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Graflex Optar 135mm ring

 
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thomasvetraz



Joined: 31 Mar 2024
Posts: 1
Location: France
PostPosted: Sun Mar 31, 2024 9:25 pm    Post subject: Graflex Optar 135mm ring Reply with quote
Hi
I am new to large format photography
I wonder what is the use of the ring with the letters OFF, FX, M ,M on this lens ?
Sorry if the questions have been already asked
Thomas[/img]
_________________
I live in France I am interested in all types of photography
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Dan Fromm



Joined: 14 May 2001
Posts: 2120
Location: New Jersey
PostPosted: Mon Apr 01, 2024 1:58 pm    Post subject: Reply with quote
Flash sync.

Off = no sync.

See http://camera-wiki.org/wiki/Flash_synchronisation
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