How noisy is the camera in hot conditions

[david farland]

Q1. How noisy is the camera?
Ted: About ~20db. When the camera is in standby the fans will stay on. When you hit record, the fans stop.
If the camera gets too hot, it will turn the fans slowly on during takes. It also has a band pass filter for fan noise.




These handmade prototypes have the old sensor design without the Peltier sensor cooling system that will be found on the production cameras.......
What we learned:
1. The Peltier cooling system is mandatory.

Jim

Jim, In hot conditions, I'm assuming the fans will be used more to dissipate heat from the peltier device/sensor, thus reducing sensor noise but increasing fan duty cycle(noise).

Okay, we use an umbrella in the heat to keep the camera cool and silent.

But what's the temperature threshold before the fans turn on?


Cheers,
Dave

[Jarred Land]

the threshold is unknown until we put the peltier's in and test..

[david farland]

Thanks..........be nice to have the temperature displayed on the menu (as well as stock market prices!).
If you don't, and heat is a problem for them, I guess people could place a little thermometer strip on the side.

[PaulClements]

I'm sure Jim mentioned that the temperature or overheating warning was currently displayed at the rear of the camera, which no one was watching, I believe the intention is now to get that put onto the LCD/EVF, though don't quote me on that, Jarred or Jim would know for sure.

[David Battistella]

Some Stats on other Camera's (from the operating manuals)

Operating temperatures:

Sony F900
Operating temperature:
+32°F to +104°F (0°C to +40°C)

Ambient operating humidity:
25%- 85% (relative humidity)

Panasonic Varicam
Ambient operating temperature:
+32°F to +104°F (0°C to +40°C)
Ambient operating humidity:
Less than 85% (relative humidity)

Sony F950
Ambient operating temperature:
-4°F to +113°F (-20°C to +45°C)
Ambient operating humidity:
NA

Viper

The Viper manual does not even give an operating temperature range, just the attached image to warn you against operating in extremes.

There is a lot of talk about operating temperatures since Jim's last post and I wanted to just put it into perspective compared to what is available on the market right now.

Heat and humidity extremes (like the conditions they are shooting in Spain) are completely expected. It's not a surprise at all.

I'll bet that the RED team will have the camera operating within these limits as it's pretty much what we can expect from this level of camera.

I think it is very considerate of them to put a temperature gauge in the camera to warn us when we might be pushing it a bit to far.


David

[Stuart English]

I believe the intention is now to get that put onto the LCD/EVF,

A variety of real time status reports and system limit flags - over temp, low battery, end of media, are displayed in the RED-EVF display.

The most important of these are mirrored on the camera back via color coded LED's and the status LCD.

Likewise the RED-LCD can also carry such warnings, if desired.

[Eugene]

http://www.heapg.com/Pages/Products/images/temp.jpg

http://epub1.rockwellautomation.com/images/gl2/12362.jpg

Lots of big machines use Human machine interfaces (HMIs.) It would be cool if Red called the LCD on the back of the Red a human machine interface instead of a LCD and LED panel.

Google Allen-Bradley and look up their removable and programable HIM. (I like the removable part.)

Check out the machine below that uses a HMI. Ok, it is not cool like the Red, but some one has to make these things
http://www.fameccanica.com/en/prodotti/converting/ladynapkins/fnl_e99.htm

[Jason Murphy]

Lots of big machines use Human machine interfaces (HMIs.) It would be cool if Red called the LCD on the back of the Red a human machine interface instead of a LCD and LED panel.

I can see that causing all kinds of problems on set...

"Bob, go check on the HMI!"

"No, that OTHER HMI."

"Dammit Bob, the HMI on the back of the RED."

It would be "Who's on first" all over again.

EDIT: Not to be too picky here, but technically, a steering wheel, gas pedal and shifter is a human machine interface in that it allows a human to (rather elegantly) interface with a machine (in this case, a car). Or a keyboard and mouse for a computer, etc. Human machine interfaces have been around for a long, long time in various forms.

FURTHER EDIT: For those who don't get the above, or haven't worked on a film set, HMI also stands for "Hydrargyrum Medium-arc Iodide", a type of light used very commonly in films.

[JohnF]

Peltier cooling systems can generate a lot of heat when in operation surely a heatsink+fans would be better than fans alone? (Forgive me if there is one as I can't see where the heatsink might be on the pics I've seen of RED.)

Also peltier uses quite a lot of power in operation. By how much are you expecting this to effect battery run-time?

JohnF

[laguun]

How noisy is the camera in hot conditions?
Cheers,
Dave
scnr:
i have heard rumors that the camera is totally noiseless when used in environments over 4000 degrees (no matter if fahrenheit or celsius)