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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Black shade temprature experiment.

Omar Saad said:
By the way, how many different frame rates do you guys black shade for? 24, 120, 300, etc?
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Omar, I'm on time base 23.97, same for frame rate, and 180 degree shutter. iso was set to 640 before black shading.

Forgot to mention I am on firmware build 3.3.3
 
Haha this is too funny. I was actually gonna post this procedure and ask everyone if they thought it would work. But I felt stupid and never got around in testing it. Sounds like it should work. Gotta try it.
 
Omar Saad said:
By the way, how many different frame rates do you guys black shade for? 24, 120, 300, etc?
Click to expand...

From my understanding, you only need to black shade if you are going from 24, to a low framerate, like 1 or 2fps.
 
I've been overheating my Epic and doing black shades for the past few months now and it does help a great deal. I had a noise issue and was advised to get the camera up to a higher temp to black shade and im happy. I might try higher than i have been now as a test.

(EDIT) When i say overheat. I dont mean run it to max - just working it up to slightly above running temp. 45-50 works.

Andi
 
Im just wondering... so if I do black shading at the "worst" possible setting... hotter sensor and fast shutter (above 1/1000) would that black shading, at that setting, be the "ultimate setting"? Would that work in any other situation?...not having to do another shading for colder temps and a 1/48th shutter. Or would you still have to do a black shading? I don't know how else to explain it... hope someone will understand what I'm trying to say... :/
 
I assume everyone figured I just had a typo. In my original post I meant to say temp of 46/70... not 66/70
 
The standard advice is to black shade at working temperature.

Graeme
 
Michael Alessandra said:
Im just wondering... so if I do black shading at the "worst" possible setting... hotter sensor and fast shutter (above 1/1000) would that black shading, at that setting, be the "ultimate setting"? Would that work in any other situation?...not having to do another shading for colder temps and a 1/48th shutter. Or would you still have to do a black shading? I don't know how else to explain it... hope someone will understand what I'm trying to say... :/
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Black shading while the camera is really hot and then shooting in a cold environment (especially at a lower shutter speed) is not going to work as the sensor will be at a much cooler temperature and probably less evenly heated.
 
Tehben Dean said:
I'm still hoping for the ability to store several Black Shade presets to be implemented soon.
Will be really handy for going from shooting inside to 15degrees below freezing outside... :)
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Yeah, all of the documentation seems to suggest that you can store multiple BS settings, but really there's only "factory default" (which is 38c at 1/42nd for me... just weird) and the userHS, which often changes with time-ramping projects or indoor/outdoor temperatures... Not fun. If I could, I'd have a settings for each major change -- low-speed, high-speed, just right, and just-right-with-cooler-temps for outdoor Canadian winter shoots.
 
It would be nice if the 'sensor temperature @ black shade' and the 'sensor temperature of this clip' were recorded in meta data.
 
Well over heating is a relative term. We arent talkign about taking a blow torch to the chip. The camera will go into auto cool if it over heats. Basically, B/S at your rolling Fan level, not your standby level.
 
Lately I have been black shading at max temperature. My procedure: Set standby fan speed to 25%, wait 20 minutes until the fan kicks on at 74C. Wrap black jacket around the camera to further shade the port cap. Calibrate and go to lunch. Set standby speed to 75-100% and run speed to 37%. No complaints yet.
 
Tehben Dean said:
Black shading while the camera is really hot and then shooting in a cold environment (especially at a lower shutter speed) is not going to work as the sensor will be at a much cooler temperature and probably less evenly heated.
Click to expand...

Thanks Tehben :)
 
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