what are the best settings in Moi3D & Cinema4D -> that Import/Export have the equal Size?

 From:  Michael Gibson
7865.2 In reply to 7865.1 
Hi Lordfox - unfortunately the OBJ format does not have any mechanism in it to label what unit system was used for creating it, so there isn't any way for your unit setting to be preserved in the generated OBJ file.

I seem to remember that applying a scaling factor of 0.01 to OBJ exports helped for transfer into Cinema4D. You can set that scale factor to be applied to OBJ exports from MoI by the setting under Options > Import/Export > OBJ options > "Scale factor". Put in 0.01 in that field to have that scaling applied to your export.

Or maybe I've got it reversed and you need to put in 100 in there, try that too.

I think the issue was that Cinema4D automatically scaled stuff up or down by a factor of 100 and so you need to reverse that.

- Michael