Artiface through D50's viewfinder?

09/09/2006 03:23:27 AM · #1

Hi guys,

Woke up today and found this strange line through half of my
viewfinder. It remained there after I switched different lenses
and was only there when it was switched ON. Any ideas? don't look
like Dust to me.

Nikon AF Nikkor 50mm f/1.8D

09/09/2006 03:23:56 AM · #2

took a few shots..can't seem to see anything..high ISO, Low ISO..nothing..

David.C

09/09/2006 03:43:11 AM · #3

Take a picture of something white at the smallest aperture (biggest number) to make sure as much as possible is in focus. Then in Photoshop (or similar) do an auto-levels and auto-contrast.

If you can't see it then, it is likely not in the lens. It can't be on the sensor if you can see it thru the viewfinder (mirror in the way). However, it could be in the viewfinder itself, on the focusing screen or on the mirror.

The bottom of the focusing screen and the mirror are easily checked by removing the lens (without locking up the mirror) and looking around in there.

David

darnok

Nikon D850

Nikon AF-S Nikkor 16-35 f/4 ED VR

09/09/2006 03:50:16 AM · #4

You need to link to the full URL of the picture.

Something so small on the lens that you can't see it won't show up on your photos. If their is something on your sensor you will see it in the photo and not in the viewfinder. I would say you have something on the ground glass in the viewfinder, maybe a hair. Try to blow it out.

Nikon AF Nikkor 50mm f/1.8D

09/09/2006 03:54:34 AM · #5

but Ive switched lenses and its at the exact same spot?

David.C

09/09/2006 04:07:09 AM · #6

Originally posted by juliuscky:

but Ive switched lenses and its at the exact same spot?

The ground glass Raziel spoke of is the focusing screen. It is the exact distance, albeit a reflected distance, as the sensor. It is ground to give the light something to hit instead of just traveling on thru. It's called a focusing screen because when the image projected on this glass is in focus, the image on the sensor (when the mirror moves out of the way) will also be in focus.

If you take the lens off and look in, you will see a mirror angled slightly up. This is the mirror that reflects the light traveling thru the lens up to the focusing screen. Check the mirror for any stray objects (dirt, hair, etc). Then look above it to see the ground glass (looks kind of cloudy) -- as said, this is the focusing screen. Look this over to see if anything is on it.

If it's not on either of those two places, it could be on the other side of the focusing screen. On the other side there is another mirror that reflects your sight when looking thru the viewfinder, so you can see the focusing screen. It could be either on the viewfinder itself, the mirror or the back of the focusing screen. Unfortunately, I don't believe there is an easy way to get to it if it is. :(

David

ShutterPug

Canon EOS-6D

Canon EF 24-105mm f/4.0L IS

09/09/2006 04:22:08 AM · #7

I had some spots show up on my viewfinder even after cleaing the sensor - and the images were also clean. It was on the mirror itself. One good mirror cleaning and the spots are all gone.

Azrifel

Fujifilm X100 VI

09/09/2006 04:48:07 AM · #8

Originally posted by juliuscky:

I have the exact same line in my D70 viewfinder and like yours it is only visible when the camera is turned on. No idea what it is.

hsolakidis

Nikon AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED

09/09/2006 04:57:43 AM · #9

My D50 has this too. Normal....

Don't worry too much about it....

Nikon AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED

09/09/2006 05:31:29 AM · #10

Thanks for the reply quys, not that I know wht it is, at least it ain't affecting the pics.

Julius

nicoledb

Nikon D70s

09/09/2006 05:36:34 AM · #11

My D70s has it too, it's normal. It's part of the lines in the viewfinder indicating which focus area is being used, I guess these lines have to be electrically powered somehow which is being done through this line. It doesn't show up in the final images in any way.

09/09/2006 05:44:09 AM · #12

You're correct! the lines change when I change points of focus.
Thanks!!

Apple iPhone 5

09/09/2006 10:29:47 AM · #13

Originally posted by juliuscky:

You're correct! the lines change when I change points of focus.
Thanks!!

Just as well you didn't try to clean it off then.... ;-)

_eug