I did that on purpose last week. I have some old ISO 100 color negative film and wanted to see if it would be worthwhile to develop it with B&W developer. I exposed some control strips and ran the film through T-max developer. It is probably not worth it to post the results, but it is looks un-usable. Without actually plotting it out, the '0.1-above base' step looks like it falls around ISO 6 and the base density is around 2.0.
Originally Posted by polyglot