The letter of the alphabet is the number of elements. E = 5 elements.
John
Camtech
Alain Duquet wrote:
> What is the signification of the inscription E ZUIKO on the 300mm 4.5?
> Is an indication about the year of fabrication and, first consideration
> for me,
> about single or multicoating?
> Colors reflections seems most simple compared with the 180mm.
> Is it the effect of the construction of the two lens (more or least
> curved)?
>
> Alain
>
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