autoexposure
C1Technical / Specific-use
Definition
Meaning
A camera function that automatically calculates and sets the correct exposure (aperture, shutter speed, and sometimes ISO) for a given scene.
Any automatic process of determining or regulating the amount of light, or more metaphorically, the degree of attention or scrutiny applied to something. In a broader technical sense, it can refer to automated adjustment of sensitivity or intensity.
Linguistics
Semantic Notes
Primarily used in photography, video, and imaging contexts. While a technical term, it's widely understood by amateur photographers. It functions as a noun (the feature/mode) and can be used attributively as an adjective (e.g., autoexposure mode).
Dialectal Variation
British vs American Usage
Differences
No significant lexical or grammatical differences. Spelling follows local conventions: UK English sometimes uses a hyphen (auto-exposure), US English typically uses the solid form 'autoexposure'.
Connotations
None beyond general associations with photography.
Frequency
Frequency is comparable in both varieties, confined to photographic and technical discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject] uses/enables/disables autoexposure.The [camera/device] features/has autoexposure.Switch to/Set [object] to autoexposure.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[None directly associated]”
Usage
Context Usage
Business
Rare, except in marketing copy for cameras or smartphones (e.g., 'Our new phone features advanced autoexposure').
Academic
Used in papers on imaging technology, computer vision, or optics.
Everyday
Common in conversations about photography, camera settings, or smartphone camera features.
Technical
The primary domain. Used in camera manuals, photography tutorials, and imaging software.
Examples
By Part of Speech
verb
British English
- [Not applicable as a verb]
American English
- [Not applicable as a verb]
adverb
British English
- [Not applicable as an adverb]
American English
- [Not applicable as an adverb]
adjective
British English
- The camera's auto-exposure system is surprisingly reliable.
- He prefers to shoot in auto-exposure mode for street photography.
American English
- The camera's autoexposure system is surprisingly reliable.
- She used the autoexposure setting for the quick family portrait.
Examples
By CEFR Level
- My new camera has autoexposure. It is easy to use.
- The photo is dark. Please turn on autoexposure.
- For beginners, using autoexposure is the best way to get good photos.
- If the light changes quickly, autoexposure will adjust the settings for you.
- The camera's sophisticated autoexposure algorithm analysed the high-contrast scene and opted for a multi-zone metering pattern.
- To achieve a consistent look across the film sequence, the director insisted on disabling autoexposure and setting a fixed ISO and aperture.
Learning
Memory Aids
Mnemonic
Think 'AUTOmatic EXPOSURE' – the camera automatically exposes the sensor/film to the correct amount of light.
Conceptual Metaphor
UNDERSTANDING IS SEEING; The camera 'sees' the scene and automatically makes it clear (well-exposed). CONTROL IS MANUAL/AUTOMATIC; Autoexposure represents relinquishing manual control to an automated system.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calques like 'самозаражение' or 'автовоздействие'. The correct Russian equivalent is 'автоэкспозиция' or the phrase 'автоматическая экспозиция'.
- Do not confuse with 'автоэкспозиция' in a medical context (not a standard term).
Common Mistakes
- Using it as a verb (e.g., 'The camera autoexposures the scene' – incorrect; use 'The camera sets the exposure automatically').
- Spelling as two separate words ('auto exposure') is common but often fused or hyphenated in formal writing.
- Confusing 'autoexposure' with 'autofocus' (which controls sharpness, not brightness).
Practice
Quiz
What is the primary function of autoexposure in a camera?
FAQ
Frequently Asked Questions
Very closely related. 'Auto' or 'Automatic' mode typically engages autoexposure AND autofocus, and often locks other settings. Autoexposure specifically refers to the automatic control of aperture, shutter speed, and ISO only.
Avoid it in creative situations where you want precise control over depth of field (aperture) or motion blur (shutter speed), or in tricky lighting conditions (e.g., backlight, snow scenes) where the camera's meter can be fooled.
Autoexposure Lock. It's a button that locks the current exposure settings, allowing you to recompose the shot without the camera changing the exposure.
Yes, selectively. Many professionals use autoexposure modes like Aperture Priority (where they set the aperture, and the camera sets shutter speed) for efficiency, especially in dynamic or rapidly changing conditions.