Some people use a T/S for gaining resolution by taking pictures at the extremes and stitching in post. This at least has the advantage that your alignment never changes.
On Mon, Dec 2, 2013 at 11:10 AM, Bill <[email protected]> wrote: > On 02/12/2013 9:41 AM, Darren Addy wrote: >> >> Correct me if I'm wrong, but doesn't perspective distortion in >> software comes at a price? Don't you end up with a trapezoidal image >> shape than then must be cropped to rectangular? > > > Your not wrong, but your point is rather picayune > As long as you have enough resolution at the end, it's a non starter. > Also, with the newer Pentax models, you have the option of using composition > adjust, which does much the same thing as lens shift. I'm not sure if the > shift on the lens will move the image farther than using sensor adjust in > the body though. > > >> >> Another possible problem comes with the DOF and orientation of the >> image plane. With a T/S you have more control over the actual plane of >> focus. You can place the plane of focus on the front of the building, >> and use the shift to get the entire building into the frame without >> disturbing that. With the photoshop solution, you need to use DoF to >> cover the entire building (the plane of focus is NOT vertical, it will >> be parallel to the film plane, which is tilted). Software solutions >> almost require you to use hyperfocal distance on your lens. > > > A TS lens leaves out half of the equation, that being orientation of the > sensor/film plane. When I was shooting 4x5, I found that any tilt of the > lens almost always required a tilt of the film plane as well. Because this > can't be done on a fixed frame camera, the amount of tilt available will be > quite limited, or else the photographer is going to end up stopping down > quite a bit anyway. > > TS lenses definitely have their place in limited applications, but in > applications where they are wanted, they are almost always insufficient, and > the user ends up doing some distortion correction in post, or stopping down > farther than is desirable, etc. > For a thousand dollars, a photographer who is going to make a lot of use of > this sort of lens would be better off buying a used monorail camera. > > > bill > > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
