ziu1 keoi5焦距
Jyutpingziu1 keoi5
Yalejīu kéuih
Definition
Focal length or focal distance.
neutraltechnology
How it's used
Primarily used in technical contexts like photography, optics, or physics. Outside of these specific fields, it is rarely encountered in casual daily conversation. When discussing cameras, it is often paired with the term 鏡頭 to specify the lens being referenced.
Examples
Do you know what the focal length of this lens is?
Related words
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- QuestionsFrom yes or no questions to asking who, what, where, and when. The patterns you need to ask questions naturally in Cantonese.
- ClassifiersCantonese puts a classifier between a number and a noun, and a bare classifier on its own can mean the. Learn the common ones and how to use them.
- ComparisonsHow to say bigger than, the most, the same as, and not as good as. Cantonese uses 過 where Mandarin uses 比, and that catches a lot of learners out.



