It was “pin sharp” at 60x under ideal conditions (bright day, short range in a garden) at 60x on a dull, misty drizzly day at 400m+ it was less so, but I could still get a hard focus on a moving avocet. Better than any scope I’ve ever had including cherished MM3 60ED at 45x.
Well, bad seeing or heat haze is not sth ED glass is known to work against... so the HD version will be affected in the same way.
Joachim, who has not yet found a scope he wants to upgrade to from his old but nice TSN-3...