Yup another Leica newbie question

Discussion in 'LTM Camera Forum' started by Robin, Nov 21, 2015.

  1. Robin

    Robin Leica Place Regular Subscribing Member

    Jun 8, 2015
    Under the film dial there's a horned dial that rotates revealing numbers 0-20. First what is it and should it be left alone , kept on 0, or doesn't it matter. Looked on a download book on Leica if iif iiif ---not clear, nice picks
  2. Brian

    Brian Super Moderator Subscribing Member

    Apr 3, 2013
    This is for flash Sync, used with various types of Bulb flash. It sets a delay for the bulb to be at maximum. For X-Sync, set to 0.