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Re: [OM] changes in optical formula

Subject: Re: [OM] changes in optical formula
From: Winsor Crosby <wincros@xxxxxxx>
Date: Tue, 29 Sep 1998 21:31:42 -0700
>Hi Greg:
>
>> You can't change the coatings (in the case of MC) w/o redesigning the
>>  lens? Different glass types I understand, but I didn't think redesign
>>  was necessary in coating changes.
>
>The multicoatings are formulated so that they match the coatings of the other
>elements.  It is an optical design and manufacturing balancing act and no
>small feat.  Hence, you can't replace an element in a single coated Zuiko with
>a multicoated one.  It has to be another single coated element.
>
>Perhaps John H. might comment on how hard it is to get replacement elements
>for single coated Zuikos.
>
>Gary Reese
>Las Vegas, NV
>
That would not be true if the coatings are purely to reduce reflections. I
suppose that some of the coatings could have some color rendition balancing
properties.

Winsor

Winsor Crosby
Long Beach, California
mailto:wincros@xxxxxxxxxxx





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