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Re: [OM] IMG: Africa

Subject: Re: [OM] IMG: Africa
From: Tina Manley <images@xxxxxxxxxxxxx>
Date: Thu, 26 Sep 2013 18:20:14 -0400
Thanks, Mike.  That helps a lot.  I do really like that lens but haven't
used it often.  It's big!
That was a sweet looking lion but I didn't get too close to him!  He sat on
a hill all day while the females hunted ;-)

Tina


On Thu, Sep 26, 2013 at 6:11 PM, <usher99@xxxxxxx> wrote:

> > I don't know what causes the blue halo around the trees behind Leo.
> Any
> > ideas? Or how to fix it?
>
> Looks like classic longitudinal chromatic aberration. A bit of quick
> research show this lens does have this especially wide open. Was that
> the case? Quite nice performance as the 400mm Leica Telyt-R f/6.8
> was designed in 1968 though produced until 1994. It is an interesting
> design with a long tube and only one 2-element achromat lens group in
> the very front. Remarkable it is as good as it is though even cooke
> triplet lenses (designed in 1893) with more exotic modern glass can be
> excellent. I think Andrew has one. Minor modification with aspheric
> elements are said to be used in cell phone cams today.
>
> Fix??? Not sure how desat would look but greenish like the foliage
> should  look OK, IMO. I wonder if the color picker in PS could select
> it well enough and tone down the blue channel. Undoubtedly many ways to
> do  this.
> Seems you have the same talent with critters as with people.  Doesn't
> seem fair.  ;-)
>
> Mike
> --
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>


-- 
Tina Manley
http:// <http://tina-manley.artistwebsites.com/>www.tinamanley.com
-- 
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