I recently picked up some Canon FD glass (24/2, 50/1.4, 100/2) and an RJ Focal Reducer (effectively giving me 6 lenses) to use on my GH4 so that I had some fast manual lenses to achieve smooth, consistent focus pulls while shooting video (some m43 lenses work well, others don't). I'm quite happy with how the lenses perform, given what they are (20+ year old lenses). But as I started to use them, I began to wonder about adapting them on a FF camera. I don't need the video capability of the A7S/II (I own two GH4's), and don't want the resolution or cost of an A7R/II. But the standard A7 series looks interesting, the A7 II in particular. It has better ergonomics than the original A7, a few more customizable buttons, focus peaking & magnification, and IBIS. It really seems like a great camera to use with vintage lenses, and the Canon FD lenses appear to be solid performers. The primary reason I am looking to get an A7 is to get shoot landscapes. I've shot a number of land/cityscapes with my GH4, and while it performs well, I can definitely see its limitations (mainly with noise when pushing RAW files, although having more dynamic range never hurts). Referencing DXO (link), the A7 II has about a stop of more dynamic range (not certain why there's a difference between the A7 & A7 II since they're supposed to share the same sensor), but what's really nice about the A7 is the ~1.5 stop ISO performance, AND a native base ISO of 100 compared to the native base ISO of 200 in my GH4 (equivalent noise-wise to about ISO 600 on an A7 II based on the 1.5 stop delta in noise performance). Canon also has a great landscape lens for the FD mount, a 20-35mm f/3.5L. It weighs about 170g more than the Panasonic 7-14 f/4, but it can take filters (a big plus IMO since I like to do a lot of long-exposure shots). Comparing the A7 II + 20-35 L to the GH4 + 7-14/4, the FF combo comes out to about 150g more weight, but that's pretty insignificant to me when looking at the benefits of resolution, dynamic range, and noise. I should note that I have no intention of dumping my m43 gear, and I have no intention of buying native e-mount glass (the primes are quite expensive, plus I'll have manual focus primes anyways, and the zoom lenses are rather large). I would use the A7 system for manual focus legacy lenses exclusively. The A7 II is still priced too high for what I am looking to spend, but I don't really have a need for it right now either. I'd probably be looking to buy in the spring, so in about 5-6 months, which the prices should continue to fall like typical Sony cameras do. I plan on renting an A7 II over the holidays this year to see how I like it, but didn't know if any fellow m43 members have done something similar, and if so, how they like it?