This angular resolution calculator will assist you in determining the angular resolution of a lens - the ability of an instrument to distinguish small details of an object.
Angular resolution is the capacity of an optical instrument to separate two objects that are located at a small angular distance. In other words, with this physical quantity, you can check if you can:
Resolve two small points that are very close to each other.
Distinguish between very distant objects that seem close to each other.
The smaller the angular resolution is, the more details you can see. It is essential when designing microscopes, telescopes, or cameras. Even the human eye has its angular resolution!