Whats gone wrong here?

[cambsno]

Had this back from AG today - Portra 160 on a Leica M2 with 50mm. First 4 frames had lines across - 2 here while the rest were fine.

 

[joxby]

First 4 frames had lines across - 2 here while the rest were fine.

on the neg ??

 

[cambsno]

on the neg ??

Hard to say. I don't have a magnifying glass. Doesn't appear to be anything but line is thin so would be hard to spot.

 

[steveo_mcg]

Use a 50mm reversed, works for spotting stuff on slides.

 

[excalibur2]

Looks like the colours of a rainbow ROYGBIV..that might be a clue as light thru' water can cause that.

 

[freecom2]

Hard to say. I don't have a magnifying glass. Doesn't appear to be anything but line is thin so would be hard to spot.

With a problem like this, working out whether it is on the negative reduces the number of potential things causing it. Without that, it's everything from camera to dev to scanner.

 

[Terrywoodenpic]

I would sy that is a partially scratched emulsion.
It has scratched through the emulsion to different depths to expose the various layers making up the colours.

 

[freecom2]

I would sy that is a partially scratched emulsion.
It has scratched through the emulsion to different depths to expose the various layers making up the colours.

The layers are micrometres thick - scratches usually show as single line scratches, not multicoloured.

 

[srichards]

Who did the scan?

It's worth rescanning to see if the issue goes away... otherwise it could be the camera having dirt in that is dragging across the negative or the developing machine could have.

Worth emailing AG and asking them if they did the scan as it would point to an issue with their kit possibly as those don't look like the normal scratched negative problems.

 

[Terrywoodenpic]

The layers are micrometres thick - scratches usually show as single line scratches, not multicoloured.

True but I have had some like this in the past.

 

[freecom2]

True but I have had some like this in the past.

They tend to be lines on the scan, rather than scratches that have actually been scanned in - the Epson flatbed scanners are notorious for creating coloured lines on scans, which is entirely artificial and made up parts of the image.

 

[joxby]

Hard to say. I don't have a magnifying glass. Doesn't appear to be anything but line is thin so would be hard to spot.

It looks like a scan issue, but you never know whether there is something on the neg that in this case is producing a thick multi coloured scan line, without checking the neg.

 

[Terrywoodenpic]

They do not look like scan lines at all they are curved.

 

[joxby]

They do not look like scan lines at all they are curved.

You think so ?

I dunno, the second one is broken up and kinda random looking, not scan like at all.
But because we have the first one, its still shouting scan anomaly at me.

This could be cleared up in no time with a loupe, I'm amazed at how many peeps don't seem to have one.

 

[cambsno]

Will email ag and see what they say.

 

[freecom2]

Look at the negatives first!

Seriously, we can rule out so much just by looking for two seconds at the negatives.

 

[cambsno]

Look at the negatives first! Seriously, we can rule out so much just by looking for two seconds at the negatives.

I did but the line on the jpg is very fine as you can see. I don't think I can see anything on the neg but trying to spot that on a small neg is impossible even with good eyesight.

 

[srichards]

I did but the line on the jpg is very fine as you can see. I don't think I can see anything on the neg but trying to spot that on a small neg is impossible even with good eyesight.

You need a loupe. I'd also try rescanning with another scanner or the same scanner.

I got a loupe with a light for under £3 from amazon.

My mark (coincidentally from AG) turned out to be crud of some kind and it disappeared of its own accord.

 

[excalibur2]

What's strange when enlarged in Photoshop..in the 2nd Photo a line has kinks in it and is not straight.