the DA 16-45 works the way yours does. no other Pentax zoom i tried works that way. the Sigma 24-70/2.8 gets longer when zooming wider.
Herb.... ----- Original Message ----- From: "Cotty" <[EMAIL PROTECTED]> To: "pentax list" <[EMAIL PROTECTED]> Sent: Saturday, June 12, 2004 11:34 AM Subject: Zoom lens shading > Is this activity engineered to provide a dynamic lens hood depth? Or is > it an engineering necessity that just so happens to provide good lens > shading through the relevant movement of the optics? Or both?
