# focal ratio definition

• noun:
• the proportion regarding the focal size towards diameter of a (digital camera) lens system
• the proportion of the focal size towards the diameter of a (camera) lens system
• the proportion for the focal size towards the diameter of a (camera) lens system
• the ratio associated with focal size towards diameter of a (digital camera) lens system
• the ratio of this focal length toward diameter of a (digital camera) lens system
• the proportion for the focal size on diameter of a (digital camera) lens system

## Related Sources

• Definition for "focal ratio"
• the proportion regarding the focal size towards diameter…
• Hypernym for "focal ratio"
• ratio