{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.mirrorless-interchangeable-lens-camera","code":"thing-q209918","url":"https://ver.cy/models/thing/q209918/","name":"mirrorless interchangeable-lens camera","alternateNames":["Panasonic Lumix DMC-G1","Panasonic Lumix DMC-G7","Canon EOS Ra","Hasselblad X2D 100C","Hasselblad X2D II 100C","Panasonic Lumix DC-S5","Sony α7S III","Sony α7C","Fujifilm X-S10","Fujifilm GFX 50R","Nikon ℤ 6Ⅱ","Nikon ℤ 7Ⅱ"],"kind":"thing","status":"research-draft","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A digital camera with interchangeable lenses that has no reflex mirror, forming the image directly on the sensor and commonly showing it through an electronic viewfinder or rear screen; commercial examples include the Epson R-D1 digital rangefinder introduced in 2004, preceding the Panasonic Lumix DMC-G1 introduced in 2008 using the Micro Four Thirds system. Mirrorless cameras are now dominant among system cameras, with formats from Micro Four Thirds to full frame and medium format; the registry aliases name specific models, including the Panasonic Lumix DMC-G1 and G7 and DC-S5, the Canon EOS Ra for astrophotography and the Hasselblad X2D 100C and X2D II 100C, which are instances. Current models and availability should be checked against current sources, and the model does not give purchase advice.","purpose":"Let an agent explain mirrorless interchangeable-lens cameras, relay technology, history, sensor formats and lens mounts from photography and industry sources, flag model instances, and distinguish MILCs from DSLRs, compact cameras, bridge cameras and rangefinders.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["No mirror","Electronic viewfinder","Short flange distance","Interchangeable lenses"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What a mirrorless camera is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is a mirrorless interchangeable-lens camera, and how does it differ from DSLRs, compacts, bridge cameras and rangefinders?","kind":"definition"},{"text":"Is the question about technology, history or buying, which needs independent reviews?","kind":"boundary"}]}]},{"id":"models","name":"Models","description":"Named models.","findings":[{"id":"models-finding","name":"Models","description":"Models.","questions":[{"text":"What are the Lumix G1, G7 and S5, Canon EOS Ra and Hasselblad X2D models?","kind":"definition"},{"text":"Which entry fits the specific model?","kind":"action"}]}]}]},{"id":"technology","name":"Technology","description":"Technology.","layers":[{"id":"evf","name":"Viewfinders","description":"Electronic viewfinders.","findings":[{"id":"evf-finding","name":"Viewfinders","description":"Viewfinders.","questions":[{"text":"How do electronic viewfinders and on-sensor autofocus work?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"sensors","name":"Sensors","description":"Sensor formats.","findings":[{"id":"sensors-finding","name":"Sensors","description":"Sensors.","questions":[{"text":"How do Micro Four Thirds, APS-C, full frame and medium format differ?","kind":"measurement"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"history","name":"History","description":"History.","layers":[{"id":"origins","name":"Origins","description":"Origins.","findings":[{"id":"origins-finding","name":"Origins","description":"Origins.","questions":[{"text":"How did the 2008 Micro Four Thirds launch start the mirrorless era?","kind":"provenance"},{"text":"Which entry fits Micro Four Thirds system?","kind":"action"}]}]},{"id":"dslr","name":"DSLR decline","description":"DSLR decline.","findings":[{"id":"dslr-finding","name":"DSLR decline","description":"DSLR decline.","questions":[{"text":"Why did major makers shift from DSLRs to mirrorless systems, as reported?","kind":"provenance"},{"text":"Is the information current?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"Uses.","layers":[{"id":"astro","name":"Astrophotography","description":"Astrophotography.","findings":[{"id":"astro-finding","name":"Astrophotography","description":"Astrophotography.","questions":[{"text":"Why do astrophotography cameras such as the EOS Ra modify infrared filters?","kind":"provenance"},{"text":"Which entry fits astrophotography?","kind":"action"}]}]},{"id":"video","name":"Video","description":"Hybrid video.","findings":[{"id":"video-finding","name":"Video","description":"Video.","questions":[{"text":"How are mirrorless cameras used for video production?","kind":"provenance"},{"text":"Which entry fits videography?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Explain how mirrorless cameras work and how they differ from reflex cameras.","Help a person use a camera they own, such as with settings and lens choice."],"mustNot":["Give personal purchase advice that favours a brand.","Treat one model as the whole category or present stale model information as current.","Help photograph people in private settings without consent.","Encourage photography where it is prohibited, such as in secure or private areas."],"requiresHuman":["Publishing images of identifiable people taken by the agent."]},"ethics":{"considerations":["Cameras can intrude on privacy; photographs of people need respect for consent."],"affectedParties":["People photographed","Camera users"]},"owners":{"steward":"The person who keeps it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q209871","type":"parent","note":"registry parent class"},{"target":"Q62927","type":"parent","note":"registry parent class"},{"target":"system camera","type":"related","note":"in registry terms"},{"target":"electronic viewfinder","type":"related"},{"target":"Panasonic Lumix DMC-G1","type":"related","note":"instance"},{"target":"digital single-lens reflex camera","type":"related"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.mirrorless-interchangeable-lens-camera","Wikidata: Q209918 (https://www.wikidata.org/wiki/Q209918)"]},"properties":{"applicability":"required","items":["first MILC: Panasonic Lumix DMC-G1, 2008 note","Micro Four Thirds sensor: about 17.3 x 13 mm note","full-frame sensor: 36 x 24 mm note"]},"recognition":{"applicability":"required","items":["Mirrorless system camera","Panasonic Lumix DMC-G1, Panasonic Lumix DMC-G7, Canon EOS Ra, Hasselblad X2D 100C, Hasselblad X2D II 100C, Panasonic Lumix DC-S5","DSLRs use a mirror and optical viewfinder; compacts have fixed lenses; bridge cameras have fixed zooms; rangefinders use separate optical finders","Compact camera bodies with interchangeable lenses and electronic viewfinders or screens."]},"capabilities":{"applicability":"required","items":["explain technology","relay history and formats","describe lens mounts","flag model instances"]},"hazards":{"applicability":"required","items":["Giving purchase advice","Treating models as kinds","Stale model information"]},"interfaces":{"applicability":"required","items":["Lens mount specifications","Radio and battery safety regulations for devices"]},"context":{"applicability":"required","items":["Photography and video with interchangeable lenses.","Micro Four Thirds cameras","APS-C mirrorless cameras","full-frame mirrorless cameras","medium format mirrorless cameras","cinema-oriented hybrids"]}},"sources":[{"title":"Wikidata item Q209918: mirrorless interchangeable-lens camera","url":"https://www.wikidata.org/wiki/Q209918","note":"identity and sense of the item"},{"title":"Wikipedia: Mirrorless camera","url":"https://en.wikipedia.org/wiki/Mirrorless_camera","note":"general description of the item"}],"openQuestions":["The registry aliases for specific camera models should be split off as instances","Should lens mount systems be separate entries?","How should product data be kept current?"],"resources":{"spec":"/models/things/publications/thing-q209918/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q209918/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T23:30:27Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{},"score":1.0}}