How to convert negative image to positive

[satimis]

Hi all,

I have image files scanned on film negatives with mobile phone. Please advise how to convert them to positive images.

Sample files attached.

Thanks

Regard

 

[bulldurham]

Open in PS, copy file (cntrl J) then cntrl I to invert image.

 

[480sparky]

The specific steps will depend on the app you use. But in a nutshell:
1. invert the colors
2. create a mask to delete the orange base color of the film.

 

[satimis]

Open in PS, copy file (cntrl J) then cntrl I to invert image.

Thanks for your advice.

On this PC, I'm running GIMP on Linux here. I have to start another PC to do it.

 

[480sparky]

GIMP has invert function as well. (Shocking to PS-bois out there, I know)

Colors > Invert. The step can be assigned a keyboard shortcut.

 

[satimis]

GIMP has invert function as well. (Shocking to PS-bois out there, I know)

Colors > Invert. The step can be assigned a keyboard shortcut.

GIMP Colors -> Invert

The result is very poor. Please see screeshots attached.

Regards

 

[480sparky]

Read post 3.

 

[satimis]

Read post 3.

Could you please advise how to "create a mask to delete the orange base color of the film" ?

Would following link be suitable for me to follow ?
Automating inverting negative scans with orange mask using GEGL


Thanks

 

[480sparky]

Scanning Negatives with Gimp - Karl Heinz Kremer's Ramblings

How to Scan Negatives Using Gimp This step-by-step instructions show how to remove the orange map from a negative scan using just Gimp's on-board tools. Behind every small image "hides" a full-screen (800x600) image that shows more detail. Load the scan of the negative into Gimp. Use the color...

www.khk.net

 

[vintagesnaps]

What film was this? I'm trying to figure out how they went from magenta to green... or why they were magenta to begin with.

Maybe you'll need to get them scanned by a photo lab. Or next time, get scans when you get film developed.

 

[satimis]

What film was this? I'm trying to figure out how they went from magenta to green... or why they were magenta to begin with.

Maybe you'll need to get them scanned by a photo lab. Or next time, get scans when you get film developed.

Old Kodar film, >30 years.

Some of my old photos turn to yellowish color. I'm prepared digitising all old hard copy photos. I still have all their negatives well packed in their folders. A friend here advised me to scan their negatives.

I still have an old Epson flatbed scanner but the scanning speed is too slow. I use my Samsung S22 Ultra mobile phone as scanning device. It works without problme on scanning photos.

 

[satimis]

Scanning Negatives with Gimp - Karl Heinz Kremer's Ramblings

How to Scan Negatives Using Gimp This step-by-step instructions show how to remove the orange map from a negative scan using just Gimp's on-board tools. Behind every small image "hides" a full-screen (800x600) image that shows more detail. Load the scan of the negative into Gimp. Use the color...

www.khk.net

Hi,

Thanks for your link. I'll go through it and come back later

 

[vintagesnaps]

Was it old B&W film? I've found that can still be usable years later. With color film the color can shift. Do the negatives have that color to them? I'm just wondering if it's the negatives or the scans.

 

[satimis]

Was it old B&W film? I've found that can still be usable years later. With color film the color can shift. Do the negatives have that color to them? I'm just wondering if it's the negatives or the scans.

Color film

They are scanned images. I used my Samsung S22 Ultra mobile phone scanning the films, It works seamlessly on color photos

 

[vintagesnaps]

Maybe the color shifted since the nagatives seem to be one color. And that's pretty outdated for color film. Of course you could adjust the scans and see what you can do.