| Joined: | Thu Apr 5th, 2012 |
| Location: | Goose Creek, South Carolina USA |
| Posts: | 418 |
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Squarerigger wrote:
Very interesting JK. I can't seem to get my mind wrapped around the concept of this PC lens. Never seen one or it's product that I know of.
The camera lens is like a video projector, projecting an image onto the sensor
Imagine photographing a flat square building - if you tilt the camera and sensor away from the perpendicular (ie the sensor is not parallel to the subject) the image of the building will be distorted
If you keep the sensor and the building parallel the building will be square, but will not fit in the frame (from ground level)
If you slide (shift) the lens around then you are able to slide around the image formed within the camera to bring the object fully back into view while the sensor and building remain parallel maintaining correct perspective
As for seeing the output of this type of optical trick, you have definitely seen it in everything from architecture right down to studio shots of good quality perfumes and kitchen wares
Thanks Doug, after reading Robert's link, I am sure you are correct that I have seen many uses of this lens but was unaware of the technology in use.
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Gary