[David Fortin] ” I purchased a Sony EX-1 when it first came out, and I’m still using it.
However, I can see me needing something that can shoot 4K.”
Me as well. I sold the EX1 and bought the X70 which does 422 10bit HD but 420 8bit 4K. Has the same S&Q as the EX1. The V90 coming out now would be good. I use Blackmagic Pocket with SpeedBooster for Interviews and controlled (none ENG/VNR) shoots. ProRes is very easy to handle (but really want a 4k equivalent now).
There’s is where the first key issue would be. I find that my Late 2013 6 Core Mac Pro struggles with the 4K XAVC-L (although noting preliminarily better performance with today’s FCPX 10.4.
BTW I also had the 2008 8 core Mac Pro. Had to upgrade the GPU for FCPX compatibility. I felt it was already sluggish by 2013, especially for encoding, and bought the new Mac Pro. Big downside was/is slower H.264 encoding compared to i7 (such as my late 2013 15″ MBPr).
[David Fortin] “#1 deliverable – online and digital files
#2 deliverable – DVDs (mostly for non-profit clients and fundraising)”
I dont’ do DVDs much anymore since it’s easy to deliver HD and even 4K files. But these is where H.264 encoding speed is important. I’ve done non profit and all day educational. After the shoot I may have to deliver 10-15 (one for each presenter). This may mean a batch optimized for YouTube, another for Vimeo, possibly a third for direct delivery. I’ll also do a VNR type package and maybe a longer highlights reel. These need to be turned around quickly (deliver within one day if possible). Getting a quad i7 is important for this. Clients may not be over my shoulder but they do need fast.
My guess is a 2017 27″ iMac with BTO Quad i7 would be good enough for you. The biggest downside coming from a tower is that there’s only two TB3 ports. At the very least you may need a JBOD (no internal disks) and/or RAID5 (for editing) and/or possibly a single SSD. This depends on your storage as well as editing demands. The iMac Pro might be overkill for you especially if you don’t need that kind of speed.
If you are thinking 5 years out though that can edge you towards the Pro though. I’m thinking of what it’ll take to handle HEVC 4K camera native, exporting to the same, having to add grades and other FX. This is why I think of camera source as well. If you don’t move up then this isn’t a worry though.