Hi Tim,
You will find that the wides on the IQ100 still need the LCC, I am in full agreement with previous posts. The CMOS when shifted will still have color cast just like the CCD does as the wide lenses are so close to the sensor. The Rodie 40 is a great lens on the IQ100 but even at 5mm of shift will show some color cast, and of course past 5mm, you will start to see light fall off. The other issue is the CMOS backs have a similar issue to microlens ripple. However unlike microlens ripple, the banding is much more irregular and a bit more faint. However on a solid back ground it will show up on shifts. The latest LCC from P1 will get the vast majority of it. I will add, there has been a lot of negative press on the IQ100 and 50MP backs mainly in the area of color cast, in that it's vastly worse than the CCD backs. I agree that with a massive shift say 15mm to 18mm you will start to see quite a bit of color cast, Magenta, and most times it's worse than a CCD back shifted to the same amount, however C1 will correct it amazingly well. It pulls back true color and saturation which when you view the image on the back's LCD, you will think is not possible. Yes there are crosstalk issues, however in my photography I never see them.
XF IQ100 is a match made in heaven, and I do so wish it had been here 5 years sooner. The XF is vast improvement over the DF of Df+, however it's still having issues, as the 90 prism latch is both easy to hit and in some cameras loose so there is slight movement. Also the battery door on many of the XF's shipped last year turned out to be defective. My XF has both issues, I waited months for P1 to come out with the latch fix which is now supposedly shipping on new bodies, but gave up waiting (4 months?) and went ahead for the battery door fix as it was starting to create a real problem for me.
The main features I really like on the XF IQ100 combo are:
ES, a real plus with this back as I never found the seismic delay that effect for longer glass.
On a tech camera you can shoot longer exposures without having a Dark frame as long as you don't change shutter speeds, can't do this
on the XF for some strange reason unless you use the intervalometer setting.
True Live View which really make a difference for fine focus tuning
Focus bracketing, which works great as long as your subject is not moving due to wind
Power share between back and XF (IQ3 only) this saved me in my last 3 shots as my battery door totally failed on my XF and I was able
to limp along with the back battery powering both camera and back. Normally when the XF battery door works, you gain quite a bit
of life since the XF has a much lower battery consumption than the back and many times I can go all day or 3/4 of day on just 3
batteries.
Waist level finder option is great if you are used to that. I found it just too hard to adjust to everything being reversed when trying to to panos. But the size and weight difference is impressive.
I like the feel of the XF, a bit harder on the edges than the DF series of cameras but still works well in the hand.
ES is unique to P1's implementation of the 100MP (so far)
Downsides:
Massive weight of everything. Would not bother me if I was still 45, but those days are gone. I pretty much have to use a tripod all the time with the XF/100 combo. I can use the 55LS and 80LS hand held at times but 75mm and out I just need a tripod and ES to get the best results. ES needs a tripod all the time. The two main zooms, 80-40 and 75-150 are both massive in size and heavy but optically excellent.
One focus point, as always, still would like to see at least 10 like DSLR's but from talking to my dealer it seems this will not happen. I had hoped that with all the P1 hype around the new AF system, something else was coming but I guess not.
Still quite a bit of mirror slap just like the DF, in fact I would be surprised if the shutter/mirror are not just moved straight from the DF+. The ES option does fix this problem however.
Lastly, if you have shot the X1D and held it it's going to be a bit of shock when comparing the two. The X1D is truly a beautiful design and if Hasselblad had just added a few more design features it would have been harder to hold off from purchase.
Paul Caldwell