[LRflex] Re: Intro - yab

Hello Bill/Yab
Nice to see your pages. In fact you have set those with a great care and taste. An exmaple for me (wink).
As for the Elmarit 24, I have tried a few pix for CA with Paint shop pro XI, my home sofie: Nada, Rien, Que Dalle!
In fact what you mention could be some distorsions in the corners. In fact, I have noticed that over f5.6, it tends to do that. But then it is not too scientific.
In fact, I face some light measuring probs with the 24mm, the rear element is too small in front of the lightmeter, especially when stopped down. Hey, it no surprise :) 

Cheers.

---------------------------------
Xavier F. BILLE
Maisons-Alfort - France.






From: <holtzw@xxxxxxxxxxx>
Reply-To: leicareflex@xxxxxxxxxxxxx
To: "leicareflex: freelists.org" <leicareflex@xxxxxxxxxxxxx>
Subject: [LRflex] Intro - yab
Date: Sun, 29 Jul 2007 10:19:52 -0700

Everyone,
Before adding to the thread Xavier Bille started on the 24 Elmarit, I probably should have introduced myself. My name is Bill Holtz; yab, yet another Bill. I am from St Louis Mo and have belonged to this forum for some time. I seldom post but I really enjoy the international flavor of this forum and I get inspiration from the posted photos; you guys do good work.
Some time back I contacted David Young and asked him for info on a Nikon scanner he had mention in a post. He kindly replied and requested I show some results. I did get the scanner and I thank David very much for the information and his encouragement. I am still on a learning curve as my results will show, but the scanner was just what I was looking for. Then when I replied to Xavierâ??s post on the 24 Elmarit, he too requested that I post examples of what I was getting at. So, I have placed a couple of albums on my web site www.williamholtz.com in reply. You will note that my site is intended only to share photos between family and friends. I am a bit more amateur than most of you; read that to mean you wonâ??t confuse my bird shots with those from Doug Herr.
Xavier, as added explanation, I realized problems using the 24 Elmarit on my 20D when I tried to make a stitched pano (I failed miserably). When selecting tie points at full resolution, features on the edge of one frame would be toward the center of the adjacent frame. The problem was obvious. What I called CA is probably not Chromatic Aberration inherent in the 24 Elmarit but, as Keith Longmore explains very well, induced by using a wide angle lens not designed for a digital sensor. I show two examples of this in the first two rows of the album. In spite of this I do still use the 24 on my 20D as shown in the bottom three rows. It is the widest lens I have, it is good for street photos (I think its performance is better in the close range), and I use it for snap shots through a window of a moving vehicle (where optical quality is not important). 

Bill

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