Paul Spinnler
Well-known member
Interestingly enough, the WRX-138 is not an official XT system lens, but only a XT compatible variant – it is just sold via Cambo. Initially P1 wanted it to release a wireless XT version, but since they couldn't make the internal wiring work with the floating lens system and housing assembly it was taken out of the P1 roadmap and is now solely a Cambo "WRX" lens which happens to fit the XT because they have the same mount. A fully integrated 138 would have been fantastic, ie without cabling, but given the very low sales numbers any further R&D to make it fully integrated probably didn't make sense.
Also, because of the XT system's design, meaning non-removable electronic backside back adapter, the setups become quite unbalanced without spacer optionality in the back. That's where Alpa's short barrel approach is kind of genius as it effectively increases the shift ways of all SB lenses by allowing for a extender to be mounted at the back. In return, this makes it unlikely that we see an integrated X system back adapter for other systems than P1's XT lineup.
Meaning because it has a cable it is not officially an XT line lens. This is different from the initial plan of P1 to also sell it before the re-engineering MK II exercise to accept an X shutter. They even listed a longer lens on the XT site for a long time.
Now the XT linup stops at 90mm and P1 doesnt sell the 138.
I think this means it also doesnt record shift, in my understanding, which is not a real problem here, but still to be known.
Also, this variant here, is a bit of a shame with the long barrel; you cannot use the full image circle of this fantastic lens due to mechanical vignetting.
So to use it on an XT you need to essentially accept: smaller IC, cabling and no metadata recording.
If you are on Cambo better to get the short barrel variant which gives you the flexibility to use it more broadly on a 5000 series body, ie buying a LB version of this one is a bit of a waste of optical potential
The Alpa variant, courtesy of the Pano and XY, is the only system where the full potential can be exploited (well except on an AS bellows camera), ie 35mm+ ... which is insane.
Also, because of the XT system's design, meaning non-removable electronic backside back adapter, the setups become quite unbalanced without spacer optionality in the back. That's where Alpa's short barrel approach is kind of genius as it effectively increases the shift ways of all SB lenses by allowing for a extender to be mounted at the back. In return, this makes it unlikely that we see an integrated X system back adapter for other systems than P1's XT lineup.
Meaning because it has a cable it is not officially an XT line lens. This is different from the initial plan of P1 to also sell it before the re-engineering MK II exercise to accept an X shutter. They even listed a longer lens on the XT site for a long time.
Now the XT linup stops at 90mm and P1 doesnt sell the 138.
I think this means it also doesnt record shift, in my understanding, which is not a real problem here, but still to be known.
Also, this variant here, is a bit of a shame with the long barrel; you cannot use the full image circle of this fantastic lens due to mechanical vignetting.
So to use it on an XT you need to essentially accept: smaller IC, cabling and no metadata recording.
If you are on Cambo better to get the short barrel variant which gives you the flexibility to use it more broadly on a 5000 series body, ie buying a LB version of this one is a bit of a waste of optical potential
The Alpa variant, courtesy of the Pano and XY, is the only system where the full potential can be exploited (well except on an AS bellows camera), ie 35mm+ ... which is insane.
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