[pure-silver] Re: wireless mini dehumidifier

First of all I really don't think you want a very tight fitting lid.  You want either extremely dry air (which in the south in the summer is about like saying you are spending thousands of dollars on photography equipment to save money ie fantasy land) what ever moisture that is in the air is trapped.  Then as temperature varies that mositure will again tend to condense in all the wrong places.  Film is a bit different in that it comes in a factory sealed foil package.  What air is in there is in there, but that was controlled during manufacture.  Zip lock or not its sealed.  4x5 is a bigger problem especially after the box is opened.

Cold air is more dense than warm so there is typically less room in that air for mositure, BUT you would have to get the lens in that enviroment in dry air somehow to take advantage of it.  When you put the container in the fridge, the air around cools and forces the air to condense on whatever it can  IE your lens.  The descecant would help, but every time you open the fridge door more mositure would be let in the fridge and again you have a problem.

Room temp will help.  Without the heating an cooling the mositure is likely to stay suspended in the air till you are in dry air.  Now if you have to let the temperature vary, I'd let it move with what the natural environment.  There is a lot more air outside the lens than inside.  Most of the condensation would form on the outside where you can easily clean.  This summer has been really brutal with the heat.  Already had 20 days of temps over 100 here

-------- Original Message --------
Subject: [pure-silver] wireless mini dehumidifier
From: Shannon Stoney <shannonstoney@xxxxxxxxxxxxxxx>
Date: Thu, July 30, 2009 5:58 pm
To: pure-silver@xxxxxxxxxxxxx

One of the things they have at Amazon is a mini wireless dehumidifier.
I was thinking I could put one of these, and the lenses, in a plastic
box with a tight fitting lid, and maybe tape it up. Has anybody used
one of these? I can't tell how big it is from the web page:

http://www.amazon.com/exec/obidos/tg/detail/-/B000H0XFCS/
ref=pd_luc_mri?%5Fencoding=UTF8&m=ATVPDKIKX0DER&v=glance

This looks pretty good: supposedly it lasts for several months, and
then you plug it in to dry it out again.

--shannon


On Jul 30, 2009, at 7:01 PM, Jim Brick wrote:

> There are myriad desiccant packets, packages, stuff, etc, available on
> Amazon:
>
> http://tinyurl.com/lk7vzk
>
> One of these would be my choice for drying out a camera enclosure.
>
> Jim
>
>
> On Jul 30, 2009, at 4:57 PM, Dennis P wrote:
>
>> I would be worried about that for the reason of condensation being
>> created when you warm the lenses up. I have ruined a box of sheet
>> film by putting it in the freezer after it was open. Then later I
>> took it out and took some film out of it and let it sit on the
>> counter long enough to thaw. I didn't check but it had created
>> condensation on the film in the box and the sheets stuck together
>> when I re froze them. So I personally would find a desiccant of some
>> type and put that in a closed box with the lenses to keep them dry.
>> Dennis
>> On Jul 30, 2009, at 4:12 PM, Shannon Stoney wrote:
>>
>>> Hi, it's been an unusually humid summer here in TN, with almost
>>> nightly rainfalls. It's great to see the little creeks and springs
>>> running again after the long drought, but I'm worried about my
>>> lenses. It's so humid that I'm afraid they will get fungus in them.
>>> Even with the AC running, I can't get the humidity much below 70%.
>>> And it's expensive to run the AC. It suddenly occurred to me today
>>> that I could put them in plastic boxes in the fridge! I checked the
>>> humidity in there and it's 45%.
>>>
>>> Is there anything wrong with this idea? Nobody will eat them, I
>>> don't think, as I'm the only person here right now.
>>>
>>> --shannon
>>>
>>>
>>> http://shannonstoney-twors.blogspot.com/
>>> http://branguslane.blogspot.com/
>>> http://www.flickr.com/photos/shannonstoney/
>>> http://www.eyeballkicks.blogspot.com
>>>
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http://shannonstoney-twors.blogspot.com/
http://branguslane.blogspot.com/
http://www.flickr.com/photos/shannonstoney/
http://www.eyeballkicks.blogspot.com

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