Author Topic: CMOS Temperature  (Read 19994 times)

mSpider

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CMOS Temperature
« on: July 20, 2012, 09:18:54 AM »
Just got a 60d off of  craigslist, and I loaded ML 2.3 RC2 July 15...
Now I have a 550d AND a 60d to test...
I am wondering why the 60d displays temperature in raw units while my 550d displays temperature in degrees Celsius...

a1ex

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Re: CMOS Temperature
« Reply #1 on: July 20, 2012, 09:21:08 AM »
http://groups.google.com/group/ml-devel/browse_thread/thread/725ae6f424dd2917

The guy who had the infrared thermometer had a 550D, not a 60D. Raw units are not the same among cameras.

If anyone can do these measurements for any other camera (currently having data only for 550D), it would be great:
https://docs.google.com/spreadsheet/ccc?key=0Ar2tmqEUFi2vdExFZTZfcE04X3VEWTZhOHd4enVwU0E#gid=0

ilguercio

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Re: CMOS Temperature
« Reply #2 on: July 20, 2012, 01:05:30 PM »
Are those Ebay infrared thermometers reliable?
Canon EOS 6D, 60D, 50D.
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1%

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Re: CMOS Temperature
« Reply #3 on: July 20, 2012, 04:30:46 PM »
I have an IR thermometer on my RMS multimeter but I don't know how accurate it is or how I would get it at the sensor. I'll check the google group.

bouncyball

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normal raw shooting temperature
« Reply #4 on: October 25, 2013, 04:11:25 PM »
Hey guys just wanna know if the temperature value is correctly transformed to celsius from rawtemp for 5D3 nightly builds?

bouncyball

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Re: 5D3 ML Temp Accuracy
« Reply #5 on: November 01, 2013, 04:52:37 PM »
Well... my 5D3 shows temperature above 60 degree celsius after 7-8 min continuous menu browsing while in liveview. Is it normal? Anyone?

Monsanto

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Re: 5D3 ML Temp Accuracy
« Reply #6 on: November 01, 2013, 05:03:54 PM »
The camera will display a miniature red thermometer when its time to shut off or it will automatically shut itself off before it overheats. Take the CF card out let it cool and open the CF door let the heat out. U should be fine Ive overheated mine many times. ML heat figures are usually correct but readings can be thrown off on ocassions.

bouncyball

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Re: 5D3 ML Temp Accuracy
« Reply #7 on: November 01, 2013, 05:46:53 PM »
Thanx for reply. Can you remember the temp value showing by ML before this happened to your camera?

a1ex

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Re: 5D3 ML Temp Accuracy
« Reply #8 on: November 01, 2013, 05:58:51 PM »
+1, I also want to know the temperature at which it overheats, in order to show the indicator in red.

sammyb

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Average Temp Of 5D MK3?
« Reply #9 on: November 11, 2013, 11:40:46 AM »
What temperature should the 5D Mk 3 average at in normal working conditions (not to cold, not to hot). I'm running the latest nightly build for my 5D and I'm easily reaching temperatures of 60ºC.

Liveview is set to on and only has a crop guide overlay, I'm shooting RAW at 1920x1080 24fps and I'm using a genuine Canon battery.

RenatoPhoto

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Re: Average Temp Of 5D MK3?
« Reply #10 on: November 11, 2013, 01:46:17 PM »
I tested my 5D3 from cold start:

LiveView from 15C to 66C in 30 minutes
Stabilized at 66C

I covered the camera with cloth in 6 minutes in climbed to 73C
Stabilized at 70C in 11 minutes

I started RAW REC 1920x1080 at 30 fps
Temperature increased to 72 C in 5 minutes
Stabilized at 72C

I started Playback in 8 minutes drop to 58C

I started LV again in 6 minutes stabilized at 67C

It would seem that normal operating temperatures 50 to 73C

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RenatoPhoto

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Re: Average Temp Of 5D MK3?
« Reply #11 on: November 11, 2013, 01:59:59 PM »
And also noticed that the temp can sometimes jump 3C say from 70 to 73C so the temp monitoring system may not be 100% accurate.
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sammyb

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Re: Average Temp Of 5D MK3?
« Reply #12 on: November 11, 2013, 02:22:09 PM »
Thank's for being so in-depth Renato! Yea I didn't know how accurate it was either but I didn't think having my camera running at it's maximum temperature continuously was very good for it.

Has you're camera overheated during long recording sessions? Like even run n gun stuff?

RenatoPhoto

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Re: Average Temp Of 5D MK3?
« Reply #13 on: November 11, 2013, 02:29:47 PM »
Never so I dont know what is the Canon shut off temp.  I usually only record short stuff.
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sammyb

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Re: Average Temp Of 5D MK3?
« Reply #14 on: November 11, 2013, 02:50:28 PM »
Never so I dont know what is the Canon shut off temp.  I usually only record short stuff.

Sweet, as long as you haven't had any issues I feel more comfortable now. I'm travelling around Bali and I don't want a camera that's going to be overheating on me all the time, hopefully it doesn't let me down.

Tikigod19

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Re: Average Temp Of 5D MK3?
« Reply #15 on: December 04, 2013, 01:17:07 PM »
I was concerned about this too ,mine shot from 33 to 56 degrees in 15 mins and I switched it off thinking was something wrong. Is there an official word on what is an acceptable temp and also will it just auto shut off when it gets too hot or are we at risk of damaging our cameras?

Frank209

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normal raw shooting temperature
« Reply #16 on: December 18, 2013, 02:29:46 PM »
I've been getting about 70 degrees celcius (158 F) with 1920*1080 on a 5d3

how about you?

jose_ugs

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Re: normal raw shooting temperature
« Reply #17 on: December 18, 2013, 03:43:09 PM »
That sounds a bit scary... The maximum i'm getting is about 50something for the same res/cam

Markus

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Re: normal raw shooting temperature
« Reply #18 on: December 18, 2013, 03:47:17 PM »
For long recordings my camera also goes up to 70C. MkIII

arrinkiiii

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Re: normal raw shooting temperature
« Reply #19 on: December 18, 2013, 04:44:34 PM »

My camera go's to 52 and then it auto-disconnect the camera.

7D

Letni

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Re: normal raw shooting temperature
« Reply #20 on: December 18, 2013, 10:38:30 PM »
Oh, well, I would also say that the temperature has something to do with the ambient temperature.

If one is of course filming in the summer at 35 ° determines warmer than in spring at 12 °.

Or?  ;)

Frank209

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Re: normal raw shooting temperature
« Reply #21 on: December 18, 2013, 10:41:36 PM »
shooting indoors at 22 till 25 celcius (that was a private pool)
outdoors at 8 celcius,   Both about the same.  Camera between 60/70 degrees celcius.

Still curious about other camera's temperature.
Just wondering because it's bright red all the time. :)


a1ex

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Re: normal raw shooting temperature
« Reply #22 on: December 18, 2013, 10:47:27 PM »
Here's what you guys should find out:

- does the displayed temperature match the ambient temperature when you start the camera after a long period of inactivity? (e.g. in the morning)
- how does the displayed temperature relate to the physical sensor temperature? (check with an infrared thermometer)
- at what displayed temperature does Canon temperature warning appear on the screen?

escho

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Re: normal raw shooting temperature
« Reply #23 on: December 18, 2013, 11:57:10 PM »
Did a short test on my 600D, booting without ML:

video duration: 22min
temp at 22min, read with exiftool: 52°C
instantly booting ML, temp shown by ML about 75°C

I will do some further test next week, but for me this looks like a math-problem

Edgar
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Frank209

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Re: normal raw shooting temperature
« Reply #24 on: December 19, 2013, 11:31:34 AM »
This is what canon has to say about this.

http://www.canon.co.uk/Support/Consumer_Products/products/cameras/Digital_SLR/EOS_5D_Mark_III.aspx?faqtcmuri=tcm:14-731490&page=1&type=faq

Haven't found out the temperature when the overheating icon will appear, never saw that thing in the first place to be honest.

Just tested the camera in the morning.

Startup with magic lantern, no recording, no raw:
Global draw on, zebra's on, histogram on RGB.
5d3 was on a rig, so no heat from my hands/body
shot with external monitor.
Room temperature was 20 °C
All temperatures came from magic lantern. i don't have an infrared meter.

Startup:    19 °C   (a1ex, difference of 1 °C with room temperature)
after 20 seconds  24 °C
1 minute:  29 °C
2 minutes: 33 °C
4 minutes: 36 °C
8 minutes: 47 °C
And it kept there for 30 minutes, quit test after that.

let it cool down a bit and went recording continuous

Recording H264 codec:
startup    36 °C
1 minute  43 °C
2 minutes 47 °C
4 minutes 49 °C
8 minutes 49 °C
quite stable

Raw 1080X1920 (single take)
startup: 34 °C
right after i put on raw in the menu: 42°C
10 seconds 44 °C
20 seconds 47 °C
30 seconds 47 °C
40 seconds 47 °C
1 minute: 47 °C
2 minutes: 48 °C
3 minutes: 55 °C (orange)
4 minutes: 55 °C
5 minutes: 58 °C
6 minutes: 58 °C
6.30 min : 60 °C (red)
7 minutes: 62 °C
8 minutes 60 °C
9 minutes 59 °C
10 minutes: 59 °C
It kept stable from 6.30 minutes, 60/59 constant.

checked if there was a difference in heat with higlights or darks but no difference.  (this included zebra striping galore)

Raw without monitor:

startup: 33 °C
right after i put on raw in the menu: 33°C
10 seconds 40 °C
20 seconds 40 °C
30 seconds 40 °C
40 seconds 40 °C
1 minute: 43 °C
2 minutes: 45 °C
3 minutes: 48 °C
3.30 min : 54 °C   (orange, went straight up from 48 to 54)
4 minutes: 54 °C
5 minutes: 56 °C
6 minutes: 56 °C
7 minutes: 59 °C
8 minutes 62 °C  (red)
9 minutes 69 °C
10 minutes 70 °C
kept stable 70 °C after that.

After this i did another test with the monitor again, but that gave quite similar results as the earlier test.

tried putting in the monitor after various minutes shooting without, cooled down a bit (5 °C)
tried all tests again with alot of different shots (starting, stopping) but didn't really affect the heat.

it seems that the monitor "cools" it for about 8/10 °C