Different models of Sinar Shutter

[kanishka]

Can anyone explain me which are the different types of Sinar Shutters?
In ebay I only find the Sinar Copal f5.6 Auto Aperture model but I know there are others. I want to use it with a Sinar P to put barrel lenses.
Which is the best model for this configuration? All have the same speeds?

Thanks!

[Ari]

Try this: http://www.largeformatphotography.info/forum/showthread.php?20606-Sinar-Shutter-f-4-versus-f-5-6-and-Cables&highlight=sinar+shutter

[kanishka]

Thanks Ari!