Speaking of time-lapse, the new Alpha 7 and Alpha 7r both use a very small,low-capacity,low-endurance battery that gives fewer than 300 shots per charge...not my idea of a good time lapse body.
The new Alpha 7 and 7r also have a REALLY LOUD shutter, as in
reallllly loud. Obnoxiously loud. Would that be an issue? And what about the 7 and 7r's odd arrangement of base ISO set at 200, with a flash X-synch speed maximum of 1/160 second; wow...that sucks!!!!! If, and I stress "if" one's triggers can achieve the 1/160 theoretical X-synch maximum, these bodies are going to be royal pains in the azz for outdoor flash work of any and all kinds...both the ISO 200 baseline and the slow synch speed and total lack of electronic shutter means outdoor fill flash is gonna be shot at small apertures. Uggg.
As for Full Frame (FF) being more costly in the long run...I dunno...the new Zeiss-branded lenses like the $799 35mm f/2.8 (yes, a late 1960's economy-spec, f/2.8 35mm lens! WTF?) and the 55mm f/1.8 are pretty pricey for very modest primes. I'm not sure how many lenses, or what lenses YOU would need, so the cost picture is uncertain; we do not know for sure what Sony will price the remaining lenses at. Offsetting that is the adaptability, through adapters, of other lenses from other systems; you might be able to fill some niche gaps with off-list lenses that are available cheap, especially in normal and tele and macro lens categories, where telecentric light transmission would cause very few 'issues' with the new, very short flange to film distance that Sony has used in these new cameras. Like say, using Nikon's old 55mm f/3.5 Micro-Nikkor as a close-up lens...good macro lens, available used for $95.
I think it's a tough time right now to know exactly how the Alpha 7 system is going to eventually shape up and fill out. I watched The Camera Store's 15 minute first-look of both the 7 and 7r; they sell cameras, and they mentioned the battery and the obnoxiously loud shutter specifically. TCS videos usually gloss over weaknesses, but the battery and shutter issues were given prominent placement and "play" for a TCS video. Listen to the shutter in their video, which was shot outdoors in the woods; it is LOUD.
I thought the fact that the lower-cost, 24 MP camera having much better, and faster autofocusing was an odd decision, but as he said, that's the way Sony decided to go with these. Anyway, the A7 and A7r are sexy-looking cameras, and look like they would be fun to own. I myself like their design ethos more than I do the NEX series bodies. Check out Thom Hogan's NEW CHART on what Sony lenses fit/work with what at this URL
"NEX" is Gone, so What do we Call It? | Sans Mirror ? mirrorless, interchangeable lens cameras | Thom Hogan