Pentax k3 air felt through the viewfinder when zooming...

TheDude1363 · 12-17-2014, 07:32 PM

Hello, I recently bought a K3 with the kit lens 18-135mm. Now I've noticed air rushing through the viewfinder when zooming, the faster the zoom the more audible the air is. Is this normal or do I have a seal issue? Further more when I open other ports ie. headjack port the air seem to redirect though the open port. Thank you... bare with me I'm a newbie to Pentax...

Adam · 12-17-2014, 07:48 PM

It's normal for a weather sealed camera/lens combo, since the air has got to escape somewhere as you zoom

After a little bit of use (due to wear), the air should start escaping through the lens instead, so you won't feel it.

drypenn · 12-17-2014, 07:48 PM

That should be normal.

As you zoom in and out, you'll have to suck and displace air. The air has to go in and out somewhere.

-edit-

Adam beats me to it.

TheDude1363 · 12-17-2014, 08:05 PM

Adam & Drypenn, thank you...
though should I be concerned about moisture/water, dust, getting into the camera through the viewfinder?

drypenn · 12-17-2014, 08:07 PM

Originally posted by TheDude1363

Adam & Drypenn, thank you...
though should I be concerned about moisture/water, dust, getting into the camera through the viewfinder?

No.

Still, it's prudent to avoid water and shelter it from rain.

As to dust, don't worry, it will always find its way inside

no matter what you do. Set your dust removal system every time you switch on your camera or every time you change lens. It should help.

rawr · 12-17-2014, 08:22 PM

Originally posted by TheDude1363

though should I be concerned about moisture/water, dust, getting into the camera through the viewfinder?

Just be aware of the air issue when in dusty/wet etc conditions, and don't do a lot of quick zooming in and out. Zoom slow.

If you shoot primes, by the way, there is nothing like the same push-pull of air, hence no issue.

FYI, other camera makers who offer weather resistant bodies and weather resistant zooms have to deal with the same issue. Fujifilm deals with it, for example, by having a valve or 'ventilator' arrangement at the base of their XF 18-135 F3.5-5.6 R LM OIS WR zoom to help the lens 'breath'.

TheDude1363 · 12-17-2014, 08:27 PM

Thank you guy's, I can sleep better knowing that lol... cheers

noelpolar · 12-18-2014, 06:18 AM

mmm.....camera flatulence ....... every body has it......

TheDude1363 · 12-18-2014, 10:41 AM

Nicely played.....

12-17-2014, 07:32 PM	#1
TheDude1363 New Member Join Date: Dec 2014 Posts: 13	Pentax k3 air felt through the viewfinder when zooming... Hello, I recently bought a K3 with the kit lens 18-135mm. Now I've noticed air rushing through the viewfinder when zooming, the faster the zoom the more audible the air is. Is this normal or do I have a seal issue? Further more when I open other ports ie. headjack port the air seem to redirect though the open port. Thank you... bare with me I'm a newbie to Pentax...

12-17-2014, 07:48 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,593	It's normal for a weather sealed camera/lens combo, since the air has got to escape somewhere as you zoom After a little bit of use (due to wear), the air should start escaping through the lens instead, so you won't feel it. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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12-17-2014, 07:48 PM	#3
drypenn Veteran Member Join Date: Nov 2012 Photos: Albums Posts: 963	That should be normal. As you zoom in and out, you'll have to suck and displace air. The air has to go in and out somewhere. -edit- Adam beats me to it.

12-17-2014, 08:05 PM	#4
TheDude1363 New Member Join Date: Dec 2014 Posts: 13 Original Poster	Adam & Drypenn, thank you... though should I be concerned about moisture/water, dust, getting into the camera through the viewfinder?

12-17-2014, 08:07 PM	#5
drypenn Veteran Member Join Date: Nov 2012 Photos: Albums Posts: 963	Originally posted by TheDude1363 Adam & Drypenn, thank you... though should I be concerned about moisture/water, dust, getting into the camera through the viewfinder? No. Still, it's prudent to avoid water and shelter it from rain. As to dust, don't worry, it will always find its way inside no matter what you do. Set your dust removal system every time you switch on your camera or every time you change lens. It should help.

12-17-2014, 08:22 PM	#6
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by TheDude1363 though should I be concerned about moisture/water, dust, getting into the camera through the viewfinder? Just be aware of the air issue when in dusty/wet etc conditions, and don't do a lot of quick zooming in and out. Zoom slow. If you shoot primes, by the way, there is nothing like the same push-pull of air, hence no issue. FYI, other camera makers who offer weather resistant bodies and weather resistant zooms have to deal with the same issue. Fujifilm deals with it, for example, by having a valve or 'ventilator' arrangement at the base of their XF 18-135 F3.5-5.6 R LM OIS WR zoom to help the lens 'breath'.

12-17-2014, 08:27 PM	#7
TheDude1363 New Member Join Date: Dec 2014 Posts: 13 Original Poster	Thank you guy's, I can sleep better knowing that lol... cheers

12-18-2014, 06:18 AM	#8
noelpolar Veteran Member Join Date: Oct 2013 Location: Goolwa, SA Photos: Gallery Posts: 4,310	mmm.....camera flatulence ....... every body has it......

12-18-2014, 10:41 AM	#9
TheDude1363 New Member Join Date: Dec 2014 Posts: 13 Original Poster	Nicely played.....

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