mirage
Posts: 3612
Joined: Mon May 31, 1999 4:44 am

How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 5:08 am

Hi,

It's a simple question: anyone knows how to remove finger-prints from negatives?

thanks
Luis
 
Blackened
Posts: 535
Joined: Mon Mar 12, 2001 4:19 am

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 5:22 am

...And how to remove them from slides?

I would say it's not at all possible because the acid you have on your skin destroys the picture. You can't really fix it anymore.
Bring it back, bring it back, bring it back
 
mirage
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RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 5:26 am

hhmmm that's bad news, the guys at the lab have made something terrible.

Anyway, thanks for your reply Blackened.

Luis
 
Blackened
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RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 5:58 am

I don't know if it's 100% true but it might be. Our skin has a pH of 5.5 and that's enough to damage a print. I've seen prints where you couldn't remove fingerprints anymore but with a little water it works there. I guess that's not possible with slides or negatives. But sometimes you can just take a piece of cloth and it more or less removes the fingerprint from a slide. Maybe it's not always so much acid but more fat and dirt.
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Jan Mogren
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RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 6:19 am

It seems to be more difficult with old fingerprints.
On slides, I have sometimes thought that if I can't get this fingerprint off, I might as well throw this slide away.
In those cases I tried a crazy stunt and used Isopropanol on a cottonstick, and it worked!
***I have NO IDEA if the slide/neg will be destroyed with time because of this !!******
In the case I described it simply didn't matter to me.
The slide would have been a goner..
/JM
AeroPresentation - Airline DVD's filmed in High Definition
 
Guest

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 7:40 am

I don't know if that's actually safe (alcohol), or if it will have a long-term damaging effect.

You should be able to wash your slides/negs under a running tap, and then with a CLEAN finger, gently brush away the fingerprint with your fingertip (while running your finger and the slide/negs under the tap the whole time). This will probably only work with NEW fingerprints, not ones that have been there for a while. (Don't forget, the negs/slides will have been washed with water in the lab, so it's quite safe - the only problem you might experience is drying marks - marks from where the water evaporates as the negs/slide dries out.)

Alternatively, you could try a lint-free tissue, as you would use to clean a camera lens. Only use this DRY, not wet.
 
mirage
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Joined: Mon May 31, 1999 4:44 am

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 8:18 am

I tried to wash the negative under a running tap with neutral water (I think), gently brushing away the fingerprint with my fingertip but the result was worse, now that frame is lost.

On the under side of the negative it seems some substance has melted creating an adhesive negative.

Luis
 
Sonic99
Posts: 625
Joined: Sun Jun 03, 2001 8:39 am

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 8:31 am


That was the emulsion Luis.

Fingerprints are not removable on either side of a slide. The oils and acids residing on fingers will embed in the emulsion (or opposite side) which is impossible to clean off (even trying to wipe off fingerprints with a lint-free cloth immediately after touching a slide).

At the lab where I get my slides developed all the personnel that handle slides wear white gloves so as not to leave their mark on the slides.

Stephan
 
mirage
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RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 8:50 am

Living and learning, no problem.

Thanks
Luis
 
jwenting
Posts: 9973
Joined: Mon Apr 23, 2001 10:12 pm

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 2:35 pm

if the print is not on the emulsion side, there is hope. Carefully swipe with a piece of lenstissue or lint-free cloth (clean one, of course).
Be very carefull or you will get scratches.
I wish I were flying
 
rindt
Posts: 876
Joined: Thu May 25, 2000 3:08 pm

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 2:59 pm

Fingerprints are easy to remove from slides on either side... provided the fingerprint is "fresh". Simply stick the slide under luke-warm water, and rub away the mark. Make sure the slide is NOT in the frame... this could cause the glue to melt and damage the slide even further. With plastic mounts, the water never quite dries properly around the edges, so it's necessary that the slide be removed from its mount.

Once the mark has been removed, hang it to dry for about 20 minutes... I have done this a few times when slides have been accidentaly "soiled".

Regards,
Rob

What other people think of you is none of your business!
 
ake0404ar
Posts: 2379
Joined: Wed May 24, 2000 10:55 am

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 7:26 pm

White gloves were already mentioned as a precaution measure.... back when I still shot prints, while scanning I always worn white gloves to minimize the possibility of having fingerprints on the neg.

Vasco
 
Blackened
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Joined: Mon Mar 12, 2001 4:19 am

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 8:27 pm

Where can you get the white gloves from? Do they sell them at photo stores?
Bring it back, bring it back, bring it back
 
jwenting
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Joined: Mon Apr 23, 2001 10:12 pm

RE: How To Remove Finger-prints From Negatives?

Tue Aug 14, 2001 8:39 pm

theatrical supplies comes to mind. Might check it out myself.
I wish I were flying
 
Granite
Posts: 5026
Joined: Tue May 18, 1999 5:55 pm

RE: How To Remove Finger-prints From Negatives?

Wed Aug 15, 2001 4:12 pm

Hi Mirage

The best way to not to have fingerprints on your negatives would be to stop holding them with your fingers.

Hope this information helps.

Regards
Gary Watt
Aberdeen, Scotland
 
ake0404ar
Posts: 2379
Joined: Wed May 24, 2000 10:55 am

RE: How To Remove Finger-prints From Negatives?

Wed Aug 15, 2001 4:34 pm

Gary,

was that a little bit sarcastic....?????



White gloves are sold at most photo stores for a couple of bucks....

Vasco
 
Granite
Posts: 5026
Joined: Tue May 18, 1999 5:55 pm

RE: How To Remove Finger-prints From Negatives?

Wed Aug 15, 2001 4:38 pm

Hi Vasco

Yes, a little sarcastic but a nice touch I thought.

I have a pair of white gloves also but my hands seem to be getting bigger as I can hardly get them on now.

Need to get bigger gloves  Smile

Regards
Gary Watt
Aberdeen, Scotland
 
Sukhoi
Posts: 1561
Joined: Thu Jun 01, 2006 3:03 am

RE: How To Remove Finger-prints From Negatives?

Wed Aug 15, 2001 5:43 pm

The best way to not to have fingerprints on your negatives would be to stop holding them with your fingers.

A classic piece of advice from Gary Big grin

Gary has been pulling too many rabbits out of hats thats why his gloves dont fit  Wink/being sarcastic

Cheers

Paul
 
mirage
Posts: 3612
Joined: Mon May 31, 1999 4:44 am

RE: Granite

Wed Aug 15, 2001 9:10 pm

"Hi Mirage

The best way to not to have fingerprints on your negatives would be to stop holding them with your fingers."

Hey Gary, what's your problem? Can't you read english?

Read my post were I wrote: "the guys at the lab have made something terrible.

hope this helps

Luis
 
Granite
Posts: 5026
Joined: Tue May 18, 1999 5:55 pm

RE: Granite

Wed Aug 15, 2001 10:03 pm

Hi Mirage

Sorry, I did't actually read your post, only the header.

Yes, I can read English, infact it is my native language. If you look at my profile you will see where I am from.
respected users list. What is the reason for that?

As Vasco suggested, maybe a pair of gloves will help. They are very inexpensive. If they come in pairs, ie. 4 gloves, keep a pair for yourself and pass the spare pair (2 gloves) to the photo lab.

Now your negatives will be clean.

Regards
Gary Watt
Aberdeen, Scotland
 
mirage
Posts: 3612
Joined: Mon May 31, 1999 4:44 am

RE: Granite

Wed Aug 15, 2001 10:30 pm

To be very sincere I don't check my profile to see that respected users list. I filled my profile a long time ago and that's it, and I didn't ask nobody to put me in their respected users list. I respect everybody and I disagree with everybody when necessary.

I don't like gloves, reminds me hospitals.

Luis

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