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08-05-2016, 08:59 PM   #1
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Weather-sealing and the Pentax 645z

Please pardon my ignorance. How well is the Pentax 645z weather-sealed? I.e., how much should I worry about rain, sea-spray, atmospheric humidity etc. when using a 645z?

08-05-2016, 09:05 PM   #2
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It's pretty resilient. Prolonged light to medium rain shouldn't be a problem, and all the lenses are AW, which is the highest level of weather sealing Pentax offers. It also protects against dust and sand.

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08-06-2016, 01:49 AM   #3
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That's all the modern lenses, that is, of course.
08-06-2016, 03:01 AM   #4
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QuoteOriginally posted by Gurdur Quote
Please pardon my ignorance. How well is the Pentax 645z weather-sealed? I.e., how much should I worry about rain, sea-spray, atmospheric humidity etc. when using a 645z?

Good enough?

08-06-2016, 05:26 AM   #5
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I have used the 645z in pouring rain (and I mean pouring rain, not drizzle) on several occasions with the 28-45mm, 55mm, and 90mm (weather sealed lenses). I have also used it in super humid conditions (100% humidity in Guangzhou, China), and can't say I had any issues.

The first time I used the camera in the rain I was a bit nervous, so when I got back to the hotel room I quickly had a look at the camera to see if water had got inside. Not a drop.

If weather sealing is your main concern before you purchase the Z, then worry no more.
08-06-2016, 10:21 AM   #6
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Likewise, I've used both the 645D and 645Z in torrential downpours with no problems.
08-06-2016, 10:25 AM   #7
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I haven't used the Z but my 645D holds up beautifully in the pouring west coast rain
08-06-2016, 10:31 AM   #8
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I have shot my 645Z and 645D's for years in all kinds of weather conditions, with old and new lenses. Pouring rain, high humidity, high heat, super cold, strong wind (with dust and/or rain), etc. I've never had any weather related issues. I do wrap the camera body and some of the older lenses in some rain protection when needed, and I don't leave any of the rubber gaskets open (e.g. the remote cable socket cover) in a lot of rain. One of the best forms of weather sealing is simply not being reckless.

08-07-2016, 09:33 PM   #9
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08-08-2016, 06:12 AM   #10
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Egads, that's pushing it!

Once I feel asleep and left my k3 outside during an star trail session. Woke up in the morning and it was coated in a thick, moist dew. I freaked out for a bit, but it was 100% fine.
08-10-2016, 11:05 AM   #11
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Mine experienced sea spray ( in fact a bit more than this : big waves crashing on the shore where I was trying night photography), enough to be completely soaked. I passed it under clear water in my bathroom after, and it is still working flawlessly !! Cold has never been a problem (except liquid crystals not so liquid anymore after more than one hour at -25 C)

Last edited by SylvainB; 08-10-2016 at 11:07 AM. Reason: Corrections
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