Forums: Skydiving Disciplines: Photography and Video:
Fisheye lenses in Florida

 


Premier faulknerwn  (D 17441)
Moderator
Mar 1, 2013, 4:01 PM
Post #1 of 9 (1555 views)
Shortcut
Fisheye lenses in Florida Can't Post

I travel to Florida every February to play CRW and photograph it. Florida is notoriously more humid than in TX.

My Canon 10-22 has no issues with fogging ( though it does have a simple UV filter on it). I want to be able to take fisheye photos though because they look so frigging cool. Last year I used my Canon with a 8mm lens - the common one thatis sold everywhere. Took beautiful photos other than the spot of fog dead center. Nothing worked to clear it. Thought I just had a lens with some moisture in it.

Wanted to play with my Nikon D7000 this year so I took both it and my T4i to Florida. Had the same brand of Fisheye lens on my Nikon - same problem. My Tokina 11-16 lens had no problem without even a filter.

I think because the fisheye lenses are so round that the humidity in Florida is making the dot on the lens. It doesn't do it in TX.

So my goal before I got back to Florida next year is figure out to successfully take fisheye photos!!!!

Does anyone successfully use this kind of lens in Florida? I really like the look I can get when I get my brightly colored canopy curved around the canopy formation in front of me. I'd love the look even more if I could get it without a dot of fog dead center..

I borrowed a friends Fisheye opteka lens for my cx for some jumps - it got the same dot of fog in the center while my regular video camera wide angle didnt.

It's hard for me to test this stuff in Texas because it very rarely gets so humid here..

Any ideas of how I can fix this before next year?


Squeak  (E 1313)

Mar 1, 2013, 11:56 PM
Post #2 of 9 (1473 views)
Shortcut
Re: [faulknerwn] Fisheye lenses in Florida [In reply to] Can't Post

In reply to:
I travel to Florida every February to play CRW and photograph it. Florida is notoriously more humid than in TX.

My Canon 10-22 has no issues with fogging ( though it does have a simple UV filter on it). I want to be able to take fisheye photos though because they look so frigging cool. Last year I used my Canon with a 8mm lens - the common one thatis sold everywhere. Took beautiful photos other than the spot of fog dead center. Nothing worked to clear it. Thought I just had a lens with some moisture in it.

Wanted to play with my Nikon D7000 this year so I took both it and my T4i to Florida. Had the same brand of Fisheye lens on my Nikon - same problem. My Tokina 11-16 lens had no problem without even a filter.

I think because the fisheye lenses are so round that the humidity in Florida is making the dot on the lens. It doesn't do it in TX.

So my goal before I got back to Florida next year is figure out to successfully take fisheye photos!!!!

Does anyone successfully use this kind of lens in Florida? I really like the look I can get when I get my brightly colored canopy curved around the canopy formation in front of me. I'd love the look even more if I could get it without a dot of fog dead center..

I borrowed a friends Fisheye opteka lens for my cx for some jumps - it got the same dot of fog in the center while my regular video camera wide angle didnt.

It's hard for me to test this stuff in Texas because it very rarely gets so humid here..

Any ideas of how I can fix this before next year?
i have a sock filled with silica gel that I keep in my camera bag, it has served me very well in tropical climes. Also try to not have your camera in extremes of temp, i.e. cold AC'd room then walk out into the humid day.


Premier faulknerwn  (D 17441)
Moderator
Mar 2, 2013, 5:10 AM
Post #3 of 9 (1421 views)
Shortcut
Re: [Squeak] Fisheye lenses in Florida [In reply to] Can't Post

I was in lake wales so there was no ground ac. I even bought desillicant ( or whatever that stuff is called ) and had it in my camera bag.


DougH  (D License)

Mar 2, 2013, 10:02 AM
Post #4 of 9 (1382 views)
Shortcut
Re: [faulknerwn] Fisheye lenses in Florida [In reply to] Can't Post

This is a crazy idea, but I wonder if you could apply some sort of heater to the lens body.

You need to keep the glass element above the dew point right?

I don't know if there is enough conduction between the parts of the lens but I am picturing some heat tape around the body of the lens and a extra battery pack.

Crazy or unworkable, probably. It was just something that popped into my head!


jumpwally  (D License)

Mar 4, 2013, 1:07 PM
Post #5 of 9 (1259 views)
Shortcut
Re: [faulknerwn] Fisheye lenses in Florida [In reply to] Can't Post

Mr.DSE will know.....Cool


Premier PhreeZone  (D License)
Moderator
Mar 5, 2013, 6:34 AM
Post #6 of 9 (1204 views)
Shortcut
Re: [faulknerwn] Fisheye lenses in Florida [In reply to] Can't Post

Part of the issue with Fish eye lenses is the glass is much thicker than traditional lenses and this leads to the glass not warming as fast as the air around it as we descend from higher altitudes. In lower humidity environments the lens is able to stay above the dewpoint and it does not accumulate any moisture or fogging. In high humidity environments with large temperature changes it makes it much more likely for the fogging to occur. The thick glass of the fisheye will just hold the colder temperatures longer than the thinner glass of other lenses so it can fog for longer.

You can either keep the glass as warm as possible so that it does not suffer the thermal changes that would raise the probability of it fogging or try to wipe the fog from the lens to keep it from building up.


RandySwallows  (D License)

Mar 14, 2013, 7:22 AM
Post #7 of 9 (1061 views)
Shortcut
Re: [PhreeZone] Fisheye lenses in Florida [In reply to] Can't Post

Agreed. If you are taking your lenes from the A/C to the plane, you are asking for fogging under canopy. I can't recall a time, however, that I have experienced this with my Canon 15 2.8 in all of my jumping in Florida.


Premier faulknerwn  (D 17441)
Moderator
Mar 14, 2013, 7:07 PM
Post #8 of 9 (1008 views)
Shortcut
Re: [RandySwallows] Fisheye lenses in Florida [In reply to] Can't Post

This was in lake wales where there was no ac but 80 degree temps on the ground. Tons of white puffy clouds so it was humid. This was one of the 8mm lenses not an expensive canon 15mm however.,.


theonlyski  (D License)

Mar 15, 2013, 5:06 AM
Post #9 of 9 (974 views)
Shortcut
Re: [faulknerwn] Fisheye lenses in Florida [In reply to] Can't Post

It's something we've basically just dealt with while doing videos and pictures.

Generally I don't have much issue with it, but I assembled my gear when it was hot and dry, then gaffer taped the crap out of it where the lens attaches to the camera.

That helps a bit, but still get a small spot some days. If it's really humid, it might be worse, but I don't think it was that bad when you were down here.



Forums : Skydiving Disciplines : Photography and Video

 


Search for (options)