For the formula 1 / u + 1 / v = 1 / f, what is infinite depth of field or hyperfocal distance? In other words, when u, v, and f, we have infinite depth of field or hyperfocal distance?
Hyperfocal distance itself doesn't really have anything to do with the lens formula you quote.
The formula for hyperfocal distance is (approximate, but good enough in practice):
H = f² / (Nc)
- H: hyperfocal distance
- f: focal length
- N: f-number (aperture)
- c: circle of confusion diameter limit
To apply that to the lens formula: the hyperfocal distance is the object distance u. Fill that in, and the focal length, and then you can calculate image distance.
I'm not sure what the practical use for that is though.