A point I found useful is - using a platform tripod head, if the cam lens is pointed 90 degrees to the direction of the platform shaft direction, you have a 180 degree - OPEN ENDED ROTATION SCENE CORRECTION - from 9 o’clock through 12 o’clock and around to 3 o’clock ( like on a clock face). This is OPEN ENDED CORRECTION – used in conjunction with the small carpenter’s level – offers high accuracy of straight lines and other parts of the scene.
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Norm Dunne
I love the Old Masters for incentive and compositional ideas.
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