Archived posting to the Leica Users Group, 2002/09/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Since Photokina is here, I have made a temporary page (temporary until either (a) I figure out how to link the Zeiss URLs directly; (b) I get a formal ok from Zeiss to host them locally; or (c) until Sunday night): http://www.dantestella.com/technical2.html in which I have linked and reproduced (look to the far right column) the following articles written by Carl Zeiss in Germany. These should give you some basic information on optics that should help you decipher the reports that come back, when and if they come back. Predictably, these have a Zeiss spin, but they are well written and understandable to the lay person. DO NOT PRESS "QUIT" AT THE BOTTOM OF EACH ARTICLE, BECAUSE YOU WILL LOSE THE WINDOW. Achromat, Apochromat, Superachromat - What is the Difference? - -- relevant to the 90/3.5 Apo-Lanthar and 90/2 Apo-Summicron chrome Depth of field – An insider's look behind the scenes - -- the little scales on your lenses How digital one-shot cameras perceive color - -- why the Foveon chip will be revolutionary if it works How do Zeiss T* and Rollei HFT compare? - -- relevant to the Rollei RF and its lenses How to determine the resolution actually reached in a photograph a practial example - -- general interest Is rollfilm 220 better than 120 in terms of film flatness? - -- for Super Ikonta fetishists inter alia Resolution of camera lenses where are the limits – and why? - -- general interest 10 Steps to success in high performance photography - -- imaging chain considerations Why Carl Zeiss lenses for Contax are made in Japan - -- more on the history of Zeiss in the post-Ikon era Regards Dante - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html