antoinebar

here it is (I scanned the whole scanner area).

It appears so strong. It clearly cannot be neglected :(...

Can you post an example of the scan without any film/print that's close to middle gray?

What do you mean ? I am a true beginner, but when we have no film, the result is all black right ? :confused:

Is the negative underexposed? If so, there is less contrast between the image and the substrate. This difference is amplified by image processing. This is easily demonstrated by scanning an unexposed part of the time, such as the trailing leader.

Yes, as i said it is !! And a scan without any folder and film also has these light regularly bands. But i cannot imagine that it is a normal behavior.

Dust on the scanner sensor will cause blurry streaks in the direction of travel. They become more prominent if the negative is under-exposed, because the scanner software attempts to set the exposure accordingly. Streaks in the film due to processing tend to be broader, and may "tail" from particularly dense parts of the image.

FYI The scanner is pretty new and has almost never been used :/. Is your explanation still relevant ?

Thank you for your answers.

FYI, here is two frames with better resolution.

But, as suggested (don't know why I did not though about it before), I did an empty scan, and, with the restricted area of the 120 frame, here is what i get, after tweaks to increase the visibility of the bands:

So it is clear that it does not come from the film/holder, but from the scanner itself.

It is pretty annoying, as i bought the scanner from a particular. Hopefully I still have an available warranty. Do you have still an idea about where it can technically come from ? It can help me if I have to demand a repair/replacement.

Thank you

[EDIT] and yes, the film was underexposed ... as this was my first try with my Yashica :P

Hello everyone.

I recetly bough a Epson v850 scanner, to be able to scan my 120 films.

Unfortunately, i have until now a pretty annoying problem, as we notice huge vertical bands, specially in the dark areas, with both silversfast and epson scan softwares :

Do you think that it just comes from the fact that the film is not so flat, or a more complex hardware issue ?

Thank you in advance for your feedbacks.