Bill, You're not going to modify that lens. You might have to modify a lensboard to fit it. The question is whether you're enlarging 8x10 negatives. This is a very 'long' lens. Even on my 8x10 enlarger I only use a 240mm for 8x10 negs. I'm not sure why you would want this for a B22. Bob Younger On Thu, Oct 11, 2012 at 7:19 PM, Bill Stephenson <photographica@xxxxxxxxxxx>wrote: > How hard would it be to modify that for my Omega B22? <g> > > -Bill > > >