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I've been reading and watching videos on tilt shift lenses and my goddess wife has ordered me a - Canon TS-E 45mm f/2.8 as an early pre-open and play with and place under the Christmas tree later gift.
One of the things that people keep saying about this particular lens is that they take it apart and rotate it so that the tilt and shift are on the same plane instead of 90 degrees to one another. Why? I don't understand why they do this.
If anyone has some before/after shots to help visualize I'd appreciate it.
John, Tilting the lens changes your depth of field iaw the scheimpflug principle.
There are times when you want more or less foreground/background before tilting for maximum depth of field. If you orient the shift in the same direction as the tilt instead of 90 degrees out, you have greater control over your landscape and architectural images.
If you are looking to join three images for a panorama, then leaving the shift and tilt 90 degrees out might be more useful to you. However, many landscapes don't require a tilt at all. In that case simply reorienting the lens so you can shift right and left while your camera is oriented in landscape proves quite effective.
There is a silver tab on the lens mount that allows you to turn the whole lens incrementally up to 90 degrees without changing the horizontal/vertical position of the camera. This is perfect for taking an vertical panorama of a tall building with the camera in portrait orientation and the shift also in portrait orientation. Use the tilt to control the buildings perspective as desired.
The new 17mm TS-E and the 24mm TS-E II also let you change the tilt/shift orientation without removing screws, adding more versatility in the field.