If true, I suspect this is a matter of lens design, and not
multicoating. As I pointed out in another post, when I compared single-coated and multicoated versions of
the
same Nikkors, only the colors of the ghosts changed, not
the quantity. I suspect that multicoating is useful in
many-element lenses for improving lens brilliance a bit,
but I'm not convinced it does much else...

On Sat, 17 Aug 2002 08:51:37 GMT, "Alan Chan" wrote:

>There is quite a different between lens and filter. For a simple lens, say 5
>elements. There are 10 glass surfaces. The flare and light loss could be
>significant enough to apply some sort of multicoating. We usually use 1
>filter on our lens and there are 2 surfaces only.
>
>However, I believe Canon was trying to misguide people to believe that
>multicoating were no better than single coating in flare control, so that
>they could save their resource on developing a better coating. Have you ever
>try Pentax SMC lenses which are much more flare resistance? Not that they
>are better, but they are much more flare resistance.

>"Robert Monaghan" wrote in message
>news:ajjk5c$8oa$1@post.cis.smu.edu...
>> quote:
>> Canon should also be lauded for its attitude towards multicoating. They
>> have publicly acknowledged that the only really useful reason for
>> multi-layer coatings is to increase light transmission. They have,
>> therefore, ignored any possible gains in terms of flare and ghost
>> elimination (which, as we've shown, isn't really such a valid function of
>> multicoatings in most cases)...
>>
>> Using a very precise laboratory analyzer.. we could detect virtually no
>> measurable difference in background flare between the single-coated and
>> the multicoated lenses. And in our portraits, which were shot against the
>> same backlit screen used by our analyzer, we could detect no difference in
>> flare within transparencies produced by single- and multicoated leness
>> (see photographs, page 93)!...
>>
>> end-quote Multi-Coating, Asset or Gimmick, Bennett Sherman and Hiroshi
>> Kimata, Modern Photography, June 1975...
>>
>> see http://medfmt.8k.com/mf/coatings.html
>>
>> basically, if multicoating has so little impact in a multi-element lens,
>> its benefits on a flat glass filter is likely to be even much less...