Snap-to focusing can also be seen with binoculars, in fact because both eyes are in use its more apparent. When trying out binos & scopes, its one green flag feature, the others being detail sharpness and colour rendition - wide angle are often inferior to standard.
Snap-to used for shorter FL scopes really means less depth of field & more critical focusing required. I prefer longer, but not too long. If trying out a short FL refractor, its worth using a good Barlow with the same eyepieces to see any differences at higher magnifications. How clear & well defined are small details. The best are like long distance macro images.
Edited by 25585, 01 December 2019 - 06:34 PM.