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| p.1 #2 · TS-E Shooters - How important is dual-movement? |
Yes. The TS-E 17/4L and TS-E 24/3.5L II have independent axes for tilt and shift. The TS-E 24/3.5L, 45/2.8, and 90/2.8 do not. The three older ones can be adjusted so that shift is either side to side, or up and down (with tilt nose down, for example), but it requires some bench time.
I can give you a couple of simple examples of why it's nice to be able to adjust the relative directions of tilt and shift axes.
1. Consider a typical landscape panorama where you use nose-down tilt to get near and far fields in focus, and then use side-to-side shift to make the photos that will be combined into the pano (shift left, shift centre (no shift), and shift right). In this case, the tilt and shift motions are on the same horizontal axis.
2. Of course, it can be as complex as the subject you're shooting. Say you want to take a photo of a picket fence that goes from near field right to far field left. Also, you want a relatively low vantage point, but you don't want to get down on your knees in the gravel. Use sideways tilt to align the plane of focus with the plane of the picket fence, and then use down shift to make it look like you're shooting from a relatively low position, rather than from the top of your tripod. Oops, this is the same combination of movements as the first example, except rotated 90 degrees. Anyway, you get the idea.
TS info links, http://www.fredmiranda.com/forum/topic/1109125/0#10588672
P.S. you can pick up an excellent used 5DII for a song, these days.