lens dirt
Moderator: Andreas Wideroe
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BolexPlusX
- Posts: 423
- Joined: Thu Nov 28, 2002 3:00 pm
- Location: Long Island, New York
Well, it depends.
Most lens "dirt" is just skin oils and so on on the outer surface of the front lens element, and you can simply wipe them off.
The inner elements generally don't get dirty, since they are pretty isolated from the outside world.
What the inner lens elements do get is fungus, and since it is a living organism it can grow until it renders the lens opaque and destroys it.
Generally speaking it has the apearance of a spiderweb, is this what you are seeing?
Also, the typical Super-8 lens has a lot of elements and little bits and pieces that rarely go back together the way thay come apart. (Especially for folks like me who aren't camera repair technicians.)
Most lens "dirt" is just skin oils and so on on the outer surface of the front lens element, and you can simply wipe them off.
The inner elements generally don't get dirty, since they are pretty isolated from the outside world.
What the inner lens elements do get is fungus, and since it is a living organism it can grow until it renders the lens opaque and destroys it.
Generally speaking it has the apearance of a spiderweb, is this what you are seeing?
Also, the typical Super-8 lens has a lot of elements and little bits and pieces that rarely go back together the way thay come apart. (Especially for folks like me who aren't camera repair technicians.)
Leave the job to a professional. I took one lens apart recently, it seems like a simple 13mm wide angle for a 16mm camera but still haven't figured out how to put it back together again, inside it's more like a jigsaw puzzle.
Those specks inside the lenses are usually of paint that they coat the inside of the barrel with, and they peel off over time. They won't show up unless you use a very small aperture, it all depends how many specks there is of course and whether they are at the front or middle or back of the lens. If it is at the middle or the rear of the lens elements it won't show up as much.
Bill
Those specks inside the lenses are usually of paint that they coat the inside of the barrel with, and they peel off over time. They won't show up unless you use a very small aperture, it all depends how many specks there is of course and whether they are at the front or middle or back of the lens. If it is at the middle or the rear of the lens elements it won't show up as much.
Bill
BK,
I should have listened to you because now I have gone and done it! I Took it apart, damaged the threads and had to relegate it to file #13. Well, you live and learn. It was a 1" lens for a 16mm movie camera. It's o.k. because I have a c-mount adapter with a 28mm wide angle 35mm camera lens that I can use in it's place. It's quality is going to be much better, I'm sure.The only problem is that the diameter of the lens is so much wider than the 16mm versions that it gets in the way of the viewfinder objective.
I should have listened to you because now I have gone and done it! I Took it apart, damaged the threads and had to relegate it to file #13. Well, you live and learn. It was a 1" lens for a 16mm movie camera. It's o.k. because I have a c-mount adapter with a 28mm wide angle 35mm camera lens that I can use in it's place. It's quality is going to be much better, I'm sure.The only problem is that the diameter of the lens is so much wider than the 16mm versions that it gets in the way of the viewfinder objective.