Re: Aperture markings on vintage lens question

[Lea Murphy <lea@xxxxxxxxxxxxx>]

Guessing…could they be related to EV numbers? Or something to do with Cine?

Lea

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On Oct 9, 2015, at 9:27 AM, Jan Faul <jan@xxxxxxxxxxx> wrote:

They’re f-stops. Not all manufacturers agreed to our usual numbering system today. I have a Leitz lens which begins with f2.2 and goes up to f19 

On Oct 9, 2015, at 10:10 AM, Andrew Davidhazy <andpph@xxxxxxx> wrote:

Somebody asked me what the markings on this lens meant - suggestions? 

Presumably they are f stops or light volume designations but the numbering system

is non-conventional at least to me. They double in value from step to step as one 

would expect f numbers to allow double the amount of light to pass but I don’t 

remember having seen this particular sequence. 

<2015-gunther-lens-1.jpg>

Andy

Art Faul

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