question about an Olympus 35SP I picked up

Discussion in 'Rangefinder Forum' started by David Lyga, Oct 4, 2011.

  1. David Lyga

    David Lyga Subscriber

    Messages:
    1,942
    Joined:
    Nov 25, 2007
    Location:
    Philadelphia
    Shooter:
    35mm
    This question concerns the 'spot' button on the back. Assuming there is a difference in tone on the scene in the central area of the rangefinder, is the needle on the EV scale supposed to move when the button is pressed (ie, going from 'average' to 'spot')?

    On mine it does NOT, even when on autoexposure. Metering is fine, albeit 'average' only. Am I doing something wrong? And if it is supposed to move (most rational) is the top easy to remove by unscrewing the film advance lever and film rewind knob so that I can check the internal connection? There are no other apparent screws on the top (I am used to removing tops from cameras). Thank you. - David Lyga
     
  2. Xmas

    Xmas Member

    Messages:
    6,455
    Joined:
    Sep 4, 2006
    Location:
    UK
    Shooter:
    35mm RF
  3. David Lyga

    David Lyga Subscriber

    Messages:
    1,942
    Joined:
    Nov 25, 2007
    Location:
    Philadelphia
    Shooter:
    35mm
    I just bought it at a flea market. I have not run film though it yet. But it seems that the indicator needle would move (upon pressing the 'spot' button) BEFORE the shutter was pressed, in order to prepare for the new EV in advance. Is the 'exposure change' made WITHOUT the needle indicating anything has been changed?

    I am thinking here of similar situaions like the Canon AE-1 where pressing the 'backlight' button on the side of the lens mount area indicates 1.5 more stops exposure will be given. - David Lyga
     
  4. John Koehrer

    John Koehrer Subscriber

    Messages:
    6,463
    Joined:
    Apr 3, 2004
    Location:
    Montgomery,
    Shooter:
    Multi Format
    Could be a dirty/tarnished switch. It's just a push button.
    The top should be pretty simple to remove, but once you get the lever & rewind knob off there may be a concealed screw or spanner nut there.
     
  5. sangetsu

    sangetsu Member

    Messages:
    214
    Joined:
    Apr 28, 2009
    Location:
    東京
    Shooter:
    4x5 Format
    There should be a difference in readings if the center of your subject is brighter or darker than areas along the edge of the frame.

    The meter cell is made of two parts, the outer part reads at most times, pressing the switch energizes the center part of the cell. The switch is a simple leaf type, and may not be getting contact, or the wire leading to the meter may be grounded out. This sometimes happens when the top cover is removed and replaced.