{"uid":"cap_WaM6l_PQfCzJEmUjNxRjZ","slug":"saylor-innovations-lens-field-of-view-calculator-e825c4e4","name":"Saylor Innovations Lens Field of View Calculator","description":"Horizontal/vertical/diagonal FOV, equivalent focal length, coverage at distance and focal length to frame a subject","url":"https://saylorinnovations.com/api/photo/field-of-view?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","POST","PUT","PATCH","DELETE","HEAD"],"type":"string"},"queryParams":{"type":"object","properties":{"sensor":{"type":"string","description":"optional full_frame, aps_c_nikon_sony, aps_c_canon, micro_four_thirds, one_inch, medium_format_44x33, medium_format_645, super35, phone_1_over_1_3; default full_frame (query)"},"f_number":{"type":"string","description":"optional, to compute equivalent aperture (query)"},"focal_mm":{"type":"string","description":"optional focal length in mm (query)"},"distance_m":{"type":"string","description":"optional subject distance in meters (query)"},"orientation":{"type":"string","description":"optional landscape (default) or portrait (query)"},"subject_width_m":{"type":"string","description":"optional width of the subject or scene to frame (query)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object"},"description":{"type":"string"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SlHkYB-5SoZ-1Wfp824Ah","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates horizontal, vertical, and diagonal field of view angles, equivalent focal length, and scene coverage dimensions for a given camera sensor, focal length, distance, and orientation.","exampleAgentPrompt":"What's the field of view for a 35mm lens on an APS-C Nikon/Sony sensor in portrait orientation, and how wide a scene will it cover at 8 meters?","exampleUseCases":[{"title":"Wildlife photographer lens selection","prompt":"I'm shooting birds at about 30 meters on a micro four thirds camera with a 300mm lens — what are the horizontal and vertical field of view angles and how wide a scene will I capture?"},{"title":"Video filmmaker sensor comparison","prompt":"Compare the field of view for a 50mm lens on a full frame sensor versus a Super 35 sensor — what are the horizontal and vertical FOV angles and equivalent focal lengths for each?"},{"title":"Portrait framing at a specific distance","prompt":"I want to frame a subject that's 0.6 meters wide using a full frame camera at 3 meters distance — what focal length do I need and what will the FOV angles be in landscape orientation?"}],"resultDescription":"Returns horizontal, vertical, and diagonal FOV angles in degrees; the 35mm equivalent focal length; scene coverage width and height at the specified distance; and optionally the equivalent aperture if f-number is provided. All values are computed based on sensor crop factor and standard lens geometry formulas.","failureModes":["Invalid or unrecognized sensor type returns an error or defaults to full frame","Non-numeric focal_mm or distance_m values cause a 400 bad request","Missing required computation inputs may return null or incomplete fields","Very extreme focal lengths (e.g. 0mm or negative) likely produce invalid results","API payment failure (402) if x402 payment is not provided or insufficient"],"whenToPreferThis":"Choose this endpoint when you need precise optical geometry calculations for a specific camera sensor and focal length combination, especially when comparing across sensor formats or computing exact scene coverage at a known distance. It is preferable over generic photography advice when you need numeric FOV angles or coverage dimensions for planning a shoot, selecting a lens, or verifying framing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:24.613Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-lens-field-of-view-calculator-e825c4e4"}