{
 "slug": "standard-lens",
 "name": "Standard (50mm)",
 "category": "lens",
 "group": "Focal length",
 "media": [
  "image",
  "video"
 ],
 "checked": "2026-10-13",
 "effect": "Neutral, human-eye perspective: honest and unshowy.",
 "use_when": "Observational and documentary shots, a whole film shot on one lens.",
 "phrase": "50mm lens, natural human-eye perspective, nothing stretched or compressed",
 "pitfalls": [
  {
   "text": "For stills, practitioners write a full capture line with an aperture (35mm, f/1.8); a 2025 study for Midjourney found f-stops ignored and plain words (blurred background) working. Plain words first, the number as support.",
   "evidence": "practitioner",
   "source": "Dan Kieft (1 Sep 2026) via Director Chair field notes on image prompting; Midjourney mapping in our own notes (2025, to audit)"
  },
  {
   "text": "Degrees mean different things per tool: Camera Control uses a vertical field of view (29 degrees is about 50mm), Higgsfield's tested prompts a diagonal one (29 degrees is about 85mm). Say which, or give the focal length.",
   "evidence": "measured",
   "source": "Camera Control (aicameracontrol.com), its framing label read on 13 Oct 2026 by placing the subject in the 3D stage and Director Chair field notes on video prompting"
  }
 ],
 "per_model": [
  {
   "model": "seedance-2.5",
   "phrase": "47 degree diagonal field of view, camera 2 to 4 metres from the subject, no lens drift",
   "evidence": "vendor",
   "checked": "2026-09-28"
  },
  {
   "model": "nano-banana-pro",
   "phrase": "50mm lens",
   "evidence": "vendor",
   "checked": "2026-09-29"
  }
 ],
 "external_refs": [
  {
   "site": "aicameracontrol",
   "url": "https://aicameracontrol.com/",
   "what": "a free 3D stage to place the person and set the lens before you generate"
  },
  {
   "site": "shotdeck",
   "url": "https://shotdeck.com/",
   "what": "real film frames tagged by colour, lighting, time of day and composition (paid, link only)"
  },
  {
   "site": "flim",
   "url": "https://flim.ai/",
   "what": "film, ad and music-video stills to search by text or image (free tier, link only)"
  }
 ],
 "licensed": [],
 "site_names": [],
 "related": [
  "normal-wide-lens",
  "portrait-lens"
 ],
 "rights": "own-work",
 "evidence": "film-craft",
 "source": {
  "url": null,
  "note": "Field-of-view table from Higgsfield's tested Seedance prompts, via Director Chair field notes on video prompting"
 },
 "body": "",
 "shown_with": null,
 "url": "https://directorchair.ai/lens/standard-lens",
 "markdown": "https://directorchair.ai/lens/standard-lens.md",
 "prompts": {
  "nano-banana-pro": "[your subject] in [your setting].\nCapture: 50mm lens",
  "nano-banana-2": "[your subject] in [your setting].\nCapture: 50mm lens",
  "gpt-image": "A photograph of [your subject] in [your setting].\nDetails: 50mm lens, natural human-eye perspective, nothing stretched or compressed\nExclusions: no extra text, no watermark, no logo.",
  "seedream-5": "[your subject] in [your setting].\nCapture: 50mm lens, natural human-eye perspective, nothing stretched or compressed",
  "seedance-2.5": "Scene: [your subject] in [your setting].\nShot 1 (0:00 to 0:05): one continuous shot\nOptics and camera: 47 degree diagonal field of view, camera 2 to 4 metres from the subject, no lens drift.",
  "seedance-2.0": "Scene: [your subject] in [your setting].\nShot 1: one continuous shot\nOptics and camera: 47 degree diagonal field of view, camera 2 to 4 metres from the subject, no lens drift.",
  "kling-3": "[your subject]. The scene is [your setting]. 50mm lens, natural human-eye perspective, nothing stretched or compressed.",
  "veo-3.1": "50mm lens, natural human-eye perspective, nothing stretched or compressed. [your subject] in [your setting]. Framing and subject stay as in the start image."
 },
 "licence": {
  "code": "MIT",
  "text": "CC BY 4.0",
  "third_party": "Clips and card texts inside a \"licensed\" block belong to their makers and are shown with permission and credit."
 }
}