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API · /exposure-api

Photography Exposure API

salutare 3,802 Abbonati

Photographic exposure maths as an API, computed locally and deterministically — the exposure-value, equivalent-exposure and Sunny-16 numbers a photographer, camera-app developer or educator works the exposure triangle with. The exposure-value endpoint gives EV = log₂(aperture² ÷ shutter) and the ISO-100-normalised EV100 (subtracting log₂(ISO/100)) — every one-EV step is a stop, a doubling or halving of light — so bright sun reads about EV 15 and a typical interior EV 6–8, and equal-EV settings give the same exposure. The equivalent endpoint applies the reciprocity at the heart of the triangle: exposure ∝ shutter × ISO ÷ f-number², so when you close the aperture or drop the ISO it returns the new shutter that keeps the brightness constant — going from f/2.8 to f/5.6 needs four times the shutter time. The sunny16 endpoint gives the classic meterless rule: in bright sun shoot f/16 at about 1/ISO (1/125 s at ISO 100), opening up in stops for softer light — slight overcast f/11, overcast f/8, heavy overcast f/5.6, open shade f/4, and f/22 on snow or sand — solving the shutter for your chosen ISO and aperture. Everything is computed locally and deterministically, so it is instant and private. Ideal for camera and photography apps, exposure-calculator and teaching tools, and metering and automation utilities. Pure local computation — no key, no third-party service, instant. 3 compute endpoints. For depth of field and hyperfocal distance use a photography (optics) API.

#photography #exposure #ev #camera #sunny-16 #developer-tools
api.oanor.com/exposure-api
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/api/exposure-api/openapi.json
/api/exposure-api/llms.txt

Individuazione: GET /api/index.json elenca ogni API.

API salute

salutare
Tempo di attività
100.00%
Sondaggi del server · 24 ore su 24
Latenza media
83 ms
Sondaggi del server · 24 ore su 24
Abbonati
3,802
attiva
Chiamate totali
0
ultimi 7 giorni
status Pagina di stato completa → · 4 sonde/24h

Prezzi

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Free

Gratis

  • 8,800 chiamate/mese
  • 2 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 8.800 Aufrufe/Monat
  • 2 req/sec
  • EV + equivalent + Sunny-16
  • Keine Kreditkarte
Accedi per abbonarti

Starter

€7.60 /mese

  • 86,000 chiamate/mese
  • 6 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 86.000 Aufrufe/Monat
  • 6 req/sec
  • Exposure-triangle reciprocity
  • E-Mail-Support
Accedi per abbonarti

Pro

€26.80 /mese

  • 352,000 chiamate/mese
  • 15 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 352.000 Aufrufe/Monat
  • 15 req/sec
  • Camera-App & Teaching-Pipelines
  • Priority-Support
Accedi per abbonarti

Mega

€83.00 /mese

  • 1,620,000 chiamate/mese
  • 40 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 1.620.000 Aufrufe/Monat
  • 40 req/sec
  • Plattform-Skalierung
  • Dedizierte SLA
Accedi per abbonarti

Costruito da

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PremiumApi

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Darkroom API

Analog darkroom and film maths as an API, computed locally and deterministically — the three corrections that bite when you develop film and make prints by hand. The reciprocity endpoint corrects long exposures for reciprocity failure, where film loses sensitivity past about a second: corrected time = metered^p (Schwarzschild p ≈ 1.3 for many films, settable per datasheet), so a metered 10-second exposure really wants about 20 seconds, a full stop more, while anything under the threshold is left untouched. The printexposure endpoint adjusts enlarger exposure when you change print size — light spreads as you raise the head, so exposure is proportional to (magnification + 1)², where magnification is print size ÷ negative size: going from 2× to 4× magnification turns a 10-second exposure into 27.8 seconds, about 1.5 stops, ready for f-stop printing. The pushpull endpoint scales development time for pushing or pulling film by N stops — time = base × factor^stops, roughly +40 % per stop pushed — turning a 7-minute base into 13.7 minutes at +2 stops, or 5 minutes pulled a stop. Everything is computed locally and deterministically, so it is instant and private. Ideal for film-photography and darkroom apps, light-meter and timer companions, lab and workshop tools, and analog-photography sites. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 compute endpoints. For digital depth-of-field use a photography API; for lab molarity use a dilution API.

api.oanor.com/darkroom-api

Photography Calculator API

Camera and optics maths as an API. The depth-of-field endpoint computes the near and far limits of sharp focus, the total depth of field and the hyperfocal distance from a focal length, aperture and focus distance, using the circle of confusion for your sensor format — full-frame, APS-C, Micro Four Thirds, 1-inch, medium format, Super 35 and more, or your own value. The field-of-view endpoint gives the horizontal, vertical and diagonal angle of view for a focal length on a given sensor, plus the crop factor and the 35 mm-equivalent focal length. The exposure endpoint computes the exposure value (EV) from aperture, shutter speed and ISO, and can also solve for the shutter speed or aperture that hits a target EV. Everything is computed locally and deterministically, so it is instant and private. Ideal for photography and videography apps, camera and lens tools, focus-stacking and landscape planning, and teaching exposure and optics. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This computes camera optics; for reading EXIF metadata from photo files use an EXIF API.

api.oanor.com/photography-api

EXIF API

Extract the hidden metadata baked into a photo. Pass an image URL (we fetch it) or a base64 image and get back its EXIF, GPS, IPTC and XMP data: the camera make and model, lens, software, the capture date/time, full exposure settings (shutter speed, aperture / f-number, ISO, focal length, flash, metering and white balance), orientation, colour space and resolution, plus the GPS location (latitude, longitude, altitude) with a ready Google Maps link — and the complete raw tag map. A dedicated /v1/gps endpoint returns just the geotag. Supports JPEG, TIFF, HEIC and PNG. Parsing runs locally (no third-party service) and nothing is stored. Live. 3 endpoints. Built for photo-management apps, geotagging, digital forensics, copyright/credit checks and image pipelines. Distinct from a basic image-info or resize service. No upstream key.

api.oanor.com/exif-api

Battery Pack API

Battery-Pack-Design-Mathematik als API, lokal und deterministisch berechnet – die Spannungs-, Kapazitäts-, Energie-, Strom- und Ladezeit-Zahlen, die ein EV-, E-Bike-, Solar- oder Robotik-Pack-Bauer für eine Batterie aufstellt. Der Konfigurations-Endpunkt wandelt eine Serien-Parallel-Zellenanordnung in das Pack um: Zellen in Reihe addieren ihre Spannungen (die Serienanzahl bestimmt die Packspannung) und Zellen parallel addieren ihre Amperestunden (die Parallelanzahl bestimmt die Kapazität), wobei die Energie in Wattstunden = Spannung × Kapazität – ein 13S4P-Pack aus 3,6 V / 3,5 Ah Zellen ergibt 46,8 V, 14 Ah und etwa 655 Wh aus 52 Zellen, und es meldet auch die Vollladespannung (Serie × 4,2 V für Li-Ion) zur Dimensionierung des Ladegeräts und BMS. Der C-Rate-Endpunkt bezieht Strom auf Kapazität in beide Richtungen – geben Sie eine C-Rate ein, um den Strom zu erhalten, oder einen Strom, um die C-Rate zu erhalten – weil 1C die gesamte Kapazität in einer Stunde lädt oder entlädt, also ein 14-Ah-Pack bei 2C 28 A ergibt, und es gibt die Leistung zurück, wenn Sie die Packspannung übergeben. Der Ladezeit-Endpunkt gibt die Zeit zum Laden zwischen zwei Ladezuständen aus dem Ladestrom an. Alles wird lokal und deterministisch berechnet, daher ist es sofort und privat. Ideal für EV- und E-Bike-Bauer, Solar- und Off-Grid-Speicherwerkzeuge, Robotik- und Drohnen-Packs sowie Batterie-Engineering-Apps. Reine lokale Berechnung – kein Key, kein Drittanbieter-Dienst, sofort. Pack-Design-Schätzungen – echte Zellen verjüngen sich beim Laden und sinken unter Last. 3 Berechnungs-Endpunkte. Für die Laufzeit unter Last verwenden Sie eine Battery-API; für EV-Ladung eine EV-Charging-API.

api.oanor.com/batterypack-api

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Come ottengo una chiave API per Photography Exposure API?
Registrati gratuitamente su oanor.com, genera una chiave API dalla dashboard sviluppatore e chiama Photography Exposure API con l'header x-oanor-key. Nessuna carta di credito richiesta per il piano gratuito.
Qual è il limite di velocità di Photography Exposure API?
Il piano gratuito consente 1 richiesta al secondo. I piani a pagamento arrivano fino a 50 richieste al secondo nel piano Mega. I limiti rigorosi restituiscono HTTP 429 oltre la quota — nessuna spesa imprevista.
Quanto costa Photography Exposure API?
Photography Exposure API ha un piano gratuito con 100 chiamate / mese. I piani a pagamento partono da €7.60 / mese con quote più alte e limiti di velocità più rapidi.
Posso cancellare l'abbonamento in qualsiasi momento?
Sì. I piani sono fatturati mensilmente e puoi cancellare in qualsiasi momento dalla dashboard di fatturazione. Nessun contratto a lungo termine e nessuna penale di cancellazione.
Photography Exposure API è conforme al GDPR?
Tutte le richieste a Photography Exposure API passano attraverso il nostro gateway in UE. La tua chiave upstream non lascia mai il nostro server e nessun dato personale viene condiviso con il fornitore upstream oltre alla richiesta inviata.

Scegli un endpoint dall'elenco a sinistra per visualizzarne i dettagli e provarlo.

Frammenti di codice

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curl https://api.oanor.com/exposure-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/exposure-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/exposure-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/exposure-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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