Parfocality - definition of parfocality by The Free Dictionary
(General Physics) optics the quality of being parfocal
References in periodicals archive
allows for sustained focus across the entire magnification spectrum from 35x to 500x.
adjustment was through a Keplerian beam expander.
So if parfocality
is a concern, you are probably better off buying one set rather than mixing brands.
Current microscopes can store the z-focus position with full consideration of the parfocality
Among these properties are parfocality
, which eliminates the constant need to refocus when changing magnification; and plan objectives, which correct the image for field flatness and produce an image that is as sharp on the edges as it is m the middle.