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Message: <blockquote data-quote="Gijs van Ginkel" data-source="post: 3940470" data-attributes="member: 82596">Rico70, posts 13 and 20,I tried to answer questions in post 13 already, but perhaps it is not clear:That Leica improved the coatings can mean different things:-1- the composition of the coating layers on the different glass surfaces is changed, since that can influenece the efficiency of the anti-reflective properties of the coatings and/or-2- the number of coating layers on the optical surfaces changed/was enhanced to decrease light losses due to reflections further.-3- after 1988 phase correction coatings can be applied on a the surface of a roof prism (was not used on the original 7x35B Trinovids)-4- water repellent coatings can be applied on the outer surfaces of objective and eyepiece lenses, but they are not supposed to alter the optical properties of the binoculars. These coatings were not applied on the original 7x35B Trinovids.I hope that this is clear.Gijs van Ginkel</blockquote>