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04-06-2012, 07:55 PM   #1
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Lens markings


I've just got my hands on a SMC Pentax-M 40-80mm F2.8-4 lens and was hoping someone could explain to me the various markings?

I understand the index markers above the aperture ring but not the others. The lens did not come with any guide/instructions so I wasn't sure.

This may be simple for some but it's new to me.

Thanks in advance.


04-06-2012, 08:15 PM   #2
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