Archived posting to the Leica Users Group, 2009/04/26

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Subject: [Leica] Elmarit 21mm color fringing
From: hopsternew at gmail.com (Geoff Hopkinson)
Date: Mon, 27 Apr 2009 09:16:15 +1000
References: <9c5fdcc60fec7049ccf077264479de6d@cshore.com> <C61A56E4.4D65B%mark@rabinergroup.com>

Mark as I understand it we were talking about 3 possible issues, which were:
Light fall off towards the edges of the frame The pre ASPH. Elmarit shows
2.5 stops vignetting, the same as the ASPH. version
The Angulons look to have more than that and further, being non-retro focus
have deeply intruding rear elements. I looked at some and was not confident
that they would be usable on the M8 at all. I did not try it.
Possible colour fringing (from chromatic aberration???).  Doug Herr tells us
that this is more an issue with teles.
A cyan corner effect. This can occur with any wide angle on the M8 when the
UV/IR filter is used. Equally applicable to all of the wider lenses.
When the lens is coded and the camera set to detect the lens with filter,
the camera firmware corrects this.
.
2009/4/27 Mark Rabiner <mark at rabinergroup.com>

> Curious if the current ASPH version of the Elmarit 21mm has had any of
> these
> issues.
>
> The lens in question the pre APSH 21 is the single most hotly critized
> widely regarded DOGS in the history of any Leica M lineup. An
> embarrassment.
> You'd use the SA 3.4 that was until the ASPH came out which was widely
> regarded as a landmark optic.
>
> With the excepted of two maybe one people on the LUG who swear by their pre
> apshs have we seen images? This comes up on the LUG every 3 years.
>
> I'd use a Cosina Voigtl?nder 21 WAY before I'd use the pre apsh Elmarit 21.
>
> Mark William Rabiner
>
>
>
>
>
>
> _______________________________________________
> Leica Users Group.
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>



-- 
Cheers
Geoff
'Breathe In, Breathe Out, Move On'
http://gallery.leica-users.org/v/gh/a/
http://www.pbase.com/hoppyman


Replies: Reply from don.dory at gmail.com (Don Dory) ([Leica] Elmarit 21mm color fringing)
In reply to: Message from dnygr at cshore.com (Douglas Nygren) ([Leica] Elarmit 21mm colof fringing)
Message from mark at rabinergroup.com (Mark Rabiner) ([Leica] Elmarit 21mm color fringing)