I have scanned the photographs about the "Resolving power and contrast", Zeiss Info 51 and uploaded them to one of my blogs, they are four photographs about the king Henry II window (vitreaux)in the Aachen cathedral, the images look identical regarding the original in the article because they received identical scanning process, anyway there is an effect to appreciate even more the contrast significance for the image quality approaching your eyes to the images that can be see better on the paper (see the article partial transcription in my blog). I only copied the part about the images comparison, the article is larger with technical diagrams and specific technical info about lens contrast transference etc., but I think with the photographs are enough to understand the authors point of view,; you can enlarge the images clicking on them : http://dobleobjetivo.blogspot.com/ All the best Carlos Los referentes más importantes en compra/ venta de autos se juntaron: Demotores y Yahoo! Ahora comprar o vender tu auto es más fácil. Vistá ar.autos.yahoo.com/ --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list