Frame
A single still image in the continuous sequence that makes up a motion picture.
Frame
noun | Camera & Optics
A single still image within the continuous series of images that constitutes a motion picture. When projected or played back in rapid succession, frames create the illusion of continuous movement. In digital cinema, a frame is a discrete data sample captured by the sensor at a specific moment in time.
Quick Reference
| Also Known As | Still frame, image frame |
| Domain | Camera & Optics + Production |
| Also Used In | Post-Production (frame-accurate editing), Screenwriting (frame as a compositional unit) |
| Related Terms | Shot, Scene, Sequence, Frame Rate, Cut |
| Difficulty | Foundational |
The Explanation: How & Why
Motion pictures create the illusion of movement through persistence of vision: when still images are displayed in rapid sequence, the human visual system perceives them as continuous motion. Each individual image in that sequence is a frame.
Frame rate determines how many frames are captured and displayed per second. The industry standard for narrative cinema is 24 frames per second (fps), established in the late 1920s when synchronised sound required a consistent speed to maintain audio fidelity. Television and broadcast settled on different standards: 29.97fps in NTSC regions (North America, Japan), 25fps in PAL regions (Europe, Australia).
The frame is also a compositional unit. When a director or cinematographer talks about what is "in frame" or "out of frame," they are describing whether a subject falls within the boundaries of the image rectangle. The frame edge defines what the audience sees and, just as importantly, what they do not. Every element visible to the camera is either inside the frame, outside it, or on the boundary.
In post-production, editing systems reference individual frames by timecode, allowing frame-accurate cuts. An edit that is one frame early or one frame late produces a perceptibly different result, which is why professional editors work in frame-accurate timelines and why timecode counts frames as the smallest addressable unit.
Historical Context & Origin
The concept of the frame predates cinema. Sequential still photography experiments by Eadweard Muybridge in the 1870s captured animal locomotion in individual frames to study motion invisible to the naked eye. Thomas Edison and William Dickson's Kinetoscope (1891) used 35mm film perforated to advance frame by frame through the gate at a fixed rate. The 35mm frame size -- 18mm x 24mm for the silent era Academy aperture -- became a foundational standard that persists in modified form in contemporary digital cinema sensor dimensions.
How It's Used in Practice
Scenario 1 — On Set (Camera Department): A focus puller examining a clip from the previous take scrubs frame by frame through the playback on a SmallHD monitor to confirm whether the subject's eyes were in focus during the peak of a move. An individual frame shows the critical sharpness detail that is invisible at normal playback speed.
Scenario 2 — Post-Production (Editor): An editor cutting a dialogue scene finds that a reaction shot begins one frame too early, catching an actor's eye movement before the line is delivered. The editor trims the cut point by a single frame -- 1/24th of a second -- and the timing corrects the performance.
Scenario 3 — Production (Director): During a visual effects shot on a sci-fi short, the director specifies the exact frame at which a practical explosion must begin so that a CG element added in post will be properly synchronised. The VFX supervisor notes the frame number from timecode and uses it as the composite trigger.
Usage Examples in Sentences
"Check frame 847 -- the subject blinks right as we cut."
"The compositor needs the frame range for the VFX shot: frames 1024 through 1186 inclusive."
"At 24 frames per second, one frame of motion blur covers 1/48th of a second of real time with a 180-degree shutter angle."
"The director wanted to hold the final frame as a freeze for two seconds before the title card appears."
Common Confusions & Misuse
Frame vs. Shot: A frame is a single still image. A shot is a continuous uninterrupted sequence of frames recorded in a single camera run. A shot consists of many frames; a frame is not a shot. The confusion arises because both words are used when describing what the camera captures -- but their scale is completely different.
Frame vs. Take: A take is a single performance of a shot, identified on the slate. One take contains hundreds or thousands of frames. A frame is the smallest indivisible unit; a take is an organisational unit.
Variations by Context
| Context | How "Frame" Applies |
|---|---|
| Narrative Cinema | 24fps is standard; each frame carries motion blur from a 180-degree shutter angle |
| Broadcast / Television | 25fps (PAL) or 29.97fps (NTSC) -- frame count per second differs from cinema standard |
| Digital Stills | A single captured image from a camera in photo mode; no sequential relationship implied |
| Animation | Frames are individually drawn or rendered; frame-by-frame control is the basis of the craft |
| VFX / Compositing | Frame number is the primary reference for element synchronisation and render scheduling |
Related Terms
- Shot -- A shot is a continuous sequence of frames captured in a single camera run, the next unit up from the frame
- Scene -- A scene is a dramatic unit made up of multiple shots, each composed of many frames
- Frame Rate -- The number of frames captured or displayed per second; determines the motion quality of the image
- Cut -- An edit point between two shots, occurring at a specific frame boundary
- Sequence -- A series of scenes linked by narrative logic, themselves composed of frames
See Also / Tools
Use the Slow Motion Calculator to calculate how many frames your camera needs to capture to produce a given slowdown factor at your playback frame rate. For timecode and frame number conversions, the Timecode Calculator converts between hours:minutes:seconds:frames and total frame counts at any standard frame rate.
