Archived posting to the Leica Users Group, 2006/11/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>Date: Thu, 9 Nov 2006 16:09:25 +1100 (EST) >From: "Alastair Firkin" <firkin@ncable.net.au> >Subject: Re: [Leica] Autumn Color >>> I bought an old, non coupled 135mm Elmar for $ 25.00. By taking out the >>> front set of elements, then unscrewing the rear one of these >>> slightly, and >>> putting back the now separated set, I got spherical aberration that >>> varies >>> with the f stop. > >I can't wait to try this at home: perhaps my nice new summicron ;-) > >Thanks for sharing these techniques > >Cheers ................................................................................ I see the smiley, but I don't think it would work anyway. This modification has to be done on a Tessar type lens. The Summicron is a Gauss derived design. Alan ................................................................................ >Date: Wed, 8 Nov 2006 23:22:04 -0000 >From: "GeeBee" <graham@geebeespaw.freeserve.co.uk> >Subject: Re: [SPAM] [Leica] Autumn Color >Reading your email I was thinking 'what could be worth all this trouble?' >but the answer was in the result, particularly 'berries' and ' twig' which >illustrate a beautiful effect. I don't know whether that 'look' can be >created post process but I hope not. Your endeavour and skill deserves >exclusivity. Great shots! >--Graham ............................................................................... Graham, Thank you very much. Adjusting the lens was hardly any trouble (and can be changed back any time) but finding the right combinations of tubes and adapters was the tricky part. There I got lucky. At a collectible camera show, the man next to me held up the Leitz focusing tube and asked one of the vendors if he wanted to buy it. I realized it was just what I needed and bought it for $20.00. This joins to a Pentax screw extension tube via a LTM to Pentax adapter, meaning that I can do close-ups by adding as many tubes as needed, but normally the set-up focuses from 1.5 meters to infinity. Keep those English landscapes coming. I've been to Britain twice, and love reminders of the great times I had. The last time, I might have passed near where you are, riding a Honda VFR750 from Cambridge to Liverpool, on my way to the Isle of Man TT. Alan Alan Magayne-Roshak Senior Photographer Photo Services Univ. of Wis.- Milwaukee Information & Media Technologies amr3@uwm.edu http://gallery.leica-users.org/v/Alan+Magayne-Roshak/