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Forum: Pentax K-1 & K-1 II 05-15-2019, 01:51 PM  
Weather resistance of wr ff/fa lenses on the k-1
Posted By RKKS08
Replies: 24
Views: 2,256
30 years ago, I owned a rather expensive Swiss wrist watch, "waterproof". A specialized shop told me, that wp could not be guaranteed any more if they (or I) would change the battery. To keep wp for sure, with every opening of the case all sealings would have to replaced by ORIGINAL ONES (no 3rd party, no 10 year old stock). If I wanted to be sure to keep wp, battery change would have to be done by the factory. Which I did; it was not so expensive and wp guarantee was prolonged, but it took 3 weeks.
I think opening a DSLR case will also afford to replace entangled seals.

"Water (weather) resistant" cameras are not designed the same as "waterproof" equipment (where outside pressure automatically tightens the pressure on the seals, instead of deminishing it).

Seals are degrading over time.
I wonder whether it was tested how many lens changes are possible till the camera side seals of the lens will start to fail. Certainly not infinite. I also suspect that any scratches (or robust dirt, even if tiny) on the camera mount may shorten the life of the lens seals, if not even decrease the wr properties directly.
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