Hi, on kmp.bdimitrov.de I saw the specs of the 200 f2.5 lens. It says that the filter ring is 77mm, but this means that the lens cannot be f2.5, as that would mean a minimum 80mm filter ring!
Can anyone explain? BTW. Isn't it save to have some margin between the filter ring and what is calculated by dividing the focal length and the aperture. I'm thinking about robustness against vignetting, especially when using a filter. Frank - 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 .
