What's going on with this negative?

[hospadar]

Shot a very expired (1995) roll of fomapan 400 (totally unknown storage, but almost certainly not refrigerated/frozen) and developed in rodinal (1/50). Looks like mold maybe? Any chance this has to do with bad development of some kind (my first time using rodinal but never seen anything remotely like this).

 

[retina_restoration]

This is entirely the result of the fact that it is way past its expiration date. To be expected.

 

[Sirius Glass]

Since the marks are on the trees and bushes, the problem is in the emulsion.

 

[Donald Qualls]

Since the marks are on the trees and bushes, the problem is in the emulsion.

Albeit most likely due to interaction with the backing. When I've seen film that looked like this, I wound up concluding it was due to humidity (can happen if frozen film is unsealed while still cold) and/or fungus growth on the emulsion.

 

[koraks]

I wound up concluding it was due to humidity (can happen if frozen film is unsealed while still cold) and/or fungus growth on the emulsion.

I'd lean in the same direction. And certainly this:

This is entirely the result of the fact that it is way past its expiration date.

Any chance this has to do with bad development of some kind

Nah, this was beyond your control.

 

[Andrew O'Neill]

I agree. Looks like backing paper issue.

 

[hospadar]

Great to know, honestly kind of excited to see the scans, seems like they will be crazy.

 

[hospadar]

Had to share, most of the shots were pretty much ruined but the effect is really pretty cool with a couple of the shots

 

[koraks]

That's actually quite pretty in a way!