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Humidity and Telephoto/Zoom lenses - preventing internal lens fogging
Old 02-21-2005, 05:20 PM   #1 (permalink)
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Hi - i was down in Miami this week-end at a grand opening for a hotel/club and shooting the patrents/club personel/models/celebs outside the event and i had taken all the nessasary precautions with my equiptment - letting it come to outside temp etc., etc.

As the night went on it became more and more humid - (location was right on the beach front) and after about an hour of shooting and zooming my lens to full length many times - it fogged and i couldn't figure it since it showed no sign on the outer lens of fogging or lens closest to the camera body. I had it tested yesterday and apparently when i zoomed to full legth it sucked in enough humid air to fog the internal lens - when it dryed it left a residue. When i look at it with a magnifing glass i can see the wisps of how the humid air came in...

How do i prevent this from happening again? - i live here and like night shooting - but the humidity is going to cost me a fortune in cleaning bills of my lenses if this keeps happening.

Could use some help with this - tips/tricks or anything advice would help.

TIA - chase
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Re: Humidity and Telephoto/Zoom lenses - preventing internal lens fogging
Old 02-21-2005, 07:07 PM   #2 (permalink)
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wow..that is a real problem. What Lens is it ? I have used my 70 - 200 mm with no trouble. It's the nikon vr 2.8 . I have gone from inside the ac to the outside on the beach with 99% humidity with no trouble many times. I would look into getting a new lens that you can trust.

Mike

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Re: Humidity and Telephoto/Zoom lenses - preventing internal lens fogging
Old 02-21-2005, 09:28 PM   #3 (permalink)
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I grew up in South Florida and shot there for many years with Nikon and Mamiya equipment. Although, I've experienced external lens elements becoming fogged due to a quick change in temperature, I've never recalled having a lens fog internally.

If you are getting moisture from humidity in February it must be really a hot, wet and humid "winter". Usually, winter in South Florida is the least humid season. I bet you can't wait to see what happens to your equipment in July and August....

Your residue is probably salt. Salt spray and mist are a big problem especially if you are very near the ocean and it is windy. BTW - If there is salt on you camera be sure to wipe it off immediately or else you could have a corrosion problem to go along with you fogging.

I'd suggest storing your equipment in an air tight case with some desiccant air dryers. When mounting a lens to the camera body, you could try displacing the moist air by blowing dry air in with a can of compressed air.

Good luck,
Michael

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Re: Humidity and Telephoto/Zoom lenses - preventing internal lens fogging
Old 02-21-2005, 09:52 PM   #4 (permalink)
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Hey Mike - it's not a bad lense - it was my 35mm carry around camera i was using - lens a Sigma 35-135 X-III 3.5 zoom.

Hawaii - thank the Big Kanhona it wasn't my Mamiya equiptment - whew! - but that's the reason i ask - better to find out with the 35 than my MF.

I just happened on this event while i was there for another event - The one i was there, shot during the day i used my MF equiptment - but i was walking South Beach that night and saw this event going on and started shooting - got Puff Daddy - bunch of models - staff, etc. but the lens fogged last part of the second roll going into my third roll of film. I got some shoot arounds with the softness - but couldn't figure the fogging issue till i had it tested a couple days later.

I never had it happen before but i usually bring a few straight lenses, the three basics. This being a run around camera (one I keep on me at all times) i use the zoom.

the weather - was cold, hot, cold, hot, all day and humid that night with a decent wind. Salt is what was stated might be the residue lingering on my lense. it's going in for cleaning tomorrow or the next day...

Like i said that's the reason i ask - fogging prevention for the future happenings with my other equiptment.

chase
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Re: found something that would help
Old 02-22-2005, 04:55 PM   #5 (permalink)
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I did a search and found a home remedy that would help me in high humid areas via the guys that do landscape - tropical - tropics photography - simple remedy actually - looks goofy but should work.

but thanks for replying

chase
the starvng artist
 
 
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