Neuro, interested to hear why you're looking at the TS-E 17mm. I've been researching the differences between the two lenses lately and in some other threads it sounded like you were pretty happy with the TS-E 24mm.
I'm very happy with my TS-E 24mm...except when I need a wider focal length. I would be using them both, depending on the focal length needed.
Other than focal length, the 24 is slightly sharper (the 17 is among the very sharpest ultrawide lenses, though). The 24 can tilt a little more than the 17. One of the biggest differences is the 24 can take front filters and the 17 cannot. Since my main TS use is architecture, I rely on a 10-stop ND to 'blur out' people from the scene, so that's one factor that kept me from getting the 17. Now, there's the Wonderpana system as a 10-stop solution for the 17...not cheap, but I need that option.
One other thing to keep in mind is that the TS-E lenses take the Canon extenders, the 1.4xIII behind the 17 gets you to 24mm with very good IQ.
Interesting, I had not heard of the Wonderpana system before. With that being said (and apologies for hijacking this thread - happy to move to a new thread if need be), I've already bought into the Lee system (foundation kit, .9 soft/hard and Big Stopper) that I have been using with the 16-35 2.8. I've wanted to do more architectural with landscapes as a secondary use so was planning on selling the 16-35. It looks like Lee has an adaptor for the 17 but hadn't yet found any threads testing the 100mm filters with it. Most of my landscapes have been at 16mm so far but if 24 gets the job done for architecture I'd be willing to compromise on that.
Based on that setup and with the option of only choosing one of the TS-E lenses, would you recommend the 17 or the 24?
Thanks as always for the insights, they're much appreciated.
I have the Lee setup as well. The Lee TS-E 17mm adapter for 100mm filters restricts the movements to a bit over 6° shift before you get mechanical vignetting (both lenses shift 12°). Not sure how it would be on the 17, but with my 24 I often need 8-10° of shift for tall buildings, sometimes the max shift. The Wonderpana uses 145mm filters, and doesn't restrict movements.
As for focal length, I'd say you're best able to answer that. Set your 16-35 to ~17 and ~24mm, and see which framing would work better for your needs. From a conservative standpoint, if the 17 is too wide you can add a TC or crop, but if the 24 is too narrow..... (Yes, you can do a shift pano, but not if you need shift to correct verticals).
FYI, Lee makes an adapter for the 17mm TS-E (which restricts some of the movements, of course, by vignetting).
However, if you use the 17mm with the 1.4x III, it might or might not restrict the movement as much.
I am unsure on the theory here, whether the 1.4x TC causes a lens to NOT use the periphery- if that is the case, there will be less vignetting.
The best way to find out is by trying- but unfortunately, although I have both the 17mm and 1.4x III, I couldn't find the $ 90 Lee adapter in a local store to try before buying.