Problem with Newton ring

[Varakan Ten Tipprapa]

Please anyone help me .. I've been trying to find an Anti-Newton ring spray, but got nothing..

I live in Chicago USA. I already checked at Helix and Calumet here .. They said Jobo was stop product line for this thing for long time already...

Why I do need is rear stuff?... I print 4x5 on negative carrier with glasses. One side is an Anti-Newton glass, but another one is just typical glass. I checked many ways.. flipping the films for both side.., but still has it.

Do we have any trick during developing films or any "DIY" chemical for Anti- Newton ring.. In case of if you guys know where I can buy in US.. Please tell me.

(PS. I found one web form England, they have a Teternal product, but too far away)

[Eric Woodbury]

Never having used glassed carriers, might I suggest you go glassless (and ringless). I print 5x7 without glass.

If you are using a coldlight, then remove the plexiglass diffusor from the light source and replace the top glass with a piece of white plexi. This works, too.

[Gem Singer]

Hi Varakan,

Is the Anti- Newton glass in your negative carrier on the top, or on the bottom? The Anti-Newton glass should be on the top, positioned so that the shiny side of the film ( the base side) is in contact with the textured side of the Anti Newton glass. There is no reason for you to need Anti-Newton spray if the proper surfaces are in the proper position.

[Tom Westbrook]

Some films, like Tmax 100, are smooth enough on the emulsion side that I get rings sometimes. I usually find that cleaning both glass surfaces thoroughly solves most issues. Dust and crud create uneven pressure on the film so you get rings.

[George Stewart]

Try:


http://www.aztek.com/Products/Aztek%20Imaging%20-%20Scanning%20Supplies (http://www.aztek.com/Products/Aztek%20Imaging%20-%20Scanning%20Supplies)(main).htm

[Kirk Gittings]

I think this is where George was trying to send you. These materials are also available in smaller kits from Freestyle and B&H.

pam@aztek.com

www.aztek.com

[Varakan Ten Tipprapa]

Thank you for all answers,

I use glassed carriers, and the top one is Anti - Newton ring glass.. No problem with the top one . For the emulsion side, Lower one is just typical glass. That was the main problem for Newton ring effecting.

As Tom said, I also use Tmax 100 loaded sheet, and seem you're right for super fine grind of Tmax 100.

George, you link didn't work . Please send me a new one.

So Eric, do you think the glassed carrier is disadvantage? Should be non glasses? ... Maybe is the answer for better than keeps looking for Anti-Newton ring spray

Please answer me again.
Thank you

Varakan.

[Varakan Ten Tipprapa]

By the way, I've been useing Saunders 4500-II B&W Diffusion

Thank you for every help.

Varakan.

[Tom Westbrook]

I've been using Saunders 4500-II B&W Diffusion

Very interesting.

I got one of those enlargers last year and the glass carrier (a new one) was shimmed too high so that the glass put too much pressure on the negative and caused rings.

Anyway, to fix it, I had to take out the clear glass (not the anti-newton glass). Just unscrew the silver metal strips that hold the clear glass down. I removed the sticky tape that they used to shim the glass, then screwed the glass back in without the shim tape. I haven't had any issues since (except for the cleaning thing I mentioned above). The glass moves around slightly now, but that's of no importance to functionality.

Of course, this may not be your problem, but it might be worth a try, if you think it might reduce pressure on the negative. Save the shim tape strips in case you decide to replace them.

[Varakan Ten Tipprapa]

"I got one of those enlargers last year and the glass carrier (a new one) was shimmed too high so that the glass put too much pressure on the negative and caused rings. "

Mannn, You gave me a bit hit of answer. I feel so, I'll take the tape down. Let's see what happen.

Talk about the Glass negative carrier, Do you think, it is the best solution for printing to keep film fate as much as you can for the matter of sharpness, or with out glass to get the better tone?...What do you choose?

With or with out glass? everyone please share opinion ..please.

Cheers.
Varakan.

[Gem Singer]

Hello again Varakan,

A good quality glass negative carrier will not interfere with the quality of the projected image, providing that it is kept spotlessly clean. It will improve print sharpness by holding the negative perfectly flat, providing that the enlarger is alligned accurately. I changed to a glass negative carrier after making 11X14 prints for forty-five years with a 4X5 glassless negative carrier. When I began to make 16X20 enlargements routinely, I discovered that my 4X5 glassless negative carrier did not hold the film flat enough for making those larger sized prints.

[Oren Grad]

If you want critical sharpness for big enlargements, you almost certainly will want to use a glass carrier. Partly it's about holding the negative flat, but partly it's about making sure the negative stays where it is after you focus, depite the hot lamp going on and off. With the glassless carrier, it's all too common for 4x5 negatives to "pop" after a few seconds with the lamp on or off.

I also have an LPL 4500II, and I, too, occasionally have gotten Newton's rings when printing 4x5 TMX negatives using the glass sandwich carrier that has anti-Newton glass on top and plain glass on the bottom. Yes, the emulsion side of TMX is that smooth. I've never had the problem with any other film in that carrier.

[John D Gerndt]

Like Tom I have had issues with the pressure used in a glass carrier.I used a piece of tape on the metal of the carrier to keep the glasses from getting too close together. There IS some room for variation in the absolute flatness of your film, it does not effect you image as much as "Those darn rings!"

Cheers,

[Frank Doering]

Had the same problem with same equipment. I finally had Focal Point put Anti-Newton glass in the BOTTOM of the carrier as well. Does the trick; no sharpness reduction (I did side-by-side comparison) at maximum enlargement (the A/N glass is so close to the emulsion that the paper's view of the negative is not blurred).

[Rob Gertler]

I had exactly the same problem with TMX-100. I switched to Fuji Acros-100 (4x5 and 120 sizes) because of this. In addition to having a noticably superior accutance, Acros has a slightly rougher emulsion side which completely eliminates the really annoying (and costly) problem of Netown's Rings.

[John Davies]

Newton Rings problem can be solved simply by using a hair-dryer !

I started to use anti-Newton ring glass when making 60 inch prints and needed all the sharpness my 5x4in and 6x9cm negatives could give me. Even using this specialised glass the Newton ring patterns were still evident on the prints. One of the main causes of Newton rings is water vapour or dampness usually found in the gelatin film. Like paper photo prints, negatives will "soak-up" or release moisture depending on the surroundings and relative humidity. Moisture from negatives can be removed/displaced by warm air with low moisture - a hair-dryer or convection heater does the trick. Apply warm air for about 30 seconds either side to evaporate moisture from the film. Using this method the Newton ring effect disappears.