Last Updated 4 months ago
1?-Type Sensor
Definition
A 1?-type sensor refers to a video camera sensor format measuring approximately 13.2 × 8.8 mm, with a diagonal of about 15.9 mm. Despite the name, it is not actually one inch in size—a legacy naming convention carried over from the early days of television tube cameras.
This sensor type is common in compact digital cameras, camcorders, and broadcast video systems, striking a balance between image quality, lens versatility, and depth of field control. [read more]
1 kHz Tone
Definition
A 1 kHz tone (one kilohertz tone) is a standard reference audio signal used to calibrate, align, and monitor sound levels in film, television, and broadcast production. The tone is a pure sine wave with a frequency of 1,000 cycles per second, typically recorded or played back at a reference level such as -20 dBFS (digital) or 0 VU (analog).
This tone ensures that audio systems—from set recording devices to post-production mixing consoles and broadcast transmitters—are all working at consistent and compatible levels.
1K (1,000 Watt) Light
Definition
A 1K light—also known as a 1,000-watt tungsten fixture—is a standard lighting unit used in film and television production. It typically refers to a 1K Fresnel or open-face quartz light that draws approximately 1 kilowatt (1,000 watts) of power and produces a warm 3200K tungsten-balanced light output.
For decades, the 1K was one of the most common fixtures on lighting trucks, used for everything from key lights and fills to accents and background illumination.
1.2K HMI
Definition
A 1.2K HMI (1,200-watt Hydrargyrum Medium-Arc Iodide) is a daylight-balanced lighting fixture widely used in film and television production. It produces a powerful 5600K color temperature, closely matching natural sunlight, and is ideal for small to mid-scale location work, interviews, and exterior fill lighting.
HMIs are known for delivering high-intensity output with excellent color rendering, making them a staple for professional lighting setups that require daylight precision.
1:1 Aspect Ratio
Definition
The 1:1 aspect ratio describes an image that is perfectly square—its width and height are equal. This format produces a balanced, centered composition and is commonly associated with medium-format photography, social media platforms like Instagram, and modern artistic filmmaking that aims to evoke nostalgia, intimacy, or confinement.
In filmmaking, aspect ratio refers to the proportional relationship between an image’s width and height, and the 1:1 ratio stands out as one of the most visually distinctive and emotionally expressive formats.
1:1 Backup / Mirror — Identical data duplication used by DITs for checksum-verified camera offloads.
1:1 Pixel Readout — Sensor mode where each pixel is read once with no binning, preserving detail and minimizing aliasing.
1:1 Ratio (Lighting) — In lighting, an equal key/fill ratio meaning no contrast—flat illumination.
1:1 Reproduction (Macro) — Macro focus ratio where the subject projects life-size on the sensor (1× magnification).
1.33:1 (4:3) — Classic Academy-era or early television aspect ratio, often revived for stylistic choices.
1.37:1 Academy Ratio — Standardized aspect ratio from early sound cinema (used by Hitchcock, Wilder, etc.).
1.43:1 IMAX (15/70) — Tall large-format aspect used in 70 mm IMAX film projection.
1.66:1 European Widescreen — Early widescreen cinema standard, common in mid-century European films.
1.78:1 (16:9) — Modern HDTV and streaming aspect ratio; standard for digital acquisition and delivery.
1.85:1 — Most common theatrical widescreen ratio for modern narrative cinema.
1.90:1 (IMAX Digital) — Slightly wider than 16:9, used in digital IMAX presentations.
1-Bit Alpha — Binary transparency (on/off) channel used in graphic overlays or old-school compositing.
1-Light (One-Light) Transfer/Grade — Film or digital scan balanced globally with a single color-correction setting.
1-Liner (One-Liner) — A condensed version of the shooting schedule showing one line per scene, organized by day.
1-Pass Encode — Single-pass compression method trading accuracy for speed.
1-Sheet (One-Sheet) — Standard theatrical poster format (27 × 40 inches) used for film marketing.
1-Stop — Doubling or halving of light or exposure; shorthand for a one-stop adjustment.
1-Ton Grip/Electric Package — A small G&E truck package category, typically ~10–14 ft cube van with a minimal light and grip kit.
1-U (Rack Unit) — Standard measurement for rack-mounted gear, equal to 1.75 inches of vertical space.
1/r² (Inverse-Square Law) — Lighting principle stating intensity decreases proportionally to the square of distance.
1/4-20 UNC Thread — Standard camera/rigging screw thread used on tripods, cages, and accessories.
1/4-Stop / 1/8 / 1/2 (Diffusion, Gel, or Filter) — Fractional densities indicating fine steps in diffusion, ND, or color-correction strength.
1-1/8? Junior (Receiver/Pin) — Standard large-fixture mount size on stands and rigging gear; mates with Junior receivers.
1-1/4? Speed Rail — Schedule-40 aluminum pipe size used for overheads, grids, and rigging.
1st AC (First Assistant Camera / Focus Puller) — Camera crew member responsible for pulling focus, lens changes, and maintenance.
1st AD (First Assistant Director) — Department head who manages schedule, safety, and daily set operations.
1st AE (First Assistant Editor) — Supervises the assistant editing team, turnovers, and data conform in post.
1st Fix — Art department/set-construction phase before finishing surfaces are applied.
1st Positions (“Back to One”) — Command to reset actors and camera to starting marks before another take.
1st Team — Principal cast (actors) called to set for blocking or takes, as opposed to stand-ins (“2nd Team”).
1st Unit — Main shooting crew for principal photography; contrasts with 2nd Unit handling stunts or inserts.
1x Net / 1x Scrim — Single-density diffusion or scrim in grip terminology; half the density of a 2x.
1× Macro / 1:1 Macro — Lens capable of life-size reproduction; see also 1:1 Reproduction.
1×1 LED Panel — Standard square LED light format (e.g., Litepanels Astra, Gemini 1×1).
1×2 LED Panel — Rectangular LED panel roughly 1 ft × 2 ft; common for key/fill applications.
10-Bit / 12-Bit / 16-Bit — Bit depth values indicating tonal precision and dynamic range in log or RAW workflows.
10-1
10-2
1080p / 1080i (Full HD) — 1920×1080 pixel recording or delivery format (progressive/interlaced).
120 fps / 144 fps — High-frame-rate capture speeds for smooth slow motion or HFR playback.
120 V (North America) — Standard AC line voltage for most film-set electrical distribution.
180-Degree Rule — Continuity rule maintaining screen direction across an established axis.
180-Degree Shutter (? 1/48 at 24 fps) — Traditional motion-blur standard yielding natural cinematic movement.