single-lens reflex: meaning, definition, pronunciation and examples
C2Technical / Formal
Quick answer
What does “single-lens reflex” mean?
A type of camera in which the viewfinder shows the image exactly as it will be captured on the film or sensor, using the same lens for viewing and photographing via a mirror system.
Audio
Pronunciation
Definition
Meaning and Definition
A type of camera in which the viewfinder shows the image exactly as it will be captured on the film or sensor, using the same lens for viewing and photographing via a mirror system.
A camera design (SLR) characterised by an optical system where a mirror reflects the light from the lens into a pentaprism and then to the viewfinder, flipping up at the moment of exposure. The term is often extended to the broader photographic system or the photographer's choice of such equipment.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Both varieties use the full term and the abbreviation 'SLR' equally. The hyphenation in the written form is consistent.
Connotations
Neutral technical term in both varieties. In modern contexts, may carry a slight connotation of traditional, professional, or enthusiast photography versus mirrorless digital systems.
Frequency
The abbreviation 'SLR' is more frequent in casual speech in both varieties. The full term is common in technical writing, manuals, and formal product descriptions.
Grammar
How to Use “single-lens reflex” in a Sentence
[photographer] uses a single-lens reflex[model] is a digital single-lens reflexthe mechanism of a single-lens reflexto switch from a compact to a single-lens reflexVocabulary
Collocations
Examples
Examples of “single-lens reflex” in a Sentence
verb
British English
- N/A
American English
- N/A
adverb
British English
- N/A
American English
- N/A
adjective
British English
- He preferred single-lens reflex photography for its accuracy.
- The single-lens reflex mechanism is quite ingenious.
American English
- She mastered single-lens reflex techniques in her course.
- It was a classic single-lens reflex design.
Usage
Meaning in Context
Business
Used in marketing materials, product specifications, and retail descriptions for cameras and photographic equipment.
Academic
Found in textbooks, journals, and papers on optics, photographic technology, and the history of photography.
Everyday
Used by photography enthusiasts, hobbyists, and professionals when discussing equipment. Less common in general casual conversation.
Technical
The standard precise term in engineering manuals, camera repair guides, and detailed reviews discussing optical paths, mirror mechanisms, and viewfinder systems.
Vocabulary
Synonyms of “single-lens reflex”
Vocabulary
Antonyms of “single-lens reflex”
Watch out
Common Mistakes When Using “single-lens reflex”
- Incorrect hyphenation: 'single lens-reflex' or 'single-lens-reflex'. Correct is 'single-lens reflex'.
- Using 'SLR' as a plural without clarification (e.g., 'I have two SLRs' is fine, 'I have two SLR' is not).
- Confusing it with 'DSLR' when specifically referring to digital models.
FAQ
Frequently Asked Questions
It refers to the reflection (from Latin 'reflectere') of light by a mirror inside the camera body. This mirror reflects the image from the lens up into the viewfinder.
DSLR (Digital Single-Lens Reflex) is a subset. All DSLRs are single-lens reflex cameras, but not all SLRs are digital; many were film-based. 'SLR' is the broader term encompassing both film and digital versions.
Traditional reasons include the experience of an optical viewfinder with no lag, extensive battery life, and a vast selection of existing lenses and accessories from the film and early digital eras.
You pronounce each letter individually: 'S-L-R' (/ˌes el ˈɑːr/).
A type of camera in which the viewfinder shows the image exactly as it will be captured on the film or sensor, using the same lens for viewing and photographing via a mirror system.
Single-lens reflex is usually technical / formal in register.
Phrases
Idioms & Phrases
- “Through the lens (TTL) metering (a key feature of SLRs)”
Learning
Memory Aids
Mnemonic
Think: SINGLE LENS does two jobs – it REFLEX-ively bounces light to your eye and then to the film. One lens, reflecting light.
Conceptual Metaphor
The camera as an extension of the eye (the viewfinder shows exactly what the lens 'sees').
Practice
Quiz
What is the primary functional distinction of a single-lens reflex camera?