I have 2 sh4 4x16 — one mounted on an airgun one still in the box
the mounted one I can read cans across my basement at 16x — 17 yards on my rangefinder
the one in the box is blurry at the same 17 yards, took it outside and it clears up at 20 yards -16x
keep in mind the ocular lens may not be setup right at the moment on the boxed scope
obviously, drop the power and things can get much closer
at the price right now I’m seriously considering another