Archived posting to the Leica Users Group, 2002/02/18

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Subject: Re: [Leica] need input on Kobalux lens
From: "olivier nguyen" <oliviertnguyen@hotmail.com>
Date: Mon, 18 Feb 2002 20:02:45 -0500

Hi
I did not use any filter at all in the lens.  can someone here post your 
picture up so i can see how it is ?  i mean the full frame one without crop.
thank you all for answer me
Olivier


>From: Guy Bennett <gbennett@lainet.com>
>Reply-To: leica-users@mejac.palo-alto.ca.us
>To: leica-users@mejac.palo-alto.ca.us
>Subject: Re: [Leica] need input on Kobalux lens
>Date: Mon, 18 Feb 2002 16:07:57 -0800
>
> >Hi Olivier -
> >Normally, vignetting is present in superwide-angle lenses.
> >It is *not normal* in the newest Kobalux 21mm (I can't speak for the 
>older
> >ones Adorama sells, both because it has a different optical formula and
> >because I don't have one), and that's part of why the front element is so
> >big.  I can send you the full-frame scans if desired.
> >See ourworld.compuserve.com/homepages/dkieltyka/Kobalux21.htm for a
> >discussion of the extremely low level of vignetting in the new lenses.
> >If you use a Tiffen or B+W filter even the new ones will vignette.  Stick 
>to
> >Hoya or a thin-ring B+W.
> >Dante
>
>
>If the vignetting was due to your filter, you might also consider switching
>to Heliopan, who mount all of their filters in slim mounts.
>
>Guy
>
>
>
>
> >> Hi everyone,
> >> I just test a roll of film on my leica M6 TTL with Kobalux 21mm lens.  
>I
> >> check the neg. and it look like alot of light fall off at the edge of 
>neg.
> >> both side of negative not top and bottom.  does anyone has this problem 
>?  I
> >> check with kobalux website and also picture at Dante Stella website and
> >> those pictures did not seem to have light fall off.  these pictures 
>might be
> >> crop out .
> >> can someone who use kobalux please confirm this matter for me.  is this
> >> light fall off usually happen to wide angle lens such as 24mm down?
> >> Olivier
> >>
> >>
> >>
> >> --
> >> To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html
> >
> >------------
> >Dante Stella
> >http://www.dantestella.com
> >
> >--
> >To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html
>
>--
>To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html




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