Epic X Black Shading Calibration Failure

[Paul E. McCarthy]

I was wondering if anyone here has had any Black Shading calibration failures. And if so what did you do to fix it.

Thanks.

:mad2:

 

[Meryem Ersoz]

the failures that I have experienced have occurred when I tried to cut corners on preventing light leaks - best to remove the lens completely, apply sensor cap, and cover with black duvetine or something, if you're outside - indoors, I keep the camera in a bathroom or other completely dark room and have never had failures....

if you experience a failure, you need to shut down - don't try to black shade again, you will lose time and repeat the failure. hope this helps.

 

[jimhare]

I have only had one failure, and it was in the exact conditions that Meryem described...

 

[Steve Marshall]

I had a failure cos I forgot to put an SSD in there :crazy:

 

[Jonas Rejman]

I had a failure cos I forgot to put an SSD in there :crazy:

haha, that NEVER happened to me ... :ciappa:

 

[Johnny Friday]

Numerous failures here when trying to blackshade at high frame rates for overcranking....in fact i couldn't so i just blackshaded at the timeline frame rate instead. No fix found.

 

[Curran Giddens]

Some tips below:


1) upgrading to new firmware
2) big ambient temperature changes
3) long exposure times (longer than ~1/15th sec)
4) very short exposure times (shorter than around ~1/1000th)
5) beginning of a project


Remember to black shade at default after long/short exposure black shade when your finished.

Set resolution to 5K FF

FPS doesn't affect black shading but shutter time does.
More so under 1/20th or so than at higher shutter speeds.

Set it for the longest shutter time if you're switching between different times. But redo it for 1/48 when you go back normal shutter time.


My own tip is the same a Meryem's. I always put the body cap on and put a shirt or towel over the mount.

 

[Christian Munoz D]

Numerous failures here when trying to blackshade at high frame rates for overcranking....in fact i couldn't so i just blackshaded at the timeline frame rate instead. No fix found.

Johnny, I am having the same problem here. Did you found a fix?

 

[Andrae Palmer]

Johnny, I am having the same problem here. Did you found a fix?

I'm having the same issues at 2k WS / 300fps / 384th shutter / 5600k on build 2.0.5... did anyone find a fix? This is happening on two different Epic-X cameras and consistently ending in failure.

 

[Paris Remillard]

Same issue as Andrae. So, Curran, are you saying that if you are going to be shooting at 2K at higher frame rates, or even at 4K or 5K, you shouldn't have the camera set to all of the format and frame rates settings you will be using? Only the shutter speed is important for the black shade? And leave it at 5KFF regardless of the actual resolution and format you will be using?

 

[Christian Munoz D]

I'm having the same issues at 2k WS / 300fps / 384th shutter / 5600k on build 2.0.5... did anyone find a fix? This is happening on two different Epic-X cameras and consistently ending in failure.

The issue is on Tech Support hands since before Christmas. Up to date no fix found.
Will post if I have any new feedback from Red.

 

[Andrew Walker]

I've only had one failure while doing a black shade. I have two different BS saved in the camera that I switch between. One that's for 24fps recording or high speed and another that is for 1 second exposures. Switching between the two it pretty easy but sometimes a power cycle is required.

 

[Andrae Palmer]

I've only had one failure while doing a black shade. I have two different BS saved in the camera that I switch between. One that's for 24fps recording or high speed and another that is for 1 second exposures. Switching between the two it pretty easy but sometimes a power cycle is required.

Have you done a black shade at 300, 120 or 96fps?

--------------

Just found this while going through the board:

Black shading is always done at the max resolution so for now best to do it at the normal 5k resolutions.

http://reduser.net/forum/showthread.php?62107-Black-shading-with-red-epic

Would be great if this was placed in the manual. So don't worry about resolution settings. I guess iso and shutter speeds are the main concerns.

 

[Andrew Walker]

Have you done a black shade at 300, 120 or 96fps?

--------------

Just found this while going through the board:



http://reduser.net/forum/showthread.php?62107-Black-shading-with-red-epic

Would be great if this was placed in the manual. So don't worry about resolution settings. I guess iso and shutter speeds are the main concerns.

Why would I want to blackshade at 300fps or even 96fps. I don't see the point of doing it and Epic doesn't seem to like it. If there's a difference please post some stills from footage.

 

[Andrae Palmer]

So if FPS and resolution doesn't matter in regards to black calibration... If I want to shoot at 300fps and 1/600th of a shutter. I would black calibrate at 5K FF, 24FPS and 1/600th shutter? If that's the case then I just tried it and it failed on me again.

So the basic question is how do you black calibrate for high speed filming?

 

[Andrew Walker]

So if FPS and resolution doesn't matter in regards to black calibration... If I want to shoot at 300fps and 1/600th of a shutter. I would black calibrate at 5K FF, 24FPS and 1/600th shutter? If that's the case then I just tried it and it failed on me again.

So the basic question is how do you black calibrate for high speed filming?

The answer is you don't. As I understand it you just calibrate for 5K 24fps 1/48th. If your going under 1/15th a second in shutter speed then another BS is needed.

 

[Christian Munoz D]

Why would I want to blackshade at 300fps or even 96fps. I don't see the point of doing it and Epic doesn't seem to like it. .

Matter when you have notorious changes on ambient temperature and/or faster shutter speed.

 

[Andrae Palmer]

Yeah I thought it mattered for faster shutter speeds too... I guess not.

 

[Andrew Walker]

Matter when you have notorious changes on ambient temperature and/or faster shutter speed.

Yes, if there's a change in altitude or sizable change in ambient temp. Then yes you should do a BSC. Not for a fast shutter speed. I haven't seen any artifacts from running the shutter at max speed, even at 96fps or 300fps with relative shutter on.

 

[Zeb B]

The answer is you don't. As I understand it you just calibrate for 5K 24fps 1/48th. If your going under 1/15th a second in shutter speed then another BS is needed.

I've heard the full range of possibilities of the Why, When and How to BSC so until RED gives us a formal process & proceedure I'm thinking we're all just looking for a light switch in a dark room.