@Vitaliy_Kiselev well I'm a bit confused about these mounts as is, but I was looking to get a regular nikon 80-200 manual lens for my gh2, but then I ran accross the Fujinon lenses and now I'm really interested in seeing how these could work, but I know the B4 Fujinon lenses are more popular so they are more expensive, but if you look at these:

http://www.ebay.com/itm/330716086862?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

that is a well kept lens in really good shape but the problem is that is not a B4 lens, so there is no adapter that I know of, I believe these are bayonet mount lenses 2/3, and once an adaptor comes they are gonna become popular too.

Another option I have considered is this one that you mentioned:

http://gfotostore.com/catalog/view/57.html

but I'm afraid it may not fit.

B4 and Bayonet are very similar but the reason I'm looking for a Bayonet adapter is because those lenses are cheaper and look in much better shape too.

Sorry VK do you know what type of mount is the lens on the link? is that a B4 mount?

They all look to similar

The first letter specifies the format.

Canon:

• J=2/3" (can be B4, B3, or C mount)
• H=1/2"
• T=1/3"

Fujinon:

• A=2/3" Bayonet B4/B3
• S=1/2" Bayonet
• yV=1/3" C mount
• DV=1/2" C mount
• C=1" C" mount
• TH=1/3" Bayonet

Thanks VK