{
  "envelope_version": "1",
  "kind": "chart",
  "payload": {
    "chart_id": "electronics-cameras-mirrorless-brands",
    "category_id": "electronics.cameras.mirrorless",
    "edition": "2026-w42",
    "previous_edition": null,
    "lineup_changed": false,
    "panel_changed": false,
    "movement_basis": null,
    "methodology": "ACM-1.0-chart-draft",
    "sample_data": false,
    "precision_label": "measured",
    "as_of": "2026-10-16T15:40:00Z",
    "conditions": {
      "mode": "closed_book",
      "gateway": "openrouter",
      "pinned_providers": true,
      "web_search": false,
      "grounding": false,
      "tools": false,
      "retrieval": "disabled",
      "structured_output": true,
      "max_attempts": 1,
      "languages": [
        "en"
      ],
      "paraphrases_per_language": 2,
      "presentation_arm": "facts_card",
      "representative_rule": "brand_names_only_v1",
      "allow_none": false,
      "as_of": "2026-10-16T15:40:00Z",
      "presentation": "brand_names_only"
    },
    "prereg_hash": "1515966b3a316539f064a9cac61ff588e9f8a8af637d04604633e63ac43a53ac",
    "ci_level": 0.95,
    "ci_method": "bootstrap_wilson_mover",
    "movement_ci_method": "mover_independent",
    "multiplicity": "per_entry_unadjusted",
    "event_ci_method": "mover_paired",
    "tiers_method": "max_t_leader_step_down",
    "set_size": 4,
    "scenarios_n": 55,
    "panel": [
      {
        "judge_id": "jdg-live-claude-haiku-5-5-20261007-or-v1",
        "model_label": "anthropic/claude-haiku-5.5-20261007 @ claude-haiku-5.5-20261007 via OpenRouter",
        "gateway": "openrouter",
        "family": "anthropic",
        "weight": 0.2
      },
      {
        "judge_id": "jdg-live-gpt-6-luna-20260922-or-v1",
        "model_label": "openai/gpt-6-luna-20260922 @ gpt-6-luna-20260922 via OpenRouter",
        "gateway": "openrouter",
        "family": "openai",
        "weight": 0.2
      },
      {
        "judge_id": "jdg-live-gemini-4-argon-20261013-or-v1",
        "model_label": "google/gemini-4-argon-20261013 @ gemini-4-argon-20261013 via OpenRouter",
        "gateway": "openrouter",
        "family": "google",
        "weight": 0.2
      },
      {
        "judge_id": "jdg-live-mistral-large-4-0-20261006-or-v1",
        "model_label": "mistralai/mistral-large-4-0-20261006 @ mistral-large-4-0-20261006 via OpenRouter",
        "gateway": "openrouter",
        "family": "mistral",
        "weight": 0.2
      },
      {
        "judge_id": "jdg-live-deepseek-v4-1-flash-20260910-or-v1",
        "model_label": "deepseek/deepseek-v4.1-flash-20260910 @ deepseek-v4.1-flash-20260910 via OpenRouter",
        "gateway": "openrouter",
        "family": "deepseek",
        "weight": 0.2
      }
    ],
    "entries": [
      {
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        "position": 1,
        "share": 0.588953,
        "ci_low": 0.477998,
        "ci_high": 0.696706,
        "scenarios_n": 44,
        "tier": 1,
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        "rank_high": 5,
        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Fujifilm",
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        "ci_low": 0.325423,
        "ci_high": 0.535715,
        "scenarios_n": 43,
        "tier": 1,
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        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Canon",
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        "ci_low": 0.2992,
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        "scenarios_n": 44,
        "tier": 1,
        "rank_low": 1,
        "rank_high": 7,
        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Nikon",
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        "ci_low": 0.249798,
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        "scenarios_n": 45,
        "tier": 1,
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        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "OM System",
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        "ci_low": 0.162873,
        "ci_high": 0.376716,
        "scenarios_n": 45,
        "tier": 1,
        "rank_low": 1,
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        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Panasonic",
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        "share": 0.17999,
        "ci_low": 0.102122,
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        "scenarios_n": 44,
        "tier": 2,
        "rank_low": 2,
        "rank_high": 9,
        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Leica",
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        "share": 0.139002,
        "ci_low": 0.066654,
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        "scenarios_n": 44,
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        "rank_low": 3,
        "rank_high": 10,
        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Hasselblad",
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        "share": 0.077273,
        "ci_low": 0.02826,
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        "scenarios_n": 44,
        "tier": 2,
        "rank_low": 5,
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        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Blackmagic Design",
        "position": 9,
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        "ci_low": 0.010958,
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        "scenarios_n": 43,
        "tier": 2,
        "rank_low": 7,
        "rank_high": 10,
        "below_leader": true,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      },
      {
        "brand": "Sigma",
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        "share": 0.025026,
        "ci_low": 0.006691,
        "ci_high": 0.079128,
        "scenarios_n": 44,
        "tier": 2,
        "rank_low": 6,
        "rank_high": 10,
        "below_leader": false,
        "movement": null,
        "weeks_on_chart": 1,
        "new": true
      }
    ],
    "withheld_brands": [],
    "events": [],
    "disclosure": "brand_names_only"
  },
  "payload_sha256": "0f2531413707bd652fa6c4b29ac74fd65c76547baf58369bb846a56aced912e3",
  "signature": {
    "alg": "EdDSA",
    "kid": "FnG9tqyrr6Y0YUh6teXhpERjAKUSfzL78m4WdnEZ9Jg",
    "key_class": "production",
    "jws": "eyJhbGciOiJFZERTQSIsImN0eSI6ImNoYXJ0Iiwia2lkIjoiRm5HOXRxeXJyNlkwWVVoNnRlWGhwRVJqQUtVU2Z6TDc4bTRXZG5FWjlKZyIsInR5cCI6InBpY2tiZW5jaC1zbmFwc2hvdCtqd3MifQ..B0UmMJyM3XE1jbbwgD8GaxenM3jduE58p8LZ-_f7Q5G-i3ifimDt7e8_Ca0v7eMkZFxlavNTWzdW22Dn1h89Cw"
  }
}