TTArtisans Announces the TS 17mm F4 ASPH

[Canon Rumors]

I remember when Canon released its TS-E 17mm F4L; that front optical assembly was something to behold, and it surprised the industry with a full-frame tilt-shift lens that no one really thought possible at the time. It took a few years for Canon to finally flex its optical muscle with wide-angle lenses and deliver excellent […]

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[keithcooper]

Just testing this on the GFX100S, where it has enough coverage, but unlike the RF/Z mount versions has no ability to change the shift axis direction.
So either a showstopper or irrelevant.
Limited to ±8mm of shift, but that is impressive on a [small] MF sensor
Still need to see how it compares with my 2009 TS-E17

Uploaded quite a few [full res] examples to the MF forum at DPR
This gives a good feel for the coverage [hand held 3200 ISO ~f/6.7]