Sesnor plane

Started May 9, 2012 | Discussions thread
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Doug Pardee
Doug Pardee Veteran Member • Posts: 8,392
Re: Macro distances and angles

alanr0 wrote:

Focus distance is conventionally measured between object and sensor plane.

May I add that there should be a mark on the camera body that shows where the focal plane (sensor) is. It looks like a circle with a straight line drawn through it Φ. The line is the reference point for focus distance.

Here's a DPR photo of the Canon 60D. The focal-plane reference is a white mark to the left of the LCD:

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