[rollei_list] Re: OT: Uncoated Sonnar 1.5/50 1937 lens
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Mon, 12 Apr 2010 20:07:30 -0700
----- Original Message -----
From: "CarlosMFreaza" <cmfreaza@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Monday, April 12, 2010 4:40 PM
Subject: [rollei_list] OT: Uncoated Sonnar 1.5/50 1937 lens
The Contax II is a pleasure to use considering it's a
camera from
1937. I tried the second roll with this camera and the
uncoated Sonnar
1.5/50, under certain light conditions there is no doubt
the lens is
prone to flare and the diference with a coated or
multicoated lens is
perceptible of course. It's also perceptible that
coated/multicoated
lenses in general produce more "pure" colors someway, it
does not mean
colors by uncoated Sonnar are not very pleasant, this
Sonnar is
excellent about sharpness and contrast,these are to
samples, the first
one is a nocturnal shot taken with the camera on a rail,
4sec f 8, the
other a cityscape, both taken with Kodacolor color
negative film ISO
400:
http://www.flickr.com/photos/itarfoto/4515984730/
http://www.flickr.com/photos/itarfoto/4515983220/
Carlos
---
Rollei List
Both interesting pictures. The building is very sharp,
at least over the web. The harbor is remarkable. No real
flare despite the lights in the background. Where did the
lights on the boats come from? Must have been floodlighting.
I would not expect much flare from a Sonnar, there are
only six glass-air surfaces, the same as for a Tessar or
Triplet. While coating certainly improves these lenses the
performance is very good without any. Coating, especially
multiple coating does improve color purity because it
prevents light of other colors or just white light from
being scattered into the colored areas.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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