> Hmmm... I was not aware of any 1:1 "adapter" for any Pentax 100mm > macro. (But "I was not aware" does not preclude the actual > existence of same - <g>.) Are you sure it's not actually a TC or an > extension tube? (I think a 50mm - I'm not sure of the exact length > - extension tube is typically used to give 1:1 with some of the > 100mm macros.) What markings (if any) does it have? Does it have > any internal glass (as opposed to a "hollow" extension tube)?
Wouldn't an extension tube have to give enough extension to extend the lens to 100mm (in this case)? I'm under the impression that it takes enough extension to equal the focal length to get 1:1. Or something like that :-) Bill - 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 .
