{
  "asOf": "2026-09-12",
  "source": "Published camera mount engineering specifications",
  "mounts": [
    {
      "slug": "canon-ef",
      "name": "Canon EF",
      "kind": "DSLR (full frame / APS-C)",
      "flangeFocalDistanceMm": 44
    },
    {
      "slug": "canon-ef-m",
      "name": "Canon EF-M",
      "kind": "Mirrorless APS-C",
      "flangeFocalDistanceMm": 18
    },
    {
      "slug": "canon-rf",
      "name": "Canon RF",
      "kind": "Mirrorless full frame",
      "flangeFocalDistanceMm": 20
    },
    {
      "slug": "nikon-f",
      "name": "Nikon F",
      "kind": "DSLR (full frame / APS-C)",
      "flangeFocalDistanceMm": 46.5
    },
    {
      "slug": "nikon-z",
      "name": "Nikon Z",
      "kind": "Mirrorless full frame",
      "flangeFocalDistanceMm": 16
    },
    {
      "slug": "sony-e",
      "name": "Sony E",
      "kind": "Mirrorless (full frame / APS-C)",
      "flangeFocalDistanceMm": 18
    },
    {
      "slug": "sony-a-minolta-af",
      "name": "Sony/Minolta A",
      "kind": "DSLR (full frame / APS-C)",
      "flangeFocalDistanceMm": 44.5
    },
    {
      "slug": "pentax-k",
      "name": "Pentax K",
      "kind": "DSLR (full frame / APS-C)",
      "flangeFocalDistanceMm": 45.46
    },
    {
      "slug": "fujifilm-x",
      "name": "Fujifilm X",
      "kind": "Mirrorless APS-C",
      "flangeFocalDistanceMm": 17.7
    },
    {
      "slug": "micro-four-thirds",
      "name": "Micro Four Thirds",
      "kind": "Mirrorless 4/3in",
      "flangeFocalDistanceMm": 19.25
    },
    {
      "slug": "leica-m",
      "name": "Leica M",
      "kind": "Rangefinder full frame",
      "flangeFocalDistanceMm": 27.8
    },
    {
      "slug": "m42x1-screw-mount",
      "name": "M42×1 screw mount",
      "kind": "Legacy screw mount",
      "flangeFocalDistanceMm": 45.46
    },
    {
      "slug": "t-mount-t2",
      "name": "T-mount / T2 (M42×0.75)",
      "kind": "Astro adapter standard",
      "flangeFocalDistanceMm": 55
    },
    {
      "slug": "c-mount",
      "name": "C-mount",
      "kind": "Machine vision / guide camera",
      "flangeFocalDistanceMm": 17.526
    }
  ]
}