What does “C” or “K” or “WF” or “H” mean when printed on the eyepieces?
Microscope objectives do not include correction for lateral chromatic aberration and require a compensating eyepiece (labeled “C” or “K”) to provide correction. “WF” signifies “widefield,” meaning you can see more of the specimen at a given time. “H” signifies “high eyepoint,” which means you don’t have to put your eyes so close to the eyepiece during observation. These are typically meant for users who wear eyeglasses but anyone can use them.
