Howdy all. I'm giving a roll of Efke 25 to a friend to try and she uses Ilfotec as her developer of choice. After searching a bunch of threads, I have yet to find a simple answer to "What iso and time/temperature" for this film & developer. Does anyone have decent numbers for this combination which are tried and true? She is interested in a slow B&W film and had never heard of Efke 25. Many thanks in advance.