Fuji Provia with strange yellow stains?

[CasioCassette]

I just got back a roll of Provia from the lab, and wondering what this strange yellow discolouration is on some of the frames. It was a fresh roll of film, stored in the fridge, and shot with my trusty Nikon F100 which has never given me any trouble whatsoever. I had a KR3 filter on the lens throughout the whole roll, as I most often do when shooting slides. Here are two examples of what it looks like on the light table. There are altogether 4 sections on the entire roll that are affected by this yellow color, and at all 4 places the stain spans across at least 2, but no more than 3 frames. I'm thinking this could be a fault at the develoment stage. I've only used this local lab a couple of times but nothing like this has happened with my films before.

Any advice what could have caused this?

Thank you.

 

[Sirius Glass]

Development problems. Take the film back to the lab and start asking questions.

 

[MattKing]

To me it looks more like a light leak.

 

[brbo]

Light leak with positive density on slide film? How could that happen?

 

[MattKing]

Light leak with positive density on slide film? How could that happen?

A darkroom light leak, not a camera light leak.

 

[brbo]

I still don't get it. A light leak is a light leak. It would build additional density on film which would show as lower density after reversal.

 

[MattKing]

It is an uneven colour cast, which can happen if a portion of the film is exposed to light - in this case probably tungsten light.

 

[brbo]

I can see it's an uneven cast. I'm asking what kind of ADDITIONAL light causes MORE density in any layer in the positive image.

 

[cmacd123]

does not seem to be an effect on the unexposed edges.

 

[lamerko]

It looks like a slight light leak, but strangely, the base is black as it should be after the reverse. Maybe something during color processing?

 

[koraks]

A light leak is a light leak. It would build additional density on film which would show as lower density after reversal.

Yes. I'd do as @Sirius Glass suggests. Take it to the lab that processed this and get their input on it.

 

[brbo]

It looks like a slight light leak, but strangely, the base is black as it should be after the reverse. Maybe something during color processing?

Color developer stage of E-6 process can be done with lights on.

I'm pretty sure it's not a light leak, but I'm curious if anyone can explain how a light leak (camera or darkroom) could look like that...

 

[Oz Etkin]

Here is a link to the Kodak E-6 troubleshooting guide: https://125px.com/docs/techpubs/kodak/z119-12.pdf.

From this I'd say it's some issue with the bleach or fixer, but I'm not sure what. Could be an issue with the first developer as well.

I don't see any way a light leak could possibly cause this because, as @brbo has said, that would reduce the density, not increase it.

 

[CasioCassette]

Thanks everyone for the responses.

Today I managed to speak with the lab in person, but they couldn't offer any explanation about what went wrong. They processed my roll with 9 more in fresh E-6 chemicals and the other rolls, they said, came out fine. I just hope this won't happen again to my next roll.