I bought a used but mint 300mm f4 AF/ED at a local camera show here in North Jersey. This lens did not have a filter in the 39mm drawer when I bought it. . . . Thanks to everyone who responded to my post re: my filter problem. From everyone's feedback I can deduce the following: 1) The 300mm F4 is supplied with two filter drawers. One screw in and one for gel filters. 2) My used lens only has the gel drawer. 3) B&H Photo could not supply me with a replacement Nikon drawer (per Henry Posner) 4) Kirk photo markets their replacement filter drawer for $109 (a little steep I think) 5) There is a mixed opinion as to whether a filter is required at all. 6) Based on #5 above I am vacillating about buying #4 above. 7) I don't really need my F5 (see comment below) Thanks again for everyone's advice and real world, hands-on opinions. It's what makes this list of such value. And BTW, I'm one of those F5 owners who absolutely doesn't "need" it. Need is not the issue. I held it, I fondled it. It felt good, it looked good. I can afford it - so I own it. If anyone has a problem with that they can go crap in their hats! Take your opinions to alt.psycho.get_a_life! Your arguments on this topic could be directed at anyone who owns a vehicle other than a Ford escort and is pure nonsense. Lets keep this list objective and focused on photographic issues pertaining to Nikon products and stop chewing up bandwidth with subjective babble. (I tried really hard to refrain but I just couldn't resist!) Pete Treible