[rollei_list] Re: Hello again, and a lens question

  • From: Eric Goldstein <egoldste@xxxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Fri, 11 Dec 2009 20:59:44 -0500

The uncoated Sonnar 50/1/5 is a great lens with great character, but
it is far from sharp wide open and away from the center.


Eric Goldstein



On Fri, Dec 11, 2009 at 8:49 PM, CarlosMFreaza <cmfreaza@xxxxxxxxx> wrote:
> 2009/12/11 Stephen Attaway >
> To quote from Ivor Matanle: "The portrait of Mr Robert Cox was taken in 1974
>> to mark his fifty years of service to his company ... with a 50mm f1.5
>> uncoated Zeiss Sonnar, and shows perfectly the curious characteristic of
>> defined yet slightly unsharp detail that makes the optical quality of
>> classic lenses so attractive."
>
> I tend to disagree with Ivor Matanle, the uncoated Zeiss Sonnar 1.5/50
> was designed to be a very sharp lens, in general lens designers look
> for lenses to produce an image as close to the real image as possible,
> it means aberrations free, sharp and the best  micro-contrast, except
> lenses for special purposes. It's true some old lenses produce
> pleasant images thanks to some no well corrected aberrations (I think
> about portraits specially), but they couldn't be the standard to
> obtain a good image.
>
> This is a sample about a snapshot "portrait" taken with the uncoated
> Contax II Sonnar 1.5/50 _wide open_ f1.5 and 1/1250 sec shutter speed
> , I think the in focus areas show very good detail for a 71 years old
> uncoated lens despite a scanner not so good for 35mm :
> http://www.flickr.com/photos/itarfoto/3199809044/
>
> Carlos
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