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Where is the Wide Orthar aperture mark? | by Alex B/N
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Where is the Wide Orthar aperture mark?

First I thought the mark was the yellow metal point, pretty visible but I found out it only could go until f12...Well germans engineers so far never let me down, it was only me not finding the solution so I took a look of the 100mm aperture mark (red arrow) and then I found the Orthar aperture mark (blue arrow) in what I thought it was a bent/ding/dirty spot.

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Taken on January 3, 2019