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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 :)

Temperature Issues with Epic-W

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Nevin Thomas

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Hey gang,

Following advice I've seen on the forum regarding getting the cleanest image on the Epic-W, I've tried setting my sensor temp to 43C adaptive. After getting both auto and manual calibrations done, the camera isn't actually getting up to temp. It's staying at the default 39C (in a room temperature studio, not out in a cold environment). As soon as it warms up beyond that, I hear the fans kick in and drop the temp back down to 39. Checking the settings in the camera show that the fan control is still set to 43 adaptive.

Any ideas on why this might be?
 
I'm having the exact same issue!! camera is not heating to the right temp. stops at 39-40 won't go to target temp.
 
I have had this issue before but if I remember once you set the new temperature away from the standard 39c to say 42c you then have to get the camera up to that temperature before doing the black shade or it defaults back to 39c. I have literally stuck my camera in a large cardboard box to get it up to temperature for the new black shade. Once you have done this process its easy to do new black shades as the camera naturally runs at the new temperature. Maybe Red has improved this kludgy process but it does not look like it has. Go to support and ask for a clarification so Red knows its such a pain in the ass.
 
Nevin Thomas said:
Hey gang,

Following advice I've seen on the forum regarding getting the cleanest image on the Epic-W, I've tried setting my sensor temp to 43C adaptive. After getting both auto and manual calibrations done, the camera isn't actually getting up to temp. It's staying at the default 39C (in a room temperature studio, not out in a cold environment). As soon as it warms up beyond that, I hear the fans kick in and drop the temp back down to 39. Checking the settings in the camera show that the fan control is still set to 43 adaptive.

Any ideas on why this might be?
Click to expand...

I AutoblackshAde mij epic w at temp 34 and a 44. No problems at all. If i put it on 34 adaptive goes to automatily to 34, same with 44. But yoy have to get the camera on the right temp while you you are in blackshading!
 
I understand that the cam has to be at the right temp before black shade. That isn't the issue. It's after the calibration. It won't reach target temp.
 
Roger Singh said:
Check your fan settings. I have had on more than one occasion with the fan settings resetting to 39 degrees. I run my sensor at 43 degrees as well.
Click to expand...

This. I've found the latest firmware to be fairly reliable in switching the fan target temp to what the calibration is set for, but for a while it would remain on whatever it last was instead of switching over based on your calibration.
 
The fans are always spinning no matter how cold the ambient temperature is.. Maybe it could be made to intelligently stop spinning if it detects the airflow is just too cold for the sensor to reach higher set temps.
 
Audy Erel said:
The fans are always spinning no matter how cold the ambient temperature is.. Maybe it could be made to intelligently stop spinning if it detects the airflow is just too cold for the sensor to reach higher set temps.
Click to expand...

That would be great. The minimum fan speed is 20%, so even if I manually control the fan speed I have to tape my fans in order to reach my target temperature.
It's just a little bit colder in Germany than in LA, RED!
 
Daniel Bichler said:
That would be great. The minimum fan speed is 20%, so even if I manually control the fan speed I have to tape my fans in order to reach my target temperature.
It's just a little bit colder in Germany than in LA, RED!
Click to expand...

Can you set a lower target temp? I have a calibration for 31C that is great for outdoor use in the winter time. I do have to cup the exhaust fans sometimes if it's REALLY cold but that lower calibration solves most issues.
 
Brendan_H_Banks said:
Can you set a lower target temp? I have a calibration for 31C that is great for outdoor use in the winter time. I do have to cup the exhaust fans sometimes if it's REALLY cold but that lower calibration solves most issues.
Click to expand...

My lowest target temperature is set to 30°C and that’s the lowest one I could get. The funny part is, that the camera isn’t possible to cool down to 30°C when in 10-15°C environment and set to adaptive. It works when I manually control the fan..

So there must be any software related problem or just a bad temperature-sensor..

Besides that, I tried to do some manual calibrations, because auto calibration always results with green tint in my shadows, but I recognised that it’s only possible to have 8-10 calibration profiles.

I wanted to have the following ones:

For warm conditions:
1/50 shutter @43°C for 25fps
1/100 shutter @43°C for 25fps, 50fps
1/150 shutter @43°C for 50fps, 75fps
1/200 shutter @43°C for 50fps, 100fps
1/240 shutter @43°C for 120fps
1/480 shutter @43°C for 120fps, 240fps

For cold conditions:
1/50 shutter @30°C for 25fps
1/100 shutter @30°C for 25fps, 50fps
1/150 shutter @30°C for 50fps, 75fps
1/200 shutter @30°C for 50fps, 100fps
1/240 shutter @30°C for 120fps
1/480 shutter @30°C for 120fps, 240fps
 
Daniel,

I don’t think it is necessarily a software or sensor fault. As I understand it the chip is optimized to work best at a high temperature. There looks like this is a fairly wide window but under 30c it may not be possible to get sufficient performance?
If you are working in extremely low temperatures a lot you could consider a camera barney or cover to insulate the camera. These were common once and it would be fairly easy to make one? Working in Antarctica we had insulated covers made for our Arri cameras that also offered good protection from knocks and scratches.
 
Thanks for the advice everyone! I'll try reinstalling the latest firmware and redoing the blackshade to see if that helps things.
 
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