SP4 looks like a more mature device now----and an optional 16GB RAM! I was hoping for two USB3 ports but wasn't holding my breath. Surface Book sounds good, but not a good portable solution for tethering without USB3 on the tablet side of things---so back to looking at the SP4 for me. I'm still wary of the heat issues brought up by Paul---so Core i5 may be the better choice for me with lots of RAM.
To save you some google searching, there are two articles on my website blog. Other than being a more mature device, I don't think the introduction of the SP4 would cause any material or substantive changes to the accuracy of the article with regard to tethering to a USB3 enabled MFDB and C1 Pro 8. The second article covers clamping options, with my favorite using rare earth magnets. Shopping lists and links included.
1. https://kendoophotography.wordpress.com/2014/02/18/microsofts-surface-pro-2-a-game-changer-for-phase-one-iq-series-and-leaf-credo-medium-format-digital-backs/
2. https://kendoophotography.wordpress.com/2015/05/29/tethering-with-the-surface-pro-evolving-clamp-choices/
Ken
I just wanted to add, that if you are looking at tethering solution for the field this information is invaluable. In studio, the MacBook Pro or other solution can work fine, but in the field, what Ken (and Don Libby) discovered with the Surface pro creates by far the best tethering solution.
If you are working with a tech camera/CCD the live view on the CCD backs, just can't get the job done. Due to both heat issues (back overheating) and battery life (battery draining). Not to mention the fact that you really can't judge too much on the CCD live view as the image just can't be easily viewed due to blooming and noise, even with a ND filter on the camera.
The Phase Capture Pilot solution is a not a good solution, at least for viewing the files after capture. The images on the iPad can not been viewed at 100% (which is critical for focus checking) and the lag time to move the files can be terrible and or just trying to make the ad hoc wifi connection. The wifi connection also has a very negative effect on the battery life of the back. But most important to me is that when viewing the files at 100%, you can't really judge critical focus it's just not sharp enough. This has been the case since day 1 with the IQ260 and Capture Pilot and Phase One HAS NEVER ADDRESSED IT. I still can't believe it is something that can't be fixed but so far the view is still fuzzy on the iPad at 100%, not to mention the time it take to load a near full 32GB card to preview. Capture Pilot with a CMOS back does offer some great abilities but viewing after capture to me is not one of them.
If you are using a tech camera in the field, then Ken's solution is so good, that Phase One should be selling a "tech camera" kit, with the S3 or 2 included. It's just that good. If you are hung up on win vs Mac, then it's good time to get over that, as I don't see Mac ever coming out with a similar product. They just had their September announcements and once again they bypassed the Macbook Air with a removable keyboard. I don't see that coming anytime soon. The iPad is not going to work unless they create a iPad that runs iOS, and I don't see that coming as Mac will feel that it will compete to much with their Macbook lineup.
Even if you are using a DF+ (actually it' a great reason) or XF, being able to tether and see the final image on C1 and viewed at 100% is invaluable and I will continue to tether even with a XF.
So Kudo's to Ken and thanks again for him for taking the time to write up in such good detail his solutions.
Paul