Dear Alan, other 24/2.8 owners, et al, Thanks for the message about the impossibility of mounting the HN-1 hood plus a filter on the 24/2.8 - disappointing but not wholly unexpected. In your discussions, did anyone propose a way of mounting a lens hood (presumably not an HN-1) plus filter (L37C or circ. polariser) on a 24/2.8. Best regards, Keith