Hey Nicolas, What did you end up doing? I used the FS5 for the first time last weekend and I loved it. I will be reviewing it soon on my site (which is currently down and being updated). I own an A7S as a personal camera but want to move away from a DSLR/Mirroless format for my A Cam in a similar way like you where I would use it for clients as well. I've been thinking a C100MkII cause of the color (a C300Mkii if it was cheaper!) but the 4K option plus some of the newer tech is appealing.
Here is a short list of likes/dislikes:
Likes:
- Its a professional digital camera!
- Variable ND is killer - 4 fixed positions (1 clear) AND variable at each. So quick and easy to use. FS doesn't have this!
- 10bit @ 1080p - All those extra shades is a joy in post and pushing the grade further.
- Ergonomics - side grip handle, solid top handle with record button
- SD cards!
- Dual SD slots
- Proxy recording
- Looong battery life with large battery
- Addition of S-log 3 - easier to use then 2
- High frame rate for slow motion
- Decent amount of mounting points on the chassis
- Light weight and strips down small quick and easy. I can put together the body, lens, top handle, monitor, and side grip in 57 secs without trying too hard.
- 4K
- Versatile Can be used with my shoulder rig quite well or hand held. Switching is very quick.
- Upgrades coming from Sony like RAW to external.
Dislikes:
- The Sony color!! (this is a big one for me)
- Codec takes more computer performance in post
- White balance setting. Seemed to be only too settings. Indoor and outdoor and you can manually set each. Couldnt dial in a Kelvin setting like the A7s that I could find anyway.
- Fairly low internal bitrate of 50MB
- Slow motion is only bursts of 8 seconds then you wait for it to write to the card. Annoying but you just need to be set and ready or pick your shots with run and gun.
- Monitor is nice but just too small.
- EVF quality is too low and small
- No SLOG exposure help tools other then gamma assist and ONLY in EVF!!! ahahahah
- Bit noisy in low light but not too bad. Its not an A7s!
- 4K - should be a "Like" i know but its not because its only 3840×2160 not 4096 x 2160 like on the FS7.
I shot a quick little test one morning just for fun:
Shoulder rig photo attached.
It was a joy to shoot with for a full day run and gun. Its more or less going to be ordered soon.
I've heard people say its a small FS7. It isnt though. The FS7 really is a cinema camera compared to this.
Just my thoughts/experience and hope this helps. Will add anything else I forgot.