>Can someone explain why one must pay such a penalty in filter size when >buying a short or mid-length constant-aperture zoom?
I do not know, but I "guess" it was due to the difficulties to correct the distortion and light-fall-off at the wide end. regards, Alan Chan _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
