focal ratio Antonyms
No Synonyms and anytonyms found
Meaning of focal ratio
Wordnet
focal ratio (n)
the ratio of the focal length to the diameter of a (camera) lens system
focal ratio Sentence Examples
- The focal ratio of a telescope determines the light-gathering ability and image brightness.
- A smaller focal ratio allows more light to reach the sensor, resulting in brighter images.
- The focal ratio of a lens is calculated by dividing the focal length by the aperture diameter.
- A lens with a larger focal ratio will have a narrower depth of field and a more telephoto effect.
- The optimal focal ratio for astrophotography depends on the camera sensor and the specific celestial object being imaged.
- In cinematography, the focal ratio is often referred to as the "f-stop" and can be adjusted to control exposure and depth of field.
- The focal ratio of a microscope affects the magnification and working distance.
- A microscope with a lower focal ratio will provide higher magnification but a shorter working distance.
- The focal ratio of a beam profiler is crucial for accurately measuring the beam quality of a laser.
- The focal ratio of a projector determines the size and sharpness of the projected image.
FAQs About the word focal ratio
the ratio of the focal length to the diameter of a (camera) lens system
No synonyms found.
No antonyms found.
The focal ratio of a telescope determines the light-gathering ability and image brightness.
A smaller focal ratio allows more light to reach the sensor, resulting in brighter images.
The focal ratio of a lens is calculated by dividing the focal length by the aperture diameter.
A lens with a larger focal ratio will have a narrower depth of field and a more telephoto effect.
