FH100M2    For More Than 16mm Wide Angel Lens,use with 82mm CPL    
FH100M2B   For More Than 16mm Wide Angel Lens,use with 95mm CPL    
FH100M2V1  For VM 15mm / f 4.5III    
FH100M2V2  For VM21mm f /1.8    
FH100M2V3  For VM10mm f/5.6    
FH100M2V4  For VM 12mm f /5.6III