Ok, that makes sense. We tend to use high NA objectives for our applications, and the light path is a bit longer than in standard scopes (though not too long as

Ok, that makes sense. We tend to use high NA objectives for our applications, and the light path is a bit longer than in standard scopes (though not too long as to introduce too much empty magnification.) shows how much I still have to learn about optical systems even though I've been writing control sofwtware for these things for almost five years now.