The portrait in question is on page 40 of Mr. Matanle's 'Collecting and Using Classic Cameras' and looks to me like it was taken outside on an overcast day at around f5.6. Certainly not wide open, because there is a good 50cm of depth of field...
-------------------------------------------------- From: "Eric Goldstein" <egoldste@xxxxxxxxx> Sent: Friday, December 11, 2009 5:59 PM To: <rollei_list@xxxxxxxxxxxxx> Subject: [rollei_list] Re: Hello again, and a lens question
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 1974to 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 --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list--- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list
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