I would like to use lith negative film in old field cameras of various sizes (9x 12, 13x18 and 18x24 cm) because lith foils can be easily cutted to the size and placed in the film-holder leaving on the red light into the dark room. Can someb ody suggest a good developper solution for avoiding the extremely strong contras t wich is tipical of this negative? I think that Rodinal diluted 1+50 could work (in effexct I did try, the results are not so good, perhaps I have to change th e developping time), but probably some other product or home-made formulation wi ll work better. Thank you Franco