CAMERA SYSTEMS
Product Information | November 2007
ARRI/Zeiss Master Diopters
Main Features:
• Work with most
common lenses
•
Reduction rings cover
lens diameters of
95 mm, 104 mm,
110 mm and 114 mm
• Use for extreme
close ups or
wide & close shots
•
Achromatic
technology &
Zeiss T* coating = superior optical quality
• 3 diopters at:
+0.5, +1, +2 strength
The ARRI/Zeiss Master Diopters are a set of three
diopters (+0.5, +1 and +2) that work with all ARRI
Primes such as Master Primes, Ultra Primes, Ultra
16 lenses, the ARRI/Zeiss Lightweight Zoom LWZ-1
and others. With the Master Diopters it is possible
to quickly grab an extreme close up or get a wide
angle shot with shallow depth of field, all with unprecedented sharpness and contrast and without
the optical aberrations of traditional diopters.
Master Diopters provide considerably better optical
quality than regular diopters since the +1 and +2
diopters use an achromatic lens assembly and they
all use the Zeiss T* coating. The achromatic lenses
greatly reduce color fringes and spherical aberration,
common problems with traditional one lens diopter
designs. And the same Zeiss T* coating that is used
on the Master Primes reduces glare and improves
transmission for higher contrast.
Shot with a 100 mm lens without diopter
Master Diopters at: +0.5, +1 and +2 strength
Shot with a 100 mm lens and Master Diopter +1 and +2
Compatibility
Master Diopters are matched to the Master Prime lenses for optimal color, contrast and
overall image quality. However, since their optical quality is far better than that of other
diopters, they can also be used with most Ultra Primes, Ultra 16 lenses, the ARRI/Zeiss
Lightweight Zoom LWZ-1 and others with excellent results.
Master Primes
Ultra Primes
Ultra 16
Lightweight Zoom
Ident.-No.: K5.40448.0 · Technical data subject to change without further notice. © ARRI/11-2007
Arnold & Richter Cine Technik GmbH & Co. Betriebs KG · Türkenstrasse 89 · D-80799 Munich · phone +49 (0)89 3809 0 · fax +49 (0)89 3809 1245 · www.arri.com
and many others
CAMERA SYSTEMS
Product Information | November 2007
There are many uses for diopters, the most popular being:
• W
hen a static shot of something small is needed, but the close focus distance of
the lens is insufficient. For best optical quality at the highest magnification, use a
single low power diopter with a long focal length prime lens. This will also leave
ample room for lighting.
• U
sing a diopter on a wide angle lens reduces the close focus distance by only a
small amount but throws the background substantially out of focus, thus achieving a unique wide angle look with shallow depth of field.
• A
shot where the focus moves from something very close to the lens to a
medium distance or vice versa.
Close up‘s using the ARRI/Zeiss Master Diopters
on a 100 mm Master Primes at T1.3
• S
pecial effects work.
Handling
An often overlooked issue with diopters is how they are attached to the lens. The
Master Diopters employ a self-centering clamping mechanism that ensures quick
and safe use, while at the same time keeping the diopters in the precise position to
ensure optimal image quality.
Since diopters usually must be used quickly, we decided against the commonly used
threaded or Matte Box bound solutions. Instead, the Master Diopters can be quickly
attached to, removed from or stacked onto the front of compatible lenses by means
of a clamping mechanism. Reduction rings for different lens front diameters snap
into the rear of the diopters. The 114 mm reduction ring allows them to attach to
all Master Primes, the Ultra Prime 180 or the Lightweight Zoom LWZ-1. Other reduction rings cover lens diameters of 95 mm, 104 mm and 110 mm, so the Master
Diopters can be attached to most Ultra Primes, LDS Ultra Primes, Ultra 16 lenses
and Cooke S4 lenses. This system puts the least amount of stress on the lens itself,
while holding even a stack of three Master Diopters securely in place. Best optical
results are achieved by using a single Master Diopter, but it is also possible to stack
two diopters for a higher magnification ratio.
At the same time this design keeps the proper distance between diopter and lens,
keeps the diopter properly centered and ensures that diopter and lens are perfectly
parallel to each other, all important but often ignored factors that influence image
quality. The weight of the Master Diopters has been kept to a minimum without sacrificing optical quality through the careful choice of glass and lens thickness, so the
Master Diopters can be easily handled on the set.
Master Diopters can be attached to the lens or
each other with a single thumb screw.
Master Diopters reduction rings cover lens
diameters of 95 mm, 104 mm, 110 mm and
114 mm for different lens front diameters.
Optical Quality
There is no discernible light loss when using the Master Diopters, an advantage over
macro lenses that usually are not as wide open as regular primes and may require
relighting a scene. Another advantage is that the Master diopters will not influence
the color balance of the Master Primes, Ultra Primes and the Lightweight Zoom
LWZ-1, so close ups will match perfectly with the regular footage, something that is
always a concern when using macros, borescopes or other specialty lenses. Because
of their high optical quality, Master Diopters allow shooting at wide open T-stops,
which will open new creative options.
Master Diopters can be ordered individually, or in
a convenient travel case that holds three Master
Diopters and a number of reduction rings.
Ident.-No.: K5.40448.0 · Technical data subject to change without further notice. © ARRI/11-2007
Arnold & Richter Cine Technik GmbH & Co. Betriebs KG · Türkenstrasse 89 · D-80799 Munich · phone +49 (0)89 3809 0 · fax +49 (0)89 3809 1245 · www.arri.com
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