EVF fogged lens - strategies to reduce?

[Michael Morlan]

Hi all,

I'm shooting in Puerto Rico and have suffered an internally fogged EVF during my day shoots. Any thoughts on how to reduce this occurrence?

I've baked it in the sun a bit and that helps.

Thanks,

Michael

 

[Vance Colvig]

Try locating a company or University with a vacuum chamber. Maybe even an aircraft instrument overhaul shop. If you place the EVF in the chamber and pump it down to 1/2 atmosphere (equivlent to 18,000 feet), that should remove most of the moisture.

 

[Nathan Garofalos]

Put it in a bag of rice, that will soak up all of the moisture that's accumulated inside the EVF.

 

[Ketch Rossi]

Hi all,

I'm shooting in Puerto Rico and have suffered an internally fogged EVF during my day shoots. Any thoughts on how to reduce this occurrence?

I've baked it in the sun a bit and that helps.

Thanks,

Michael

Michael,

use Tenshredd7 suggestion, done so many times, when I shot in very harsh environments, and even so the "L" series lenses and 1D Canon EOS bodies are well protected, I had two lenses with the same problem, the rice does ion deed work well, they absorb the humidity build up, W/O having to spend $$$ in a LAB, hope that the Humidity has not set long or it will cause stains and then the rice trick will not do.

Good luck.

ciao

Put it in a bag of rice, that will soak up all of the moisture that's accumulated inside the EVF.

 

[Ketch Rossi]

Hi all,

I'm shooting in Puerto Rico and have suffered an internally fogged EVF during my day shoots. Any thoughts on how to reduce this occurrence?

I've baked it in the sun a bit and that helps.

Thanks,

Michael

After a second reading:

if you also saying that you are having your EVF fogged internally every time you go out to shoot in those conditions, then you might also use an other Trick I use, which is have ICE packs and HOT packs and put them on the EVF before shooting so to reach the same temperature of the outside environment so to eliminate condensation internally all together.

For the Humidity I also have Dry Packs, but they must be the kind that have tiny prespiration filters in their covers, a pain to work like that but they all work well.

ciao

 

[Mitch Gross]

The old doc shooter's solution is to cut a tiny hole in the eyepiece bellows and stick in a short length of surgical tubing. Stick the other end of the tube in your mount and suck in air whenever it starts to fog. Works great.

 

[Harry Clark]

Reread the post, Mitch. I believe he's indicating that the fogging is INTERNAL.
Is it possible that there is a gasket that normally seals the inside of the EVF that's damaged?
Don't let the condensation stay on too long. You'll end up with water spots. I like Ketch's idea of the rice. I was going to suggest sealing it in a bag with a couple of those silica gel tin cans.
I hope Epic will have an eyepiece heater.
Cheers,
Harry

 

[John Brawley]

Reread the post, Mitch. I believe he's indicating that the fogging is INTERNAL.
Is it possible that there is a gasket that normally seals the inside of the EVF that's damaged?
Don't let the condensation stay on too long. You'll end up with water spots. I like Ketch's idea of the rice. I was going to suggest sealing it in a bag with a couple of those silica gel tin cans.
I hope Epic will have an eyepiece heater.
Cheers,
Harry

Or even better. Use the Aaton method of elctrostatic charge. Much less power consumption.

jb (currently shooting in LA)