Full compatibility Four eyepieces with different magnification are available for the 77 and 62 spotting scope. Each eyepiece is fully compatible between both scopes as the bayonet is the same for both spotting scopes. The 20% shorter focal length of the 62 spotting scope compared to the Televid 77 also reduces the magnification of the same eyepiece on the Televid 62 by 20% (e.g., from a 20x WW on the Televid 77, an eyepiece will become a 16x magnification eyepiece on a 62 spotting scope). On both devices, the ideal relationship between magnification and light intensity is retained. For precise identification, all eyepieces are given 2 engravings.