Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-06-2014, 03:34 AM   #1
New Member




Join Date: Nov 2014
Posts: 3
Pentax K1000. Line In Viewfinder

Just bought a Pentax K1000 off of Ebay. Everything seems to be working fine, but just today, I noticed a line in the viewfinder... I took off the lens, but it's still there. It looks like a piece of foam or something. Anyone have any idea what the deal is?

Attached Images
 
11-06-2014, 03:55 AM   #2
Pentaxian
LensBeginner's Avatar

Join Date: Sep 2014
Photos: Albums
Posts: 2,593
Which line are you referring to? the vertical one on the left?
You could inspect the mirror and the focusing screen, which are easy things to do.
Just remove the lens and look directly inside (mirror) and then up towards the prism box (focusing screen).
A higher quality picture would help, but I know it's not easy to photograph a viewfinder...

At any rate, if it's still there when you take off the lens, it's a good sign: it means that it won't show up in your pictures!
11-06-2014, 04:03 AM   #3
New Member




Join Date: Nov 2014
Posts: 3
Original Poster
LensBeginner, I'm talking about the horizontal line at the bottom. Is this common in K1000s? Is it going to affect picture quality?
11-06-2014, 04:10 AM   #4
Pentaxian
LensBeginner's Avatar

Join Date: Sep 2014
Photos: Albums
Posts: 2,593
QuoteOriginally posted by Ridgewell Quote
LensBeginner, I'm talking about the horizontal line at the bottom. Is this common in K1000s? Is it going to affect picture quality?
Path of light to the film is gonna be lens->film (when you shoot).
The path to the viewfinder is lens->mirror->focusing screen->pentaprism (or pentamirror)->viewfinder.
If you still see it when you remove the lens then it won't show up in your pictures.
It could be some dirt on either one of the components that I listed before.

So no, it won't affect IQ.

11-06-2014, 04:23 AM   #5
New Member




Join Date: Nov 2014
Posts: 3
Original Poster
QuoteOriginally posted by LensBeginner Quote
Path of light to the film is gonna be lens->film (when you shoot).
The path to the viewfinder is lens->mirror->focusing screen->pentaprism (or pentamirror)->viewfinder.
If you still see it when you remove the lens then it won't show up in your pictures.
It could be some dirt on either one of the components that I listed before.

So no, it won't affect IQ.
Thank you so much! If it won't affect the image, I guess it really doesn't matter. Still bugs me a little bit, but whatever. Thanks again!
11-06-2014, 06:22 AM   #6
Pentaxian
LensBeginner's Avatar

Join Date: Sep 2014
Photos: Albums
Posts: 2,593
QuoteOriginally posted by Ridgewell Quote
Thank you so much! If it won't affect the image, I guess it really doesn't matter. Still bugs me a little bit, but whatever. Thanks again!
You can still try to look where I told you and see if there's something.
My KX has a horizontal black mark on the mirror because the mirror hits a piece of rubber when it flaps (as to avoid breaking), but it doesn't show in the viewfinder.
Maybe yours has a similar mark.
11-06-2014, 06:31 AM   #7
Site Supporter
mattt's Avatar

Join Date: Feb 2011
Location: Niagara
Photos: Gallery | Albums
Posts: 2,805
Looks like foamy residue from the mirror bumper. Very common in old cameras that have not been maintained. A CLA (Clean Lubricate and Adjust) would repair this situation.
11-06-2014, 11:00 AM   #8
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,415
QuoteOriginally posted by mattt Quote
Looks like foamy residue from the mirror bumper. Very common in old cameras that have not been maintained. A CLA (Clean Lubricate and Adjust) would repair this situation.
...or something like that. What do you see when you take the lens off and look into the mirror box? Is there junk on the mirror or focus screen? If so, removal typically requires the services of a camera repair shop. The mirror and focus screen are very delicate and are easily scratched. There is also the risk of knocking the mirror out of alignment. The general rule for both screen and mirror is, "Do Not Touch".

One of the hazards of buying a vintage camera is that the foam materials used for light seals around the film door and as a mirror bumper are prone to disintegrate with age. Often this means a gooey sticky black mess that can foul the mirror and/or the focus screen. There is also the risk of the fragments being flung onto the shutter curtains. While often impractical, it is good to check the condition of the foam before shooting with the camera. This is done be touching the foam with a toothpick or similar sliver of wood. If the foam is sticky, crumbly or anything other than springy, it should be replaced. If the mirror and screen have not been fouled, replacement may be done as a do-it-yourself project using a kit such as that offered by Jon Goodman.


Steve

11-06-2014, 03:29 PM   #9
Senior Member




Join Date: Aug 2012
Location: Overland Park, KS via North Carolina
Photos: Gallery | Albums
Posts: 174
Another concern is that the foam provides a light seal when the mirror flips up out of the way. This keeps light from the view finder from entering and fogging the film.


I had my K1000 serviced for the same problem several years back and if the foam isn't flaking off and getting into the shutter area it should be a relatively inexpensive repair.
11-06-2014, 04:04 PM   #10
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,415
QuoteOriginally posted by OldPentaxFan Quote
I had my K1000 serviced for the same problem several years back and if the foam isn't flaking off and getting into the shutter area it should be a relatively inexpensive repair.
The cost is generally $45+ as part of a minimal CLA (Clean, Lube, Adjust). If the mirror were not already fouled the job can be done at home at a cost of less than $15 ($10 for the kit and $5 for the lighter fluid to clean off the old seals).


Steve
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, k1000, line, pentax, pentax help, photography, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Line on 645Z Viewfinder jonojono Pentax Medium Format 4 07-22-2014 01:12 PM
Abstract 1st in line Canis Photo Critique 7 02-27-2014 01:04 PM
Pentax K1000 viewfinder hazy Carol Sharp Visitors' Center 7 02-11-2014 09:45 PM
K1000 - Mold inside the Viewfinder brosen Pentax K-5 5 10-31-2011 02:35 PM
K1000 Viewfinder Diopter k0og Pentax Film SLR Discussion 10 04-22-2009 07:34 AM



All times are GMT -7. The time now is 06:24 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