I have recently begun a body of work using liquid emulsion to make pinhole photographs.

As I usually use sheet film for pinhole photographs I am not sure about the reciprocity characteristics of liquid emulsion or even silver gelatine paper for that matter.

Can anyone recommend a general rule of thumb to help me with a starting point? Obviously it will take some testing but if anyone has any advice I would be quite grateful.

At the moment I am using a bit of old Foma emulsion I had left over but I also have some relatively new Maco emulsion. I'm also going to give AJ-12 a go at some stage.

Thanks alot,