Color bleed/fringing

[flashfirenze]

Hi,

I've just shot a test roll with a recently CLA'd Canonet.

Scanning in the first results, I've noticed that the shots all have an orange tint bleeding in the upper (and sometimes lower) edge of the frame.

I am curious if this is a result of poor scanning? (possible, Im using an epson 2400)

Is it a result of the Lab screwing something up?

Or does this come from poor light sealing (a problem, bc these were just replaced)

Any info someone may have would be greatly appreciated!

Flash

 

[payasam]

The lower edge of the first picture and the upper edge of the second show that the orange occurs at the sprocket holes. Most probably a processing fault.

 

[mbisc]

What do the negatives look like? If you have a light-leak or something, it should be obvious from the negtives...

 

[sienarot]

If it's not on the negatives, it's possible it could be poor scanning, such as the case when the negative is not completely flat and the curvature of the film gives uneven colour when scanning.

 

[flashfirenze]

Hmm

Hmm

Ok, thanks all. So the consensus is that it is either the processing, the scanning, or light leak...🙄🙄🙄

:bang:

 

[payasam]

I do not see what a light leak can have to do with sprocket holes. I count eight small patches of orange/yellow, just as many sprocket holes as a frame has.

 

[flashfirenze]

I do not see what a light leak can have to do with sprocket holes. I count eight small patches of orange/yellow, just as many sprocket holes as a frame has.

Ok, I've seen those patches as well. My question is, what are they?

I am a newbie and am trying to troubleshoot a problem. Unfortunately, the camera, scanner and lab are all new. I figured an RFF'er would be able to identify this problem.

Anyone?

😕

 

[sienarot]

Well, you haven't exactly given any more information.

First off, do you see it on the negative? If you do, atleast it will eliminate the scanning as a culprit, which then leads to either bad developing (unlikely) or a leak of some kind. If you don't, it could very well be a bad scan.

 

[flashfirenze]

Well, you haven't exactly given any more information.

First off, do you see it on the negative? If you do, atleast it will eliminate the scanning as a culprit, which then leads to either bad developing (unlikely) or a leak of some kind. If you don't, it could very well be a bad scan.

I am at work all day and my negs are at home. I will check tonight, but I don't see how I will be able to make out such a subtle color fringe with my naked eye on a negative.

 

[payasam]

A light leak in the camera would expose film all over, not just near the sprocket holes; but exhausted or otherwise incorrect chemicals can have just such a localised effect because of surface tension or whatever the thing is called.

I assume you scanned negatives. Were any prints made and, if yes, do they not show the same fault? [EDIT] You must have other negatives, ones which you know to be good. You might scan a couple of them to see if there is something wrong with your scanner or your scanning.

 

[dmr]

It does not look like a light leak to me.

A light leak will significantly darken parts of the negative, often around the edges, but not always. It can be dark blotches emanating from the edges into the frames, often darker where the film sat for a while when the camera was in bright light.

These will show up as white or lighter patches in the print or scan.

Yours appear to be color artifact, coincident with the sprocket holes. My guess is some kind of a scanning or printing issue. Maybe a chemistry issue, but my hunch says no.

 

[Filmnut]

I assume that you have scanned the negs, so my answer is based around that. This is usually caused by too much of the "rebate", which is the edge of the film, showing when it is in the film holder for scanning. Since the spcoket holes are by definition, HOLES they let more light through than the film base, and this extra light causes "bleed" into the image area. One sees this effect also when enlarging and the sprocket holes are not covered well enough.
The other thing, is that the severity of the bleeding is dependent on the negative denisity, if the neg is underexposed, or even normal, this may not happen at all, but the heavier (denser) the neg is the worse it will be. Also, if there is white, or light colours near the edge, it will be more apparent than if there is near black at the edge of the image.
It is due these factors that it will show one time, but not another.
If you try scanning the negs again, but take care to cover up the sprocket holes, you will likely be fine.
Good Luck!
Keith

 

[flashfirenze]

I assume that you have scanned the negs, so my answer is based around that. This is usually caused by too much of the "rebate", which is the edge of the film, showing when it is in the film holder for scanning. Since the spcoket holes are by definition, HOLES they let more light through than the film base, and this extra light causes "bleed" into the image area. One sees this effect also when enlarging and the sprocket holes are not covered well enough.
The other thing, is that the severity of the bleeding is dependent on the negative denisity, if the neg is underexposed, or even normal, this may not happen at all, but the heavier (denser) the neg is the worse it will be. Also, if there is white, or light colours near the edge, it will be more apparent than if there is near black at the edge of the image.
It is due these factors that it will show one time, but not another.
If you try scanning the negs again, but take care to cover up the sprocket holes, you will likely be fine.
Good Luck!
Keith

Thanks! I think this may be the case. Unfortunately, I didn't have any prints made, and have only scanned the negs. When I was trying to troubleshoot at home, I was noticing that when the negatives are in the little plastic holder for the scaner, the sprocket holes are indeed exposed.
I will look for a way to cover these.

any suggestions?🙄

 

[flashfirenze]

I assume that you have scanned the negs, so my answer is based around that. This is usually caused by too much of the "rebate", which is the edge of the film, showing when it is in the film holder for scanning. Since the spcoket holes are by definition, HOLES they let more light through than the film base, and this extra light causes "bleed" into the image area. One sees this effect also when enlarging and the sprocket holes are not covered well enough.
The other thing, is that the severity of the bleeding is dependent on the negative denisity, if the neg is underexposed, or even normal, this may not happen at all, but the heavier (denser) the neg is the worse it will be. Also, if there is white, or light colours near the edge, it will be more apparent than if there is near black at the edge of the image.
It is due these factors that it will show one time, but not another.
If you try scanning the negs again, but take care to cover up the sprocket holes, you will likely be fine.
Good Luck!
Keith

So I've inspected the negatives. I cannot find anything on the negatives, but even if it were there, I would not be able to see it with the naked eye.

In terms of covering the sprocket holes better, I am a bit baffled. The negatives slide into the plastic film holder made especially for 35mm. A tiny bit of the holes are exposed, but I have no idea how I would cover up those holes. Anyone who has experienced this problem or has any ideas please let me know. Thanks!

 

[Filmnut]

The only thing that I have found that will work in a situation like this is to use some narrow tape, you can split some to size from a larger roll, and then carefully cover up to sprocket holes. Big time pain, I know, but sometimes it is the only way! Beware of the extra dust, hair, and fingerprints this can add!
Keith