Photography

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A place to politely discuss the tools, technique and culture of photography.

This is not a good place to simply share cool photos/videos or promote your own work and projects, but rather a place to discuss photography as an art and post things that would be of interest to other photographers.

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Weather sealed zoom lenses with non static rear lens element, how do they maintain airflow? (alien.top)

submitted 11 months ago by velichappaad@alien.top to c/photography@viewfinder.pro

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Say Nikon Z 24-70 f 2.8. It has a lens element near the mount which moves as we zoom. This means, air will be pumped into the camera. How will the air exit?

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[–] another_awkward_brit@alien.top 1 points 11 months ago

Weather sealed ≠ airtight.

[–] shig@alien.top 1 points 11 months ago (1 children)

Check out this video, they explain how air can move into and out of an externally zooming lens with weather sealing at 10:30:

https://youtu.be/bCdi0m1fe9U

[–] ItsMeAubey@alien.top 1 points 11 months ago

This is a really cool breakdown

[–] therealdjred@alien.top 1 points 11 months ago

Air can move internally in a lens. Moving the lens doesnt change the air volume inside the lens, as it was already in there. With that said lenses arent air tight.