Archived posting to the Leica Users Group, 2014/10/30

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

Subject: [Leica] Anyone have a line on a Kobalux 21mm?
From: dstella1 at ameritech.net (Dante Stella)
Date: Thu, 30 Oct 2014 21:22:15 -0400
References: <5C1D9DCD-657E-463A-B0CE-09078ADC4417@ameritech.net> <CAJ3Pgh7Lsw4rDgwhDBcV93a6YFA021g5EdQm_fwFZ+HSO+Nx+g@mail.gmail.com>

Paul -

If you see one in person, what appears clear is that the nodal point is more 
than 21mm from the film plane. I don't think it's very retrofocal, and the 
rear element does sit very close to the film plane (~12mm). It is indeed the 
one that Adorma sold, just under a different name (local importers had it 
rebranded).

Best,
Dante

On Oct 30, 2014, at 1:46 PM, Paul Roark wrote:

> The image and description on https://www.cameraquest.com/koba21.htm suggest
> it may be a lot like the C-Biogon 4.5.  I'd be curious what the in-person
> comparison is.  The cameraquest comment that it is "retrofocus" leaves me
> wondering about their definition.  It's all relative.  Very few optics are
> strictly symmetrical.
> 
> At one time I think it was Adorama also had a little 21mm that looked like
> this basic design and tested well at Modern Photo.
> 
> Alas, with my Sony I thing the quest for small and good ray angle are going
> to force lots of aspherics and larger size than the old compact designs.
> We'll see what Zeiss and Sony can come up with.  For now, the WATE reigns
> supreme for the Sony superwide end.
> 
> Good luck finding one of these.
> 
> Paul
> www.PaulRoark.com
> 
> On Tue, Oct 28, 2014 at 7:17 PM, Dante Stella <dstella1 at ameritech.net>
> wrote:
> 
>> Hi -
>> 
>> I have been on the hunt for a 21mm Kobalux (or Avenon Millenium or MC)
>> lens. Color is not important; I am looking for one with 8 aperture blades
>> and the 0.8mm close focus. If I sold you one back in the day when I was
>> importing them, and you're finding it underutilized, I'll make it worth
>> your while to sell it back (those would be black body with chrome fronts
>> mostly - but a couple of silver ones were in there). I'll look at a bare
>> lens up to a set.
>> 
>> This is more sentimental than anything; I can tell you straight up that
>> the Konica 21-35mm and Zeiss 21/4,5 I replaced it with have higher
>> performance (as would befit what they cost - which was double or
>> quadruple). And for all I know, the Kobalux may have color shift issues on
>> an M typ 240. But nostalgia?
>> 
>> So even if you have a lead somewhere, it would be greatly appreciated.
>> 
>> Thanks,
>> Dante
>> 
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



In reply to: Message from dstella1 at ameritech.net (Dante Stella) ([Leica] Anyone have a line on a Kobalux 21mm?)
Message from roark.paul at gmail.com (Paul Roark) ([Leica] Anyone have a line on a Kobalux 21mm?)