On 14 Mar 2004 at 13:51, Herb Chong wrote: > i believe these are Song Sparrows, common throughout the US and Canada. they are > very variable so the birds markings don't exactly match any of the recognition > pictures i have, but they are close. > > http://users.bestweb.net/~hchong/temp/ > > taken on the *istD with a Sigma 50-500 and Sigma 2X extender at 500mm wide > open and then cropped to the 50% center portion. equivalent FOV to a 1500mm lens > on a 35mm film body. useful Hi Herb,
It's sharp enough to be usefull in the centre but the strange bokeh and deterioration of contrast towards the edges is distracting, what did it look beyond the area that we can see? Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
