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Message: <blockquote data-quote="BruceH" data-source="post: 3223677" data-attributes="member: 106398">I agree that the manufacturer websites can be confusing.  That is why I advocated above that the manufacturers should be more explicit in what they say. Swarovski says the SLC has "top-quality, high-luminosity HD optics" when they mean ED glass.  Worse is factual data that is incorrect.  Sightron has listed incorrect  FOV and weights for years and as I recall Leupold has had their share of website discrepancies.My understanding on the history of coatings is that years ago, the glass was uncoated.  Then some models had a single layer of coating.  Development progressed to multilayer coatings on some of the lenses for even better transmissions.  Now almost all quality binoculars have multilayer coatings on all glass to air surfaces (FMC).  It is expected from quality binoculars.  It may be that some manufacturers no longer think it is necessary to state such detail and are phasing out the terminology.  Maybe the high end manufacturers think it no longer necessary to make such explicit statements because it is now standard for them.  Swaro says the SLC has "Swarobright" (Coating for maximum color fidelity across the whole light spectrum) and "are real multipurpose binoculars that have had their optics and coating system optimized specifically for contrast and focus".  Specific details like FMC or phase coating or dielectric coating are not obvious.  Same is true for thse SF.  As you stated, there is no standard for some of the marketing terminology.  A good example is the use of the HD term.  Looks like MC is also defined by each manufacturer.  Even some of the most basic specs can be hard to compare.  Is the weight with or without the strap?  Is the length with the eye cups extended or collapsed? And more .....Bob .... Actually, I did not ask where you got your information and I never thought you were trying to be snarky.  That is not who you are.  You wrote the explicit statement that "The TerraED has ED glass but is not FMC".  The FMC part did not sound right to me (thus the B & H and Eagle Optics references).  What I did ask:  "Bob, have you come across anything that says it is not fully multicoated?"  I wanted to know if you had explicitly heard or read that the Terra was not FMC.  There was no need for me to ask about the source of MC because I had already seen it displayed on the Zeiss web site.  Sorry for the confusion.I do not know what Zeiss wants to post.  Maybe they will see this discussion and decide more explanation is desired.  If so, then the place to put it is on their web page.  I assumed the Terra was fully multicoated, but since there was a statement in this thread explicitly saying it was not, I was curious to find out for myself and contacted the manufacturer.  I do understand the confusion as I was not sure.   I got an answer to my satisfaction and shared it with the community.  I personally have no need to find out more.  It is now clear to me what is meant by Zeiss MC coating (as stated in post 38).</blockquote>

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