Voigtlander size designations

seany65

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Sep 6, 2016
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Hello all,

I was wondering if anyone has any clue about Voigtlander's size designations on their push-on lens hoods and filters?

It seems that "310/29" means the thing pushes onto a lens barrel/filter that is 29mm in diameter, and a "310/32" goes onto a 32mm diameter. Understandable so far, but I've seen lens hoods with "125/20" written on them and while most listings don't actually mention the size of diameter, one does mention 34mm. I've seen filters with "304/32", "303/32", "317/32" etc. So I'm confused.

Any help would be much appreciated.
 
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