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Old 26-02-2010, 08:24 PM
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DavidTrap (David)
Really just a beginner

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Join Date: Jun 2009
Location: Brisbane
Posts: 3,045
If you look at the top of your camera there is a small circle with a line across it. This is location of the focal plane. You will be surprised just how far back in the camera it is - but if you measure from the front of the lens mount to where that focal plane marker is it will be 44mm. (I know these marks exist on Nikon cameras - they are 46.5mm back I think)

Cheers
David T
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