Archived posting to the Leica Users Group, 2001/05/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]APO, I'm not sure how to expand the acronym, it might be "apochromatic," means that the lens has been correct to have the same focal length at three wave lengths. Achromatic means that the lens has the same focal length at only two wave lengths. Herb Reply to------------------------------------------------ Date: Sat, 12 May 2001 16:09:36 +0800 From: apbbeijing <apbbeijing@yahoo.com> Subject: Re: [Leica] Re: Opinions on the Telyt-R 350mm 4.8 lens Message-ID: <B7230EF1.DF48%apbbeijing@yahoo.com> References: > Contains APO glass in some of its elements. What is APO glass? Rgds Adrian - -- Herbert Kanner kanner@acm.org 650-326-8204