I have received the following. I have never processed a colour negative film in my life and so I am hoping for replies to come in.

Comment: Hi, my name is Thomas and I am a industrial-design student from Germany.
For my Bachelor thesis I am currently tackling the negative colour development for home usage as I have been suffering of keeping the temperatures on myself. So the aim right now is to make an easy kit which heats and stirrs the chemicals to a desired temperature both before and during the chemical process and to automate the rotation/agitation of the film in the tank.

During my research I came across your great website and ever since then I really want to include the ‘daylight tank’ technology into my project.

I would be more then thankful if you could spare some minutes to help me with a few quastion.

1) The daylight tanks have disappeared for quite a long time and have quite a bad reputation among some users. Do you think this is due to the lack of the slide film possibilities at that time? Or because it can only load one film at the time? Or maybe ecause of ‘less contrasty/sharp’ image results? Or because of some difficulties while developing colour negatives?

2) As I am completely rebuilding the tank I thought of maybe adding the option to load two 35mm film at the same time or even make a universal tank for both 35 and 120mm films. Do you think that would be a big point for people considering switching from JOBO to a daylight tank solution?

3) Would you still consider the Rondinax 60 a good solution to go for although of a lot of complaints about films not working or would you recommend to stick to JOBO tanks instead for 120mm?

Quite a lot of questions but I do hope that you could give me some insights before I will take a wrong turn.

Thank you already for your time and effort.

Have a nice evening and all the best