Archived posting to the Leica Users Group, 2001/01/07

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: Re: [Leica] 90mm recommendations: Apo-Lanthar question
From: Akhil Lal <akhil.lal@bcc.cuny.edu>
Date: Sun, 07 Jan 2001 10:02:37 -0500
References: <B67D5C82.3E88%howard.390@osu.edu>

NO, the yellow cast just means that transmission in the yellow band 
(ca. 600 nm) is higher than in other parts of the visible spectrum. It
has nothing to do with the degree of correction for chromatic
abberations.

Regards,
Akhil

Martin Howard wrote:
> 
> I still maintain that a camera lens that provides a yellow cast of
> everything it photographs has "chromatic aberrations".  What the hell else
> would you call non-uniform colour reproduction?
> 
> M.
> 
> --
> Martin Howard                | "OK! Let's get one thing straight. I'm in
> Visiting Scholar, CSEL, OSU  | charge of the CPU for the next 40 milli-
> email: howard.390@osu.edu    | seconds!"
> www: http://mvhoward.i.am/   | -- comment in the Space Shuttle IPL code
>                              +--------------------------------------------

In reply to: Message from Martin Howard <howard.390@osu.edu> (Re: [Leica] 90mm recommendations: Apo-Lanthar question)