Leitz the summicron objective 5cm camera lens info. Available to purchase for immediate download. Below is an extract from the manual converted to text for a quick impression on the content. Leitz the summicron objective 5cm camera lens infoLeitz
the sectional drawing shows
the first if? lElCA lens as a 6
normal symmetrical canstnietion.
[I
THE SUM MAR
The first high-speed LEICA lens with the large
aperture of it? was the 5 cm SUMMAR It was
a symmetrical lens with two simsle converging
elements outside. and two cemented components
inside. This system was chosen because it is
particularly suitable fa! achievirg high speed
with a relatively large angle of view, Yhe prin-
ciple ol the symmetrical type of construction
afiers unusually favourable cancitions lor the
correction at aberrations ihat apslies especially
to the extensive elimination of chromatic faults-
Although developed some twenty years ago, the
SUMMAR is therefore still high!) valued by its
owners and used with great success Antivtefleclion
coating, as generally applied tc lens surfaces
nowadays, will further enhance tl'e value of the
SUMMAR. Symmetrical type letses especially
give much more brilliant images after coatingTo meet the demands at colour
photography for maximum freedom
tram vignetting, the SUMMlTAR op~
pearecl as a development at the
SUMMAR. The new lens featured an
appreciably larger front component
than was required for that aperture.
noticeably increasing the ~meter
of oblique light beams, ax. vi the
amount at light reaching the corners
of the image. This factor enabled
the degree of vignetting usually found
in bigbapefiure lenses to be greatly
decreased. Such vigneltlng is parti-
cularly disturbing in colour photo-
graphy and was therefore reduced to
an acceptable level in the SUMMITAR.
Leitz the summicron objective 5cm camera lens info
- Brand: Leica
- Product Code: 3163
- Availability: In Stock
-
$5.00
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