FS-3 Grid Focusing Screen

Dust specks (red) and a possible misalignment (purple), not sure about the latter; maybe my expectation is higher than Olympus' specification of tolerance.


Using manual focus revealed that the dust specks are trapped between the prism of the viewfinder and the focusing screen: I focused on the focus point border, dust and gridlines are blurry adjusting focus in one direction then gave me focused dust specs and finally focused gridlines.


Update: The body is back from service and the FS-3 has been cleaned (spotless!) and is now aligned perfectly in relation to the focus point markers. I really like the subtle "being there when you need it" appearance of the lines.

  • Jimmy Rosaria 4y

    what is that for? beside vert/hori alignment...... is it brighter than the standard FS?
  • Cornelius Bartke PRO 4y

    The brightness of the viewfinder does not change and there is no matting on the screen. The full grid is 6x4, I was unable to capture 100% of the viewfinder image.

    The grid lines are indeed useful for alignment purposes — landscape/horizon, architecture but also for less obvious tasks like reproduction-photos of all things rectangular, postcards for example. Less trapezoidal out of camera equals less work later …
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Taken on January 31, 2009
  • 35.0 mm f/3.5
  • ƒ/11.0
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