Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-22-2014, 07:02 PM   #1
New Member




Join Date: Feb 2014
Posts: 2
I need help. Something got into the lens.

Hi there.
I'm new, not only here but also with DSLR as well so please be patient.

I own a K-30 with a 18-135mm WR lens. And since both the body and lens are said to be weather resist I took them out last week to shoot some photos at a ski field. It was not even snowing or anything but still some snow might have got to the camera as I was in a very playful mood.

Then the next thing I noticed is that something must have got into the lens, as you can see in these photos.





Two photos above were taken in 2 different days, and as you may have noticed, the positions of that (?) thing changed.

I don't know what and how because the lens' surface looks perfectly clean to me, no scratches or anything. And it's not the problem with the body either as when I tried taking photos with another lens the photos came out just fine. If it's really water I will be very disappointed..

So any help with indicating what's wrong with the lens, and any suggestion on how I should do, would be appreciated very much.

Thank you all so much in advance!

02-22-2014, 07:17 PM - 1 Like   #2
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,284
The junk you have circled is probably on the sensor.* The position of the stuff did not change, only the camera orientation. There is a protocol (see your user manual) to raise the mirror and open the shutter so that you can blow it off with a rubber bulb blower. While you are puffing the sensor, you can puff the rear surface of the lens just to be complete.


Steve

* Dust inside the lens is generally not visible as a discrete spot and even junk on the sensor is not always visible at all apertures.

Last edited by stevebrot; 02-22-2014 at 07:31 PM.
02-22-2014, 07:27 PM - 1 Like   #3
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 42,836
That's dust and hair on your sensor. Get a simple blower like the rocket blower, blow it off, and you should be good. Also, be sure the in-camera sensor cleaning option is turned on at startup.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

02-22-2014, 08:54 PM - 1 Like   #4
Veteran Member
oxidized's Avatar

Join Date: Dec 2009
Location: USA - Delaware
Photos: Albums
Posts: 434
yup. these are def on your sensor and not the lens.

02-22-2014, 09:43 PM   #5
New Member




Join Date: Feb 2014
Posts: 2
Original Poster
^ Thank you all so much for your help. I will try doing as you suggested.

But if it's the sensor why when I tried another lens the junk didn't appeared? Just wondering...
02-22-2014, 10:03 PM - 1 Like   #6
Site Supporter




Join Date: Oct 2010
Location: Melbourne
Photos: Gallery
Posts: 2,887
I bet my bottom dollar, it is dust on the sensor, easily removed.

No, do not blow the rear end of a zoom lens. Zoom lenses have gaps where the barrels move in and out and the chance of you blowing dust into the lens barrel is pretty certain.

Just use a soft brush or lint free cloth (your friendly spectacle shop owner will give you one) and brush/wipe off any dust. Much safer then blowing particularly since the rear of a lens is pretty accessible.

But certainly give the rear lens cap a good blow (even with your lungs) before putting it on to the lens for storage. The caps are plastic and and easily build up a static charge which will attract dust. (Pocket lint)

Prime lenses are not so critical as far as blowing the rear part is concerned.

Greetings
02-23-2014, 12:26 AM   #7
Loyal Site Supporter




Join Date: Jun 2009
Location: Tumbleweed, Arizona
Photos: Gallery | Albums
Posts: 5,102
QuoteOriginally posted by lesshair Quote
^ Thank you all so much for your help. I will try doing as you suggested.

But if it's the sensor why when I tried another lens the junk didn't appeared? Just wondering...
The appearance of the dust and stuff on the sensor tends to be more noticiable against light backgrounds and at small apertures (f22). I would try the other lens again at f22, at infinity and aim it up at the sky - then see what turns out. I am betting you will get a similar view.

02-23-2014, 06:11 AM   #8
Site Supporter




Join Date: May 2012
Location: Adelaide
Photos: Gallery | Albums
Posts: 1,104
Yes, aperture makes all the difference to degree gunk on the sensor appears in the image. What is hardly noticeable at F2.8 or F4 can be an abomination at F11 or F16. Some scenes also want to emphasis sensor gunk.

Be very careful when using the blower that its tip does not touch the sensor surface. Also, sometimes a blower will not be able to shift the dust spots (or in my case recently I turned a couple of spots into many, many spots, grrrrr!). In that case, find a decent nearby camera shop that offers a sensor screening service. Do not muck about attempting to touch the surface of the sensor yourself unless you are quite confident you know what you are doing. Make a mistake and the camera will be ruined.

02-23-2014, 06:38 AM   #9
Loyal Site Supporter




Join Date: Nov 2013
Location: Alabama
Posts: 2,450
Yeah, don't touch the sensor. They sell wet cleaning swabs for sensors. They may not be a good idea if you are not careful & conscientious in what you do.
02-23-2014, 09:10 AM   #10
Pentaxian
Oldbayrunner's Avatar

Join Date: Mar 2013
Location: Havre de Grace, MD
Posts: 1,234
After you get it cleaned off turn on Dust Removal in your menu... That can help but it doesn't stop it from happening completely.
02-23-2014, 06:06 PM   #11
Pentaxian
Transit's Avatar

Join Date: Aug 2007
Location: Whanganui NZ
Photos: Gallery | Albums
Posts: 4,036
Bulb blowers are good but worth checking for insects before use
This little sucker took numerous scrubbings to remove

02-23-2014, 06:51 PM   #12
Loyal Site Supporter




Join Date: Nov 2013
Location: Alabama
Posts: 2,450
QuoteOriginally posted by Transit Quote
Bulb blowers are good but worth checking for insects before use
This little sucker took numerous scrubbings to remove
Aww! Poor guy.
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!
body, help, lens, pentax help, photos
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
I love them all but need to thin the lens herd...help kraigg007 Pentax SLR Lens Discussion 48 01-27-2014 06:08 AM
Which lens do I need? Please help! CharisVega Pentax SLR Lens Discussion 13 01-08-2014 06:50 PM
Just got my k5 and I need help Mtnberner Pentax K-5 16 10-24-2012 03:48 PM
Need help ASAP!!! I've got 16hrs HoBykoYan Pentax SLR Lens Discussion 28 10-09-2012 02:29 AM
So I need some help...I just got a sunpak 383 for my K10D. triplej96 Photographic Technique 6 05-06-2008 04:39 PM



All times are GMT -7. The time now is 03:35 AM. | See also: NikonForums.com, CanonForums.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