i have done only a few tests where i compared the two lenses side by side and then, only wide open performance under cloudy bright skies and focused moderately close, at about 30 feet. under those conditions, the A* 400 f2.8 is slightly sharper and slightly more contrasty. the sharpness may be a consequence of a brighter viewfinder and the resulting better ability to manual focus on the *istD screen. the Pentax L extenders on the A* are slightly sharper than the Sigma extenders on the FA* lens. BTW, the swan is a female mute swan. did you notice the turtle on the side of the nest? a whimsical caption would be "Mom?"
Herb.... ----- Original Message ----- From: "Mark Cassino" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, April 19, 2004 9:54 PM Subject: RE: birds and turtles > Nice shots, Herb. My favorites are the reflected goose and sleeping > Trumpeter (?) swan. > > How does the A* 400 compare to the FA* 400?
