Is this caused by photoflo? (pic)

A

anitasanger

Well-known
Local time
1:20 AM
Joined
Dec 10, 2010
Messages
358
Every now and then while scanning my negs, I end up with the weird squiggly, oof line thing you see in the middle of this image. I can't for the life of me figure out what is causing it? Is it photoflo? Does anyone else ever get this? Can it be removed? Can it be avoided? It's driving me NUTS! Thanks.



squiggle by saveamerika, on Flickr
 
Have you tried re-washing it and re-scanning it? It looks like an artifact of a negative in a scanner carrier--not something caused by the development technique. What scanner are you using? What carrier?
 
newton rings

newton rings

i think those are newton rings caused by film touching the scanner glass.

search for it on the net
 
Newton rings... several have nailed it correctly.

Most likely the negative is bowing and touching glass. The best way to prevent bowing negs is to place them in archival plastic holders and place a heavy object (book etc) on it for a day or two to flatten the neg..
 
Not that yet another person needs to concur, but yes - Newton rings. I also use an Epson V500 scanner and haven't had them show up yet. I use the factory negative carriers both with and without the snap-in top/lid. There are aftermarket negative carriers with anti-Newton glass that others rave about but so far I haven't felt the need for them. Like another poster said - flatten them under something heavy for a few days & try again?
 
No one has mentioned the cure yet. :)

I'm guessing you are scanning with the emulsion side up (as per the instructions)? Try it with the emulsion side down - you'll need to invert the image (left-right) after scanning, and hopefully the scanner has enough range in the auto-focus to cope. If that fails, invest in a holder and ANR (Anti-Newton Ring) glass from Better Scanning.

Edit: Steelydam got there first!
 
Wait, wait. Shiny side down, or shiny side up? I've been doing shiny side down.

Steelydam, where to get these fancy neg holders? I use stock and rather hate them.
 
replying

replying

Like ChrisN said - betterscanning.com is the place people mention to get them. I can attest to the virtues of anti-Newton glass in my negative holder for my Beseler enlarger though, it is great. Holds the film flat and no Newton's rings. Well worth the extra money, in my book. Wife's soon going to be a resident, right? Not that they're paid well at that point, but at least it's something. Why not spend a little of it ahead of time? BTW - what specialty is she going into?
 
Ha, yeah thats me. She wants to go into high risk OB. It has a fancy name, but it evades me at the time. We'll find out which residency she gets by the end of february. In the meantime, we're waiting for her last rounds of boards to come in. Semi-stressful! ANyway, thanks for all the tips. Shiny side down or up?
 
You are doing it shiny side down = emulsion side up. Try it the opposite way, with the film curving up in the centre away from the glass, and see if that works. If that causes focus difficulties for the scanner, you will need to put ANR glass on top to flatten the negative, and that is most easily accomplished with the Better Scanning film holder. Good luck!
 
Sounds like Maternal-Fetal Medicine. It's a fellowship following a 4 yr regular OB residency. I have a friend doing that, she's busy, makes good money, and has found jobs quite easily in the cities where she prefers to live.

So far I have only scanned shiny side down on my V500.
 
You must log in or register to reply here.
Back
Top Bottom