- Posts: 18
- Joined: Wed Mar 30, 2016 12:57 am
Hey all.
Long time Blackmagic User (had a Cinema and Production cam) - who was one of the dreaded EARLY 4.6K owners with all kinds of issues (don't want to bring up a certain shade of red for starters).
I had a Helium for about 3 years - and grabbed a 6K pocket. I was so impressed with the results for quick set ups - that I have a major corporate gig Sunday - and we decided to go with the 12K due to the overcrank abilities (job has lots of firearms and is at a gun range). The last corporate 6K job I had to deal with horrible mixed lighting temps...shooting in hangers with overhead 2700 fluorescents while the hanger doors were open - sending shards of bright light in - and the camera performed like a champ considering.
Here's our issue.
I'm planning on using our Schneider Xenon Primes - and during EVERY camera test - exposure is WAAY off judging by false color and our waveform displays. Monitoring with the Extended Rec 709 on camera false color sent to external monitor.
Noise is off the charts - and the footage - when the same lut is applied in post - has a crazy crush to it.
Is there something we are missing in camera for these results?
We shot mainly in 8K full readout - as that's where we plan to be - lowest compression settings.
Everything we bring in is to the right for exposure - but can't be salvaged. We tried shooting in what usually is a dark room with horrid fluorescent overheads - and outside in and out of shade - with hard light banging the background to stress test (which I've used many times as it's in my office) - and also shot dusk the day before. We can't gauge anything.
This job will be mainly run and gun - almost all steadicam - daytime exteriors - and we're nervous. That's why we were trying to shoot stress tests; but - we can't seem to gauge it for normal shooting without tremendous noise.
The camera is a rental and we shoot early Sunday morning.
Things are clipped that were well below 90 percent on the zebras (according the camera's monitoring) .
Indoors we tried to expose to the left - only to find it totally covered in crazy digital noise (same as the outdoor stuff). If we go to right - the shirt has crazy noise and the skin clips fast.
There's so much crush with the extended video lut applied (which looks nothing like it from the camera out) - that I thought there was a hidden gain function or something crazy.
I created a Google Drive folder with a RAW clip - and 2 stills in log - with comparisons to the 6K run and gun shoot we did (which was in extended rec 709) - and the same lens on the RED (graded - which I shot with the same AC we did our setup tests on). All were monitored in false color and I had tremendously different results with the Ursa 12K.
What is super concerning to me - is how the low light shot - when in extended video - the wall in the back clearly reads 50 on the waveform - but is covered in noise as if we pushed it stops and stops.
I'm sure it's just something we are missing; but I'll be honest - totally nervous as we're just trying to find a safe exposure range to ride during the day - with decent dynamic range within a stop or 2.
Any help would be appreciated!
https://drive.google.com/drive/folders/ ... sp=sharing
I'd like to add - for the daytime shot - I graded the footage from LOG - to where it looked on our monitor and the camera on set - and uploaded that still - VS - the insanely contrasty "extended video" that looks crazy. The regular REC 709 looks almost like a sepia music video from the 90's. But heavy noise remains on the shirt.
- Mike
Long time Blackmagic User (had a Cinema and Production cam) - who was one of the dreaded EARLY 4.6K owners with all kinds of issues (don't want to bring up a certain shade of red for starters).
I had a Helium for about 3 years - and grabbed a 6K pocket. I was so impressed with the results for quick set ups - that I have a major corporate gig Sunday - and we decided to go with the 12K due to the overcrank abilities (job has lots of firearms and is at a gun range). The last corporate 6K job I had to deal with horrible mixed lighting temps...shooting in hangers with overhead 2700 fluorescents while the hanger doors were open - sending shards of bright light in - and the camera performed like a champ considering.
Here's our issue.
I'm planning on using our Schneider Xenon Primes - and during EVERY camera test - exposure is WAAY off judging by false color and our waveform displays. Monitoring with the Extended Rec 709 on camera false color sent to external monitor.
Noise is off the charts - and the footage - when the same lut is applied in post - has a crazy crush to it.
Is there something we are missing in camera for these results?
We shot mainly in 8K full readout - as that's where we plan to be - lowest compression settings.
Everything we bring in is to the right for exposure - but can't be salvaged. We tried shooting in what usually is a dark room with horrid fluorescent overheads - and outside in and out of shade - with hard light banging the background to stress test (which I've used many times as it's in my office) - and also shot dusk the day before. We can't gauge anything.
This job will be mainly run and gun - almost all steadicam - daytime exteriors - and we're nervous. That's why we were trying to shoot stress tests; but - we can't seem to gauge it for normal shooting without tremendous noise.
The camera is a rental and we shoot early Sunday morning.
Things are clipped that were well below 90 percent on the zebras (according the camera's monitoring) .
Indoors we tried to expose to the left - only to find it totally covered in crazy digital noise (same as the outdoor stuff). If we go to right - the shirt has crazy noise and the skin clips fast.
There's so much crush with the extended video lut applied (which looks nothing like it from the camera out) - that I thought there was a hidden gain function or something crazy.
I created a Google Drive folder with a RAW clip - and 2 stills in log - with comparisons to the 6K run and gun shoot we did (which was in extended rec 709) - and the same lens on the RED (graded - which I shot with the same AC we did our setup tests on). All were monitored in false color and I had tremendously different results with the Ursa 12K.
What is super concerning to me - is how the low light shot - when in extended video - the wall in the back clearly reads 50 on the waveform - but is covered in noise as if we pushed it stops and stops.
I'm sure it's just something we are missing; but I'll be honest - totally nervous as we're just trying to find a safe exposure range to ride during the day - with decent dynamic range within a stop or 2.
Any help would be appreciated!
https://drive.google.com/drive/folders/ ... sp=sharing
I'd like to add - for the daytime shot - I graded the footage from LOG - to where it looked on our monitor and the camera on set - and uploaded that still - VS - the insanely contrasty "extended video" that looks crazy. The regular REC 709 looks almost like a sepia music video from the 90's. But heavy noise remains on the shirt.
- Mike