My knees are still making strange clicking sounds from Monday's adventure in the Smokies with a full pack and a 4-lens kit, so naturally I'm sitting here thinking about adding (not subtracting) a big chunk of glass from my bag...
![Lol](https://www.pentaxforums.com/forums/images/smilies/lol.png)
Specifically, I'm curious if any of y'all are running the 67 75/4.5 Shift--I sized up several scenes that could do with a bit of "straightening," but mostly I'm interested in "shift pano" possibilities and wanted to see if I understand the basics:
1.) I'd get 20mm of shift left and right, but with a seven centimeter wide "sensor"
![Stick Out Tongue](https://www.pentaxforums.com/forums/images/smilies/tongue.png)
, that would make for a two-shot pano, i..e. the equivalent of a 6x11 once I merged the frames in Photoshop?
2.) I believe that shifted shots call for an extra stop of light when you meter--but is there always a noticeable fall-off in exposure at the edge of the frame, like a partial vignette, that would make "indexing" two shots difficult?
3. ) And, finally, I'm assuming you can handle any parallax issues by moving the camera left or right in the clamp the opposite direction of the lens shift?
Any thoughts (or interventions
![Lol](https://www.pentaxforums.com/forums/images/smilies/lol.png)
) appreciated...