After painful researches at last I release a ThinFilm texmap plugin stable version.
Plugin is free for personal or commercial use. Download: http://www.sigerstudio.eu/shop/3ds-max/sigertexmap-thinfilm/
Fantastic, thanks for making it free!
Nice ,
not many cases where it can be used, but it is good addition to corona renderer.
Maybe sooner or later, someone will make the dispersion like this 
btw, strange but looks like doesn’t working (in max 2014)
Looks likes it is almost Christmas 
Yes, the plugin (absence of mind) was compiled from older test back-up project and not fixed color calculation alpha channel. Uploaded the fixed version. Excuse for inconvenience.
Nice to see this feature coming finally ( Was waiting for it long time ago for a bug scene ) through such an easy nicely done plugin, well done and thanks a lot !
What version you install? Old 1.0.0 have a bug with color calculation alpha channel, please re-download newer version (1.0.1 - fixed for Corona).
1.0.1 works like a charm - thanks !
It works perfectly fine now. Sorry. 
Find some time to play with this plugin. Love it. One little thing i’d like to be improved, is mapable IOR.Film. Is it possible?
Map for Film IOR param? It’s possible, but why? When you use thickness map (usual noise or similar), it distort map thickness.
Yes, but somehow i find that variable film IOR gives more pleasant result, than thickness alone. But it may be due to the fact that i tested your plugin only briefly. I’ll give it another try.
If map will change the Film IOR parameter, it will already mean that film material not uniform - f. e., soap with chitin inclusion But is possible to implement, I will think about it in future.
BTW, what is the proper way to use Thin Film. Plug it in refl color and adjust fresnel IOR in material or set fresnel IOR to 999 and adjust film IOR in ThinFilm map?
If need clear ThinFilm coat - use only ThinFilm plugin into reflection color (always disable material IOR param (999) - plugin calculates own fresnel curve). When need slightly film coated effect - best way to use Blend material or mixing (composite) maps. Here almost endless variation In future (soon) I will make some tutorials for ThinFilm and ComplexFresnel usage.
ThinFilm plugin updated (v.1.0.2 - minor bug fixes).
ThinFilm plugin updated (v.1.0.3 - added standard Output dialog).
Only after seeing this now, thanks very much.
One issue I’m having is having to use really low values in the nm amount. Like 0.01 min and 0.02 in max with noise as map in this example at value 5. Whereas this should be 500000 / 1000000. The limit you have here is 3000.
I wanted have .5mm to 1mm.
BTW> My max is setup with cm as system units.
Happy with the results though. :]
Film thickness value not depends on system units - it’s internal float values and specifies film thickness in nanometers.
http://vignette1.wikia.nocookie.net/soapbubble/images/1/11/The-colors-of-a-soap-film-upto-800nm.png/revision/latest?cb=20130914182533
P. S. In most cases I’m using units cm. Only for very small models (f. e., jewelry, etc…) - mm, very large exterior - m., etc…
