.
Scene selection
Connects framing and focus aids to the image actually recorded.
Framing and focus correspondence
Records available viewing and focusing methods and known differences between their indications and the recorded frame.
- Which framing and focus methods are available with the installed lens? definition
- What observed or documented coverage, parallax or focus-alignment limitations affect correspondence with the recorded photograph? measurement
Exposure control
Captures usable exposure settings and dependencies among shutter, aperture, sensitivity and illumination.
Usable exposure settings
Records which exposure parameters are fixed, manually adjustable or automatic, and any mode-dependent restrictions.
- Which shutter times, apertures and sensitivity settings are usable with this lens and recording medium? measurement
- How can an agent set or lock exposure, and what shutter-mode or flash-synchronisation restrictions apply? action
Capture and recording lifecycle Tracks the transition from readiness through exposure to retention and retrieval of a photograph.
Releasing the shutter does not by itself establish that a usable photograph was retained.
Next-exposure readiness
Identifies the conditions required to expose and record the next frame.
Release and recording preconditions
Records applicable power, shutter-cocking, film-advance, medium-capacity, buffer and interlock conditions.
- Which power, mechanical, medium and interlock conditions currently permit or block the next exposure? measurement
- What supported action makes the camera ready without sacrificing an existing exposure? action
Retention and retrieval
Distinguishes exposure completion, successful recording and safe access to the result.
Recording completion and safe access
Records available completion evidence and the sequence for review, transfer or removal of exposed media.
- What indication or inspection supports that the exposure was retained, and what remains unverifiable until later processing? measurement
- What sequence permits review, transfer or medium removal without interrupting writing or exposing light-sensitive material? action
Photographic condition and care Assesses faults and handling constraints that affect photographic operation or preservation of the camera.
A camera can appear operational while optical, timing or light-sealing defects compromise its output.
Image-affecting condition
Connects observed symptoms to the imaging path and exposure mechanism without assuming an unverified cause.
Photographic fault evidence
Records inspection and test-exposure evidence for contamination, light leakage, focus error and exposure irregularity.
- What inspections or test exposures reveal obstructions, contamination, light leaks, focus errors or uneven exposure? measurement
- Which symptoms are attributable to the camera body, and which remain unresolved between lens, medium, settings or later processing? boundary
Handling and maintenance
Defines supported care actions and camera-specific limits on exposure to operating conditions.
Permitted care and operating envelope
Records documented operating limits and user-serviceable procedures for sensitive imaging and recording components.
- What model-specific evidence establishes environmental limits and restrictions on handling the shutter, sensor, film gate or seals? provenance
- Which cleaning, component-change and storage actions are documented for the user, and which conditions require service? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- compact / point-and-shoot (fixed or limited-zoom lens, automatic exposure)
- bridge / superzoom (non-interchangeable long zoom, SLR-like body)
- digital single-lens reflex (DSLR)
- mirrorless interchangeable-lens camera (MILC)
- rangefinder (coupled or uncoupled, film or digital)
- medium-format (film backs or digital, roughly 6×4.5 to 6×9 cm class)
- large-format / view camera (sheet film or digital back, typically 4×5 inch and larger)
- instant (integral or peel-apart self-developing film)
- Which of these kinds and varieties hold for the sense of still camera this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Wikidata - Q15328 (camera); Q52943 (digital camera) - Q15328 is the generic camera item; digital still cameras are typically typed as Q52943.
- Harmonized System (WCO) - 9006 (photographic cameras other than cinematographic); 9006.40 (instant print); 9006.51-9006.53 (cameras with a through-the-lens viewfinder / other, by film width) - National tariff splits under 9006 vary; cinematographic cameras are 9007.
- CIPA / JEITA product class - Digital Still Camera (DSC); DCF (Design rule for Camera File system) directory DCIM - Trade and file-system designation used in shipment statistics and on-card layout.
- GTIN / EAN / UPC - 13- or 12-digit product GTIN on the retail SKU - Identifies a specific manufactured model and kit, not the class.
- Exif Make / Model - TIFF/Exif tags 0x010F (Make) and 0x0110 (Model) - De facto instance identifier written into every JPEG/TIFF from a DSC.
- Which of these identifiers and schemes hold for the sense of still camera this model covers, and on what evidence? provenance
Standards and regulation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- ISO 12232:2019 - ISO speed, SOS and REI for digital still cameras (ISO)
- ISO 12233 - resolution and spatial frequency response of electronic still-picture cameras (ISO)
- ISO 15739 - noise measurements for electronic still-picture imaging (ISO)
- ISO 12231 - vocabulary for electronic still picture imaging (ISO)
- ISO 518 - camera accessory (hot) shoes (ISO)
- ISO 1222 - tripod connections / bushing (ISO)
- CIPA DC-008 / JEITA CP-3451 - Exif for digital still cameras (CIPA / JEITA)
- CIPA DC-001 - Design rule for Camera File system, DCF (CIPA)
- CIPA DC-002 / successor battery-life measurement procedure for DSCs (CIPA)
- IEC 62368-1 - AV/ICT equipment safety, covering most current digital cameras (IEC; adopted as EN/UL 62368-1)
- UN Manual of Tests and Criteria, subsection 38.3, and IATA/IMDG lithium-battery transport rules for camera packs (UN, IATA, IMO)
- EU Radio Equipment Directive 2014/53/EU and FCC 47 CFR Part 15 - wireless (Wi-Fi/Bluetooth) cameras (European Commission; FCC)
- Which of these standards and regulation hold for the sense of still camera this model covers, and on what evidence? provenance
Real-world use
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Photojournalism, documentary and event coverage with interchangeable-lens DSLRs or mirrorless bodies.
- Studio and commercial stills (product, fashion, architecture) on tripod-mounted medium- or large-format systems.
- Amateur and family still photography with compact, bridge, instant, and phone-adjacent dedicated cameras.
- Scientific, industrial and forensic still capture (microscopy adapters, evidence photography, machine-vision stills) where a single exposure is the record.
- Motion-picture and television production stills: a dedicated stills photographer works beside cinema cameras.
- Aerial, survey and photogrammetric still frames from metric or mapping cameras (often treated as a specialised still-camera subclass).
- Retail and customs: imported as HS 9006 goods, reported in CIPA digital-still-camera shipment statistics.
- Which of these real-world use hold for the sense of still camera this model covers, and on what evidence? provenance
Typical measurements
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- focal length of taking lens - 8-600 (fixed or zoom; medium/large format often 50-300) - mm
- maximum aperture (f-number) - 0.95-8 at wide end of consumer and professional taking lenses - dimensionless (f/N)
- photosensitive format (sensor or film frame diagonal) - ~6 (1/2.3 in compact) to 43 (35 mm full frame) to ~70-150 (medium/large format) - mm
- effective pixel count (digital) - 12-150 - megapixel
- ISO speed / exposure index - 50-102400 (native often 100-25600) - ISO arithmetic speed
- shutter-speed range - 1/8000-30, plus bulb; leaf shutters often 1/500-1 s - s
- body mass (body only, typical interchangeable-lens) - 250-1500 - g
- spatial resolving power (lens-film or lens-sensor) - 30-150 on film; digital limited by sampling and AA filter - lp/mm
- Which of these typical measurements hold for the sense of still camera this model covers, and on what evidence? provenance
Failure modes and hazards
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Mechanical shutter or aperture-blade failure; stuck or inaccurate speeds.
- Light leaks and fogging on film bodies (degraded foam, worn felt, cracked bellows).
- Sensor dust, stuck/hot pixels, and microlens/cover-glass fungus or haze.
- Sun or laser damage to the image sensor or shutter curtain (especially at long focal lengths).
- Lithium-ion pack swelling, thermal runaway, and fire in use, charging, or air transport.
- High-voltage flash-capacitor shock during repair of units with built-in or accessory flash.
- Card or firmware corruption producing silent loss of exposures.
- Overheating and thermal throttling on high-resolution live-view/mirrorless bodies.
- Privacy, consent and airspace offences from still photography in restricted places; some jurisdictions regulate camera use more tightly than possession.
- Which of these failure modes and hazards hold for the sense of still camera this model covers, and on what evidence? provenance
Regional variation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- English production usage: 'still camera' / 'stills camera' is the term used on film and TV sets to distinguish the photographer's camera from the motion-picture camera; consumer English usually just says 'camera'.
- CIPA/JEITA (Japan) official product class is 'digital still camera' (DSC); shipment statistics still use that phrase after the compact-camera market collapsed in favour of smartphones.
- German 'Kamera' and French 'appareil photo' commonly mean a still camera; a cine camera is named separately (Filmkamera, caméra de cinéma).
- Instant photography remains a distinct retail category in Japan, South Korea and parts of Europe (Fujifilm instax, Polaroid) more than in professional markets.
- Large-format sheet-film practice is concentrated in art, architecture and some survey work; 120/220 roll-film and 35 mm film stills persist as a specialist/analogue market rather than a regional default.
- HS 9006 national splits (instant, through-the-lens viewfinder, film width) are applied differently in EU TARIC, US HTS and Japanese tariff schedules.
- Which of these regional variation hold for the sense of still camera this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- cinematographic / movie camera - Primary function is a timed sequence of frames at a stated frame rate (HS 9007; cinema or high-end digital motion cameras). A still camera's primary record is one exposure per actuation, even if the body can also shoot short video.
- video camcorder / ENG camera - Designed around continuous video recording, audio, and (historically) tape or video codecs as the main output; stills, if present, are a secondary grab.
- smartphone (with camera module) - General-purpose computing handset whose camera is a subsystem; not classified or traded as a photographic camera (not HS 9006) and not a CIPA DSC for shipment counts.
- webcam / conferencing camera - Tethered or networked live-image device with no standalone exposure-making workflow (no independent shutter-priority stills archive as the product purpose).
- document / film scanner - Captures an already two-dimensional original by scanning in time, not a scene through a taking lens in a single photographic exposure.
- action camera (video-primary) - Wearable/rugged devices are sold and used chiefly as video recorders; a still-capable action cam is still classed with video unless the product's primary specified function is single-frame stills.
- photographic lens (interchangeable) - An optic only; the camera is the body that holds the sensitive medium, shutter (or electronic shutter), and exposure controls.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of still camera this model covers, and on what evidence? provenance
Sources
- ISO 12232:2019 Photography - Digital still cameras - Determination of exposure index, ISO speed ratings, standard output sensitivity and recommended exposure index - Defines the digital-still-camera class and the exposure-index / ISO-speed quantities used to rate those cameras.
- ISO 12231:2012 Photography - Electronic still picture imaging - Vocabulary - Standard vocabulary that treats the electronic still-picture camera as a distinct imaging instrument.
- CIPA DC-008 / JEITA CP-3451 Exchangeable image file format for digital still cameras: Exif - Industry file-metadata standard that names the product class 'digital still camera' and encodes make, model, exposure, and lens data.
- Harmonized System heading 9006 - Photographic (other than cinematographic) cameras; photographic flashlight apparatus and flashbulbs - Customs nomenclature that legally separates still photographic cameras from cinematographic cameras (heading 9007).
What the second pass must settle
- Where does the registry place hybrid still/video cameras, machine-vision cameras and camera modules relative to this entry?
- Should incomplete camera bodies be instances of this thing with an assembly state, or belong to a neighbouring registered concept?
- Which film, instant, digital and specialist camera variants require additional layers beyond this shared structure?
- What minimum inspection or test-exposure evidence is sufficient to judge photographic readiness when recorded results cannot be reviewed immediately?
- How should model-specific manuals and service information establish condition thresholds without treating nominal specifications as verified performance?