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Mike Ganz wrote:
Really like your Golden Gate Bridge shot. Considering how far above the focus plane the bridge is, I'm curious as to how you managed to keep the bridge in focus after tilting your lens. How high above the ground was your camera/lens? And at what aperture was the image taken? Thanks in advance if you don't mind providing a few details about the shot.
Mike, The camera is quite low, with the bottom of the camera perhaps 3-4" above the water.
Here the ballhead is horizontal and the ballhead clamp is grasping the L bracket from the side of the camera body.
Using a lot of downwards tilt, everything in the horizontal focus plane should now be in focus. It works well that there is not a lot of vertical relief in objects in the near field. For example if there were one much taller rock in the foreground, the top of it might easily be out of focus. The tilted focus plane is a wedge of in-focus volume. As the subject get further away, this wedge increases in height (or depth) which also depends upon your aperture. In this case 5DII, TSE II with 1/125 f8 ISO 640. Imagine taking the focal plane dof with a normal WA lens and in the TSE lens rotating it forward about 70 degrees. What used to be front to back dof is now horizontal dof, rather thin close to the camera but with much more depth at a distance.
To keep the towers straight and the waterline from curving requires some upwards shift.
Edited on Feb 14, 2012 at 02:11 AM · View previous versions