I just came back from a shoot where I did just that - insist on 2k 4444 compression. We were meant to shoot 3k raw but since production failed to secure a T-Link, 2k prores 4444 was the next best thing I could ask for. I told them 422 would be unacceptable for vfx, especially for keying.

>>I always ask the vfx house why and they shrug their shoulders
The only "problem" on set is simply the increased data rate, hence the need to swap ou the card a little more more often and require more disc space (and a little bit of more time) for the data wrangler to manage backups etc.
I can see this as an argument for drama only shots when you try to decide between 2k and 4k raw, but in I would never take this as an excuse to shoot 422 footage for vfx use. I'd rather not take the job.

The more severe reason for this is usually simply lack of knowledge on the production side and lack of communication up front to establish the required camera settings before it's too late. It's a good idea to have the camera's spec sheet handy and refer to that before the shoot to avoid any misconceptions.


Sorry if this sounds a bit smart-arsy, but since I just had that very scenario last week I thought I'd chime in.


Cheers,
frank





On 3/30/14, 1:23 PM, Deke Kincaid wrote:
The lowend Alexa shoots 12 bit Prores 444 on the SxS cards in LogC.  Though for whatever reason tv shows always seem to shoot it in 422 mode.  I'm not sure if it's out of habit or they are trying to get more time on each SxS card?  I always ask the vfx house why and they shrug their shoulders and say they couldn't sway production to do it differently.  I would just try to push production to shot prores 444 instead of getting another device.

Inline image 1



--
Deke Kincaid
Creative Specialist
The Foundry
Skype: dekekincaid
Tel: (310) 399 4555 - Mobile: (310) 883 4313


On Sat, Mar 29, 2014 at 4:10 PM, J Bills <jbillsn...@flickfx.com> wrote:
Hey y'all - might be a little behind the curve here but doing a batch of greenscreen shots shot on Alexa and it's pretty ratty.  this is 4:2:2, but just doing a couple of google searches shows that there's a not terribly expensive (relatively) "Gemini" recorder that can get 4:4:4 off of it, so it seems like I might need to forward a couple of links and make some "suggestions" for next time.  ;)

Just curious since I've not looked into it for a while - is there a new killer setup that can get nice clean 4:4:4 GS HD footage on a reasonable budget?  bonus points for 10 bit, log, dng, etc.

You hear blips about the Blackmagic cams or Magic Lantern setups or whatever but I'm just curious if anyone has been keying any of this stuff and been impressed with anything, or done some testing?

Anything reasonably portable out there you've come across or do you still need to tether to a RAID and capture through HDMI?

NAB is just around the corner!

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