Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-17-2011, 04:02 PM   #1
Senior Member




Join Date: Jul 2011
Location: Tokyo
Posts: 115
How bad is to change lens while K5's power is on

hey guys im keep forgetting to switch off the K5 while changing lens.so wondering is this bad for the camera/lens

thanks

07-17-2011, 04:16 PM   #2
Veteran Member
Smeggypants's Avatar

Join Date: Sep 2010
Posts: 1,536
I do it all the time. Never had a problem
07-17-2011, 04:19 PM   #3
Veteran Member
mysticcowboy's Avatar

Join Date: Apr 2009
Location: port townsend, wa
Photos: Albums
Posts: 968
Yes. Most of the time there will be no problem. However, you are removing an electrically hot connection between the lens and camera. That increases the possibility of a voltage spike across the contacts. The spike is probably small but the potential for damage is real. It's somewhat similar to removing an external drive from your computer without first ejecting it. Generally you will be fine, but I have fried a memory card doing that.
07-17-2011, 05:42 PM   #4
Veteran Member




Join Date: Jun 2007
Location: Buffalo/Rochester, NY
Photos: Albums
Posts: 1,133
I too have done it hundreds of times with my K10/K20/K5. Highly unlikely I would shut off the camera in the middle of a shoot.

As to damaging a memory card by removing lenses, that would be one heck of a path for a surge to travel. I'd think a voltage regulator/surge protection mechanism of some kind would protect from such a thing, particularly considering it's possible to zap the body on a very dry day, particularly when swapping lenses or replacing cards.

07-17-2011, 05:49 PM   #5
Pentaxian
twitch's Avatar

Join Date: Nov 2009
Posts: 4,571
I try to remember to switch off the body before changing lenses, but in practice I've probably forgotten to do so at least a hundred times and have never had a problem.
07-17-2011, 07:06 PM   #6
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,438
A charged sensor may attract dust, but I doubt it will physically harm the camera.
07-17-2011, 08:34 PM   #7
Pentaxian
Bob from Aus's Avatar

Join Date: Jul 2011
Location: Australia
Photos: Gallery
Posts: 1,080
I have only heard about it attracting dust. On that score I am surprised how well the dust cleaning works in both my K7 and K5 compared with the K10 and 20. I keep forgetting to turn off, but I am not having a dust problem either K7 or 5.
07-17-2011, 11:36 PM   #8
Veteran Member
jeztastic's Avatar

Join Date: Nov 2010
Location: Canterbury
Photos: Gallery | Albums
Posts: 596
If you have a non-chipped lens the SR system may be set to the wrong focal length... But not too sure how big a difference that will make...

07-17-2011, 11:40 PM   #9
Inactive Account




Join Date: Jun 2007
Location: Melbourne, australia
Posts: 26
Through the K10, k20,k7 and k5 I almost never switch the camera off. I shoot mostly with primes, so I change lenses A LOT, and have never had any problem.

However with old non -A lenses, it's quicker to turn off and on to register the FL for SR than to do it thru the menu system.
07-18-2011, 12:08 AM   #10
Veteran Member
philippe's Avatar

Join Date: Apr 2008
Location: Flanders Fields
Posts: 463
It never occurred to me that this might cause a problem.
Perhaps the attraction of dust, but the shutter is closed or closes when the lens release button is pushed and the lens rotated and thus electronically disconnected.
I wouldn't be surprised if the electronic communication between lens and camera should somehow be neutralized when the lens release button is pressed. But this I do not know for sure.
I have full confidence in the Japanese engineers, they are smart enough...
07-18-2011, 03:20 AM   #11
Veteran Member




Join Date: Nov 2006
Location: Norway
Photos: Gallery
Posts: 385
I noticed that my K-7 only read lens id at power-on so changing lenses without turning it off resulted in errors in the exif and wrong sensor stabilization.

I have not tested this on a K-5, but I always turn off my camera before changing lenses.
07-18-2011, 07:15 AM   #12
Veteran Member
fccwpe's Avatar

Join Date: Mar 2009
Location: Perris, CA
Photos: Gallery
Posts: 380
I fried a Sigma 150-500mm doing that. Luckily it was under warranty.
07-18-2011, 08:27 AM   #13
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,957
I really worry the most about SDM lenses with it.
07-18-2011, 08:44 AM   #14
Veteran Member




Join Date: Sep 2010
Location: Canberra
Photos: Gallery | Albums
Posts: 739
Reading the manual (gasp! I Know ) for my new Sigma 18-50 that has OS (and HSM) it makes it a point to state NEVER (their emphasis, not mine) remove the lens with the body powered on when OS may be active.

Older lenses though shouldn't be a problem compared to something powered from the body i'd imagine ?
07-18-2011, 08:59 AM   #15
Senior Member
geezer52's Avatar

Join Date: Jul 2009
Location: High Desert, California
Photos: Gallery
Posts: 231
I've done it (forgot) and had no problem yet, but I wouldn't call it a good idea. After having done it I then still cycle power after the fact to ensure the camera recognizes then lens properly and also to trip the dust shaker. I find it useful to clean the contacts on both the camera and the lens periodically
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, k-5, k-5 ii, k-5 iis, k5, pentax k-5
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Power Zoom Lens on a K-x Alizarine Pentax SLR Lens Discussion 10 07-16-2013 09:19 AM
Is K5's stain repair-able? hc98dcyl Pentax K-5 26 09-06-2011 07:21 AM
Anyone encounter problem with K5's rear command wheel? aaronius Pentax K-5 14 06-12-2011 06:01 PM
Power Zoom lens on a K10d HeavyD Pentax SLR Lens Discussion 4 07-20-2009 03:49 PM
Tamron Adaptall... Bad lens or bad adapter Okami Pentax SLR Lens Discussion 6 05-01-2008 06:52 PM



All times are GMT -7. The time now is 02:36 PM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top