Unit of measurement for exposure changes — one stop doubles or halves the amount of light. The foundation of all exposure calculations.
The aperture values follow a standardized series: f/1.0, f/1.4, f/2.0, f/2.8, f/4.0, f/5.6, f/8.0, f/11, f/16, f/22. Each stop reduces the amount of light by a factor of √2 (≈1.414). Modern cameras operate with 1/3-stops (0.33 EV) or 1/2-stops (0.5 EV) for more precise exposure adjustments. The mathematical basis is derived from the ratio of focal length to the iris's aperture diameter. For cinema lenses, the T-stop scale is often used, which indicates the actual light transmission value and accounts for lens losses.
The stop system evolved from early 19th-century photography. In 1895, the Royal Photographic Society standardized the f-number notation. Its cinematographic application became established with the first professional film cameras around 1920. The introduction of T-stops by the Society of Motion Picture and Television Engineers (SMPTE) in the 1960s significantly improved accuracy in film productions.
Cinematographer Roger Deakins frequently uses T/2.0-2.8 for his characteristic depth of field in films like "Blade Runner 2049". For outdoor daylight shots, T/5.6-8.0 are typically used, while night scenes often require T/1.4-2.0. Precise stop control allows for consistent exposure between different camera positions. Emmanuel Lubezki used constant T/2.8 settings for "The Revenant" to maintain the natural image mood with available light.
Stops differ from ISO and shutter speeds in their direct mechanical influence on depth of field. While ISO changes affect image noise and shutter adjustments alter motion blur, the aperture remains the primary creative tool for depth of field control. Variable ND filters (Neutral Density) offer alternative light reduction without changing depth of field. Modern digital cameras allow for post-production corrections, but in-camera aperture selection remains crucial for optical image quality.
Ich nutze Blendenstufen als primäres Werkzeug für die Schärfentiefe-Gestaltung – bei T/1.4 isoliere ich Protagonisten vom Hintergrund, während T/5.6 für Ensemble-Szenen alle Akteure scharf hält. Die präzise 1/3-Stop-Kontrolle an modernen Cine-Objektiven ermöglicht mir seamless Matching zwischen A- und B-Kamera, besonders bei komplexen Lighting-Setups mit mehreren Kamerapositionen.
Blendenstufen bestimmen die emotionale Tiefe meiner Bilder – offene Blenden bei T/2.0 schaffen Intimität und lenken den Fokus auf Gesichtsausdrücke, während geschlossene Blenden bei T/8.0 die Umgebung als narratives Element einbeziehen. Ich plane Blendenwechsel als dramaturgisches Mittel, um zwischen subjektiver Charakterperspektive und objektiver Erzählhaltung zu wechseln.
Blendenwahl beeinflusst direkt meine Beleuchtungskosten – offene T-Stops reduzieren den HMI-Bedarf um bis zu 75%, während geschlossene Blenden teure Zusatzbeleuchtung erfordern. Bei Low-Budget-Produktionen plane ich Drehtage um Available Light und T/1.4-2.0, was Gaffer-Stunden spart und Location-Flexibilität erhöht.
1. Was beschreibt „Blendenstufe" am besten?
2. Zu welchem Department gehört „Blendenstufe"?
3. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?
The Lexikon is part of the Filmfarm ecosystem — alongside budgeting (FilmBalance), an industry magazine (FilmCircus) and crew networking (FilmCall, CrewMesh). One shared vocabulary for the whole production.