Archived posting to the Leica Users Group, 2001/01/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thank you Erwin for the first three installments. They put into well backed up word many of those things I have had a feeling were true but which I could not really prove. Like a tabular iso 100 film being better in everyday use than TP or APX 25 as one gains more in reduced cameras shake due to increased speed than one loses in grain and resolution. With a tripod it is different, but only maybe. Also, I liked the introduction of the terms 'law of diminshing returns' into this subject field. And your stressing that user capabilitity may be the limiting factor. Luckily enough you also said that one needs to use high quality lenses to get the best out of the system. After all I have a 21mm ASPH demo on order with my dealer's. There has been much lamenting recently about APX 25 no longer being manufactured. I have not been able to understand why people should be so upset about this, but obviously the Agfa people came to the same conclusion as you Erwin. Talking about manufacturers. Réponses Photo issue 104 had a film survey and they listed all the resolution figures as given by the manufacturers, except for Ilford film as Ilford does not publish such figures. Do you know why Ilford do not publish these figures, and can they be obtained elsewhere? As a user of Ilford films, it seems to me they have nothing to hide. Delta 100 is as good as they come. Could you let me have the name and address of the supplier of the test charts you used? My only problem with your article is that I can not find FX39 in Germany, and have not been able to find a mail order supplier in the UK who is willing to ship it to Germany. On the other hand there is a relatively new developer available from the inventor/mixer/packer and also from Photographer's Formulae in the US. Look at www.barry-thornton.com if you like. His site has a lot of developer/film information including formulae for developers - but not the ones he sells though. I have ordered his two bath formula Xactol, which can also be used as a one bath developer. Used so it is the sharpest developer on the marked, if one believes Barry. It is a tanning developer and sounds interesting. I placed my order a few days ago and will post my (very simple) test results as soon as I get the stuff. The test films (Delta 100 and HP5+) have already been exposed. Best wishes for the new year to you Erwin and to all readers of this. Chris - -- Christer Almqvist D-20255 Hamburg, Germany and/or F-50590 Regnéville-sur-Mer, France