canon 500mmf4ii foggy pictures

[radefoto]

Hi Guys, i live in UK very wet country and from about year my lovely lens getting some issues ,i get foggy pictures, sometimes front element sometimes rear or filter element got condensation ,is there anything i can do about it ,is this is normal ?

 

[Loswr]

Hi Guys, i live in UK very wet country and from about year my lovely lens getting some issues ,i get foggy pictures, sometimes front element sometimes rear or filter element got condensation ,is there anything i can do about it ,is this is normal ?

Where is the condensation – on the outer surface of the elements or inside the lens? If the former, wipe the surface with a lens cloth. If the latter (which I assume is the case), that can happen with rapid temperature/humidity changes.

https://www.adorama.com/alc/avoid-foggy-camera-lens/

 

[Sporgon]

If the lens were mine I’d seal it in a plastic bag stuffed full of silica gel sachets.

 

[Click]

If the lens were mine I’d seal it in a plastic bag stuffed full of silica gel sachets.

+1

 

[Maximilian]

Hi @radefoto!
And welcome to canonrumors.
To avoid condensation, the lens shouldn't be colder than the surrounding air.
So if you've been outside in the cold and bring it back inside, put it into a camera bag or cover it with a blanket so that there is just a little amount of warm (and humid) air surrounding it.
Of course, this will increase the time to warm it up again, but it'll also avoid internal condensation that is quite difficult to get out again.

If the lens were mine I’d seal it in a plastic bag stuffed full of silica gel sachets.

In principle that should work, but...
Any kind of lubrication and greasing stuff inside the lens also contains some amount of water.
You will dry that out as well, and the lubricant might not work properly any more.
So don't leave it too long inside the bag. edit: I stand corrected.

 

[AlanF]

Hi @radefoto!
And welcome to canonrumors.
To avoid condensation, the lens shouldn't be colder than the surrounding air.
So if you've been outside in the cold and bring it back inside, but it into a camera bag or cover it with a blanket so that here is just a little amount of warm air surrounding it.
Of course, this will increase the time to warm it up again, but it'll also avoid internal condensation that is quite difficult to get out again.


In principle that should work, but...
Any kind of lubrication and greasing stuff inside the lens also contains some amount of water.
You will dry that out as well, and the lubricant might not work properly any more.
So don't leave it too long inside the bag.

Unless you know more than me, I think it’s the other way round - lubricating oils and greases should be kept dry.

 

[Maximilian]

Unless you know more than me, I think it’s the other way round - lubricating oils and greases should be kept dry.

You are right. I was wrong and confused "water separation" with "oil separation".
But that's not relevant with silica gel, AFAIK.
So I corrected my post.