24-105 f4 condensation on rear element?

The outside of the rear element built up some condensation for the first time. I removed the lens and wiped it and put it back. Few mins later, it built up again. Is this normal?

• lens was always connected to my Sony a7 (first gen)
• 5c temperature next to a lake

Sounds like you have some moisture inside the camera, it gets warm in there from operation and humidity from the warm air fogs up the colder rear element. It is better to let it dry out before corrosion starts.

Yes, especially if the camera was kept in a warm environment first then put into a bag before travelling to the lake. That being said, I usually get the opposite problem where when the lens is cold, I take it to a warm environment.

dazzerfong said:

Yes, especially if the camera was kept in a warm environment first then put into a bag before travelling to the lake. That being said, I usually get the opposite problem where when the lens is cold, I take it to a warm environment.

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Another solution is to get a lens warmer, there are a number of brands so do a google search. They can be found at Amazon, B&H etc. Handy to have on travels for rainy/cold destinations when you go between different temperature environments.

Below are just examples, so you need to do research find out which ones are good.















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Keep It Simple

moficera said:

Sounds like you have some moisture inside the camera, it gets warm in there from operation and humidity from the warm air fogs up the colder rear element. It is better to let it dry out before corrosion starts.

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It`d be all over the sensor and in the EVF optics if that was the case ..

Adam-T said:

moficera said:

Sounds like you have some moisture inside the camera, it gets warm in there from operation and humidity from the warm air fogs up the colder rear element. It is better to let it dry out before corrosion starts.

Click to expand...

It`d be all over the sensor and in the EVF optics if that was the case ..

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Why?

What's your suggestion when there is condensation inside the camera?

moficera said:

Adam-T said:

moficera said:

Sounds like you have some moisture inside the camera, it gets warm in there from operation and humidity from the warm air fogs up the colder rear element. It is better to let it dry out before corrosion starts.

Click to expand...

It`d be all over the sensor and in the EVF optics if that was the case ..

Click to expand...

Why?

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Pretty obvious as the damp would evaporate everywhere and the sensor being the largest area would get the lions share , it wouldn`t just cover the rear element of a lens .

moficera said:

What's your suggestion when there is condensation inside the camera?

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I`ve never seen it but I`d leave it to air out in a dry place with the body cap off or even packed in Silica gel bags

Adam-T said:

moficera said:

Adam-T said:

moficera said:

Sounds like you have some moisture inside the camera, it gets warm in there from operation and humidity from the warm air fogs up the colder rear element. It is better to let it dry out before corrosion starts.

Click to expand...

It`d be all over the sensor and in the EVF optics if that was the case ..

Click to expand...

Why?

Click to expand...

Pretty obvious as the damp would evaporate everywhere and the sensor being the largest area would get the lions share , it wouldn`t just cover the rear element of a lens .

Click to expand...

The sensor gets warm during operation, no condensation where it is above the dew point.

Adam-T said:

Adam-T said:

What's your suggestion when there is condensation inside the camera?

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I`ve never seen it but I`d leave it to air out in a dry place with the body cap off or even packed in Silica gel bags

Click to expand...

So you suggest there is no moisture inside the camera because it would show on the sensor and EVF and yet you'd leave it to dry out

Adam-T said:

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** Please ignore the Typos, I'm the world's worst Typist **

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moficera said:

moficera said:

I`ve never seen it but I`d leave it to air out in a dry place with the body cap off or even packed in Silica gel bags

Click to expand...

So you suggest there is no moisture inside the camera because it would show on the sensor and EVF and yet you'd leave it to dry out

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You asked me what i`d do if there was moisture in the camera - I`ve never had that happen . I have had mist on the front and rear elements on a bagged lens and appear on the front when on camera when moving from cold to warm areas or where I am warmed up -

maybe the A7 Orig gets warmer inside the lens mount area during use than later better ventilated IBIS cameras and it`s warming up the cold rear element of the lens causing the issue . I`ve only recently got my Mk1 A7 so not used it in cold conditions so don`t know . never had it with later IBIS models like the A7R-II but they are a lot deeper bodies and the sensor area is ventilated .

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** Please ignore the Typos, I'm the world's worst Typist **

Adam-T said:

Adam-T said:

Adam-T said:

I`ve never seen it but I`d leave it to air out in a dry place with the body cap off or even packed in Silica gel bags

Click to expand...

So you suggest there is no moisture inside the camera because it would show on the sensor and EVF and yet you'd leave it to dry out

Click to expand...

You asked me what i`d do if there was moisture in the camera

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No, I asked about condensation, the obvious answer is it is caused by moisture, but according to your original statement there is no moisture inside the camera cause it would show elsewhere.

moficera said:

Adam-T said:

moficera said:

moficera said:

I`ve never seen it but I`d leave it to air out in a dry place with the body cap off or even packed in Silica gel bags

Click to expand...

So you suggest there is no moisture inside the camera because it would show on the sensor and EVF and yet you'd leave it to dry out

Click to expand...

You asked me what i`d do if there was moisture in the camera

Click to expand...

No, I asked about condensation, the obvious answer is it is caused by moisture, but according to your original statement there is no moisture inside the camera cause it would show elsewhere.

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You said """"What's your suggestion when there is condensation inside the camera? "" so I answered with a suggestion to deal with condensation in the camera which was to leave it to air out in a dry place with the body cap off or even packed in Silica gel bags

Whatever .......... and moisture in the camera would likely show up elsewhere too

Probably isn't any anywhere except in the air , temp changes cause mist on glass elements (how it happens on lenses to begin with , they`re not full of water but air has moisture in it ) , a Mk1 has a sealed sensor chamber and the camera will warm up in that area more than an IBIS model, if the rear element of the lens is still cold, it could cause misting

It`s all theory anyway