Weird warping in my images

[s_c24]

<p>Hello there fellow photographers! <br>

I've been having some issues with scanning my color negatives lately. This isn't the first time dealing with this. <br>

It's getting BEYOND the point of frustration, and I have yet to find a solution to this weird warping effect that my scanner seems to pick up when scanning my negatives. Here are a few examples of what I'm talking about: and

It's horizontally near the middle... What is this?!!! For the life of me I can not figure out what is causing this effect! I have a 2 year old Canon 5600F that is still in good condition. I usually scan my negatives at at least 2400dpi (for a larger image). This effect happens on a few images every so often, but the fact of the matter is, spending an afernoon scanning a few rolls of film, then having to re-scan a majority of the images because this effect gets on it... it's not fun. It's a huge time waster, and I'd really appreciate if someone could explain to me what I'm doing wrong here. <br>

Thank you for your time in helping me become more productive in sharing my captured memories.<br>

<img src="file:///G:/Original/2013/broo/IMG_0052.jpg" alt="" /></p>

[larrydressler]

<p>What does the glass look like. I had a simular problem with an Epson. It was out gassing build up on the underside of the glass. I removed the top and cleaned the glass and it went away.</p>

[s_c24]

<p>It does seem to be in the same general area every time I see it appear. I will most certainly clean the glass up, and try again. Thank you so much!</p>

[lex_jenkins]

<p>Those are <a href="https://www.google.com/search?q=Newton%27s+Rings&rlz=1C1LENN_enUS490US490&oq=Newton%27s+Rings&aqs=chrome..69i57&sourceid=chrome&es_sm=122&ie=UTF-8#q=Newton's+Rings+scanning+film&safe=off">Newton's Rings</a>. This doesn't occur with some types of dedicated film scanners that didn't require direct contact with glass, but is a frequent problem with flatbed hybrid print/film scanners. You can Google around for tips to minimize the effect, depending on your scanner. Often the simplest method is to relieve some pressure on the negatives. The trade off is a risk of some loss of sharpness if the film isn't perfectly flat and in contact with the glass.</p>

[bethe_fisher]

<p>I agree with Lex that they're Newton's Rings. Your negs aren't being held completely flat across the whole width and are touching the glass in the middle. My scanner holds the negs a little bit above the glass and the really curved ones can do this. Your best bet is likely to make sure the negatives are as flat as they can be (this is really what coffee table books are for) before you scan them. </p>

[bernard_lazareff]

<p>Agree that both frames show Newton's rings. Apparently you use a flatbed scanner where the film is right against the scanner glass.</p>

<p><em>Normally</em>, on a flatbed scanner, you should have the emulsion side up to have the image in the proper orientation. <em>But</em>, if you scan with the emulsion down, and since your film holder does not seem to hold the film very tight, you will have actual contact only at film edges (film curl) and you should avoid the Newton's rings. And even if the film would be held flat against the glass, the emulsion side is more "dull" than the backside, and it might still work. You need, of course to "mirror" the image either in the scanner software of in post.</p>

<p>Could you please try and report back?</p>

<p>Furthermore, the first of your two examples shows a strange shear: the telephone lines or whatever seem "broken" slightly to the left of the middle of the photo. IMHO that is a completely different problem, like poor guiding of the scanner stage. No advice to submit on that one. </p>

[Dustin McAmera]

<p>The scanner will get warmer once it's been powered up for a while, and so the film will curl more, and be more likely to touch the glass. Also, some types of film curl more badly than others.<br>

I find I can lessen the film's tendency to curl by breathing on the emulsion side before scanning (I guess the condensed moisture expands the emulsion a tiny bit; anyhow, the effect doesn't last for long). Scanning goes better on cool days, or in the evening. I don't even try when it's hot.</p>

 

[larrydressler]

<p>This film holder holds the film super flat.<br>

http://www.amazon.com/Lomography-DigitaLIZA-35mm-Scanning-Mask/dp/B004BZGFHM</p>

[bernard_lazareff]

<p>OP sc registered to PN on 29-Jul (3+ days ago), asked his question same day, then seems to have lost interest. We don't know whether our advice was effective in solving his problem or even whether he/she has read it.</p>

[lex_jenkins]

<p>Not everyone lurks on photo.net 24/7 or even reads it daily. Some folks only check in once a week or so. There's no deadline for responding to replies to a question. I've seen folks come back a year or more later to thanks others for their helpful replies.</p>