my Pentax A* 400/2.8 is about the same weight, although it has "only" a 145mm front filter thread. Mark Cassino has one too. there are things you can easily do with it that are just so much more difficult with a 400/5.6. when it comes to publication quality small bird photography, size (focal length + maximum aperture) matters as much as skill.
Herb.... ----- Original Message ----- From: "Tim Sherburne" <[EMAIL PROTECTED]> To: "Pentax Discussion List" <[EMAIL PROTECTED]> Sent: Wednesday, June 30, 2004 5:10 PM Subject: Re: Something big > > One of the many interesting articles at Luminous Landscape addresses the > practical obstacles when using this combination: > > <http://luminous-landscape.com/reviews/lenses/600mm.shtml>
