[rollei_list] Re: OT: Leica vs. Zeiss
- From: Eric Goldstein <egoldste@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 18 Nov 2009 08:22:20 -0500
As Richard explained, it is entirely possible that a very well
corrected achromat would show better color correction than an APO
lens. Though the chromatic curve of the achromat would only show two
points of perfect correction, it may "hug the line" much closer and
show less deviation over-all...
Eric Goldstein
--
On Wed, Nov 18, 2009 at 12:54 AM, Frank Dernie
<Frank.Dernie@xxxxxxxxxxxxxx> wrote:
> Actually Apo is a typo in the case of this lens as such an item does not
> exist. The latest 50mm f1.4 is Aspherical not apo. It is by a long way the
> best f1.4 lens I have used wide open, and I have used a few. The new-Zeiss 50
> f1.5 sonnar is reported to be a retro lens and is soft and suitable for
> portraits wide open, though I have not used one personally. Only 2 Leica M
> lenses are marked Apo, the latest 90mm f2 and 135mm f3.4. I would be prepared
> to bet five bob that they really are apo...
> The Leica lenses I have, which is quite a few, may not all be apo, whether
> marked thus or not, but they show noticeably less chromatic fringing than
> most of the fast lenses I have from Nikon or Canon. FWIW.
> Frank
---
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