HC110 is not a recommended developer for Fomapan 100. Let us discuss why this might be so.
I have been able to glean the following possible reasons, based on comments I have seen on various web pages as well as some of my own testing.
1) There is a large loss of film speed with this film/developer combination.
2) Development times are too short when using reasonable dilutions of HC110.
3) There is an excessively upswept density curve with this film/developer combination.
4) Contrast tends to be hard to tame, perhaps a reflection of the interaction between items 2 and 3.
What do you think? Are any or all of these reasons true? Are there other issues to consider as well?