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Re: [APML] Dew prevention on camera lens
Allan,
For those you are not do-it-yourselfers, the Kendrick Dew Remover
system is a very good way to deal with dew. Just make sure you do not
use your car's battery, as you don't want to end up stuck in a remote
place. From the current draw listed on the Kendrick site you can
calculate the Amp-Hrs needed for a 12V battery to power the Kendrick.
Or, if you have electric mains available, you can use a 12V power
supply with a cigarette lighter adapter.
I have used a Kendrick Dew Remover controller with a camera lens and
12V battery in the Catskills/Hudson Valley region, where the humidity
gets to 100% by the end of the night. When I haven't had power issues
(power supply not rated for the amperage, or a failing battery), the
Kendrick was very good at preventing dew. I now shoot mostly with
medium format Hasselblads, and the system even keeps the 30mm fish-eye
clear, when set appropriately. The only issue is getting the setting
right, as you don't want to heat the lens too much or too little. I am
experimenting with the new, more sophisticated, controller which is a
bit more dependent on a good supply of power, which should not be an
issue with one heater, but I regularly run with 4 or more heaters.
Taras
On Jul 7, 2005, at 1:39 AM, Allan & Julie Whetzel wrote:
> Hello-
>
> I'll be in the high Sierra Nevada in early August and wanted to do
> some star trail photography while camping. I'll probably go 2-3 hours
> with some exposures. I have a 28mm Zuiko f3.5 lens & hood on my trusty
> OM1. I'd like to avoid dew on the lens - so I was contemplating the
> purchase of a Kendrick standard controller and as described on their
> website a "2 inch heater for 2 inch eyepieces, 50mm finders, some
> camera lenses."
>
> The 28mm Zuiko lens is 2" in diameter so it seems to me this would be
> the setup I'd want to get. If so - will it keep dew off the camera
> lens for long exposures? Would I just wrap the heater around the lens
> as close as possible to where the hood starts?
>
> Any advice from the experienced would be appreciated!
>
> Thanks,
>
> Allan
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>
>
--
<end of message>
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* Taras R. Hnatyshyn tarashnat@earthlink.net *
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