Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-06-2011, 01:52 PM   #1
Junior Member
rachcobb's Avatar

Join Date: Dec 2010
Location: Alabama
Photos: Gallery | Albums
Posts: 48
Things that make me go "Huh?"

I have a K-x, on my kit 18-55 I have noticed a black smudge/spot/something not there before when looking thru the viewfinder. The spot is not there with any of my other lenses and not on any of the pictures. What is this anybody know? Do I need to learn to ignore it or is there a way to get rid of the black mark? I assume it's in the lens since I don't see it with any of the others attached to my body.

04-06-2011, 02:43 PM   #2
Veteran Member
BlueBubbleBoy's Avatar

Join Date: Mar 2010
Location: Alabama
Photos: Gallery | Albums
Posts: 642
I'd check first to make sure it's not dust on your sensor, which is a pretty common occurrence. Sometimes the spots only show up with a certain lens because of what you are shooting. For example, it may show up on your 18-55 because your doing wide angle shots with a lot of sky, and dust spots show up well with a bright sky with little clouds, as opposed to shooting a telephoto and not having that consistent blue sky.

Starting on page 285 in the K-x manual it shows how to detect and remove dust from the sensor. I reference the book because it will explain it a lot better than I would. If there is dust on the sensor and the sensor shake does not remove it, try using a rocket blower. That will do the trick and it shows in the book how to do it. Here's a link to a blower that I use and am happy with.
Amazon.com: Giottos AA1900 Rocket Air Blaster Large (Black): Camera & Photo

If that doesn't fix the problem, can you see any dust spots or smudges on the front or back of the lens? There are things you can use to clean the lens as well, but maybe start with the sensor and go from there.
04-06-2011, 02:45 PM   #3
Loyal Site Supporter
blackcloudbrew's Avatar

Join Date: Mar 2009
Location: Cotati, California USA
Photos: Gallery | Albums
Posts: 3,816
Do you have a lens cleaning kit? Sounds like you have need of it. If you do, use it. If not, get one and use it.

Dust and dirt happens on the glass, mirror and view finder planes. If after a good cleaning the spot is still there, I think it would be in the lens at that point which is a very different problem.

Hopefully that will resolve this.
04-06-2011, 03:31 PM   #4
Site Supporter
GeneV's Avatar

Join Date: Oct 2008
Location: Albuquerque NM
Photos: Albums
Posts: 9,775
QuoteOriginally posted by BlueBubbleBoy Quote
I'd check first to make sure it's not dust on your sensor, which is a pretty common occurrence. Sometimes the spots only show up with a certain lens because of what you are shooting. For example, it may show up on your 18-55 because your doing wide angle shots with a lot of sky, and dust spots show up well with a bright sky with little clouds, as opposed to shooting a telephoto and not having that consistent blue sky.

Starting on page 285 in the K-x manual it shows how to detect and remove dust from the sensor. I reference the book because it will explain it a lot better than I would. If there is dust on the sensor and the sensor shake does not remove it, try using a rocket blower. That will do the trick and it shows in the book how to do it. Here's a link to a blower that I use and am happy with.
Amazon.com: Giottos AA1900 Rocket Air Blaster Large (Black): Camera & Photo

If that doesn't fix the problem, can you see any dust spots or smudges on the front or back of the lens? There are things you can use to clean the lens as well, but maybe start with the sensor and go from there.
It is always a good idea to pay attention to the cleanliness of the sensor, but since the OP says he sees the smudge through the viewfinder and not in the photos, it can't be the sensor.

04-06-2011, 03:32 PM   #5
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
Any spots you see in the viewfinder are on the focusing screen.
Sorry, but if you see a spot in the viewfinder with one lens mounted, it will also be there with any other lens (or even no lens) mounted.
04-06-2011, 03:56 PM   #6
Veteran Member
BlueBubbleBoy's Avatar

Join Date: Mar 2010
Location: Alabama
Photos: Gallery | Albums
Posts: 642
QuoteOriginally posted by GeneV Quote
It is always a good idea to pay attention to the cleanliness of the sensor, but since the OP says he sees the smudge through the viewfinder and not in the photos, it can't be the sensor.
Perhaps I misunderstood then. I read it as if she was not seeing them in the viewfinder. At any rate, keeping the sensor clean is always a good idea!
04-06-2011, 05:37 PM   #7
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 4,863
It should be emphasized that the focusing screen is easily damaged by cleaning techniques that are harmless for other surfaces. If you think it's dust on the focusing screen, try using a blower. Then try ignoring it. Definitely don't use any chemicals or touch the screen with anything except a soft cloth.
04-07-2011, 07:01 AM   #8
Junior Member
rachcobb's Avatar

Join Date: Dec 2010
Location: Alabama
Photos: Gallery | Albums
Posts: 48
Original Poster
The only time I see the spot is while looking thru the view finder with just that one lens attached. Nothing is showing up in pictures or with any other lens attached or when I review the pictures on the screen. The first this I tried was cleaning the lens itself and then ran the sensor shake on the camera. It sounds like I may just have to ignore it, especially since that's not my favorite lens to use anyway. I am going to take it in this weekend to a local shop and see if there is anything they can do. Thanks Y'all!

04-07-2011, 08:04 AM   #9
Senior Member




Join Date: Jul 2010
Location: Va
Photos: Albums
Posts: 119
I had this same issue to a degree:

https://www.pentaxforums.com/forums/pentax-dslr-discussion/110898-hair-viewfinder.html

The general consensus is if it does not affect the picture dont worry about it.

However within the last few days I took a small "blower" to my camera and it cleared up some stuff to include moving the hair a little......

Im going to be wet washing my sensor here once the items arrive. I figure once a year at the least for a cleaning if not more as needed, prior to that I will give it a good blowing.
04-07-2011, 09:40 AM   #10
Inactive Account




Join Date: Aug 2008
Location: Michigan, USA
Photos: Gallery | Albums
Posts: 7,484
QuoteOriginally posted by rachcobb Quote
The only time I see the spot is while looking thru the view finder with just that one lens attached. Nothing is showing up in pictures or with any other lens attached or when I review the pictures on the screen. The first this I tried was cleaning the lens itself and then ran the sensor shake on the camera. It sounds like I may just have to ignore it, especially since that's not my favorite lens to use anyway. I am going to take it in this weekend to a local shop and see if there is anything they can do. Thanks Y'all!
What do you see when you look through the lens with it off of the camera? I would be quite surprised if you could see dust in the lens, through the viewfinder. Is the spot defined or is it blurry?

04-08-2011, 10:12 AM   #11
Junior Member
rachcobb's Avatar

Join Date: Dec 2010
Location: Alabama
Photos: Gallery | Albums
Posts: 48
Original Poster
QuoteOriginally posted by JeffJS Quote
What do you see when you look through the lens with it off of the camera? I would be quite surprised if you could see dust in the lens, through the viewfinder. Is the spot defined or is it blurry?

I haven't looked thru just the lens, maybe I should try that....

The spot is very defined but solid black.
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, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
When things go wrong ... "old" is not so funny after all. jpzk General Talk 7 01-14-2011 01:03 PM
US News: "20 Things You Should Never Buy Used" dadipentak Photographic Technique 23 06-15-2010 04:21 PM
moderator - pls make a thread about "new K-x has something loose/noise/etc." sticky? yuwlyuwl Troubleshooting and Beginner Help 7 03-09-2010 04:44 AM
K-x - "make it or break it" for Pentax gubak Pentax DSLR Discussion 75 09-22-2009 10:31 AM
Exposure "to the right", does it make sense? bymy141 Photographic Technique 50 06-15-2009 07:34 AM



All times are GMT -7. The time now is 01:55 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