According to Goldenrod's tech specs an 8 watt heater can handle up to
100 cubic feet and 12 watts can handle up to 200 cubic feet.
<http://www.midwayusa.com/viewProduct/default.aspx?productNumber=1138614184>
I can't imagine that the small wattage heaters would significantly raise
the temperature above ambient.
Chuck Norcutt
On 3/26/2011 9:56 AM, Brian Swale wrote:
> Marc wrote
>
>> Just taken from a 6-8C fridge, it would never be warmer than ambient air
>> here. :)
>>
>> Cheers,
>> Marc
>> Noosa Heads, Oz
>>
>> On Friday, 25 March 2011, Ken Norton<ken@xxxxxxxxxxx> wrote:
>>> Brian, there would be no condensation if the camera is warmer than
>>> ambient air.
> Yes, I was aware that ambient temperatures in coastal Queensland
> never/rarely drop below 10 deg C.
>
> There is another good reason, I believe, for using cold storage such as this
> with (eg) silica gel, rather than a small heater, and it is this: higher
> temperatures are likely to vaporise off the more volatile fractions of the
> greases and oils used in lenses and cameras, thus leading sooner to a need
> for a re-lube as the lubricants become degraded and stiffer, making focusing
> and other movements more difficult. Cooler storage temperatures will get
> around this real issue.
>
> Now, as ( as I understand it) the specialised lubricants are difficult for
> camera technicians to obtain, so the need to fend off the evil hour is
> greater.
>
> Brian Swale.
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