Next Generation Filters for
Digital SLR Photography
EXUS Series
Marumi Optical Co., Ltd.
Tokyo, Japan
• Product Features
• Comparison with Super DHG Series
Argraph Corporation
Carlstadt, NJ 07072
1
The Background
Digital cameras are constantly advancing.
Today, models equipped with high-tech features
such as 35mm full-frame digital SLR image sensor
are within reach of average consumers.
In other words, the age of high-quality,
high-performance digital cameras is here.
The new EXUS Series – the flagship of Marumi digital camera filters
features exceptional performance and functions that are ready to
meet and exceed the demands of the latest digital SLR cameras.
2
What is “EXUS” ?
EX = Experience, Excellence,…
Marumi has over 60 years experience specializing in excellent
filter technology and manufacturing
U = Ultimate, Ultra,…
Marumi developed the ultimate filter
S = Spec., …
with full specifications. EXUS features the ultimate specifications
based on Marumi’s expertise and technology.
3
EXUS Lens Protect (LP)
5
Key Features
EXUS Lens Protect
● New Antistatic Coating
New
Repels dust and dirt
● Water & Oil Repellent
Improved
Water and oil spots can be easily wiped off
● Ultra Low Reflection
Improved
Less than 0.3%
Blackened outer rim of lens minimizes
internal reflections
● Flatness & Strength (Lens)
Improved
t=2.0mm (Super DHG t=1.3mm)
securely fixed with new slim mount
● New Slim Ultra Low Reflection Frame
Light-shielding grooves, satin finish,
knurls on the ring
New
6
EXUS LP: Filter Glass
 Material: White glass (B270), same as the Super DHG Series
 Thickness: 1.3mm ±0.1mm  2.0mm ±0.1mm
Flatness will be stabilized by increasing the lens thickness
(precision quality assured).
Lens Thickness Comparison
EXUS LP
DHG Super LP
Laser interferometer measuring
(transmitted wavefront)
 As pioneered on Marumi’s existing DHG
Series, black-ink is coated on the entire
outer rim of the lens.
7
EXUS LP: Transmission Characteristics
透過率比較グラフ
Transmission
comparison
DHGＳｕｐｅｒ
Super LP
LP ＬＰ
ＤＨＧ
ＬＰvs.vsEXUS
ＥＸＵＳ
Measurement
date:
12/27/2012
測定日：2012/12/27
100
EXUS LP
90
DHG Super LP
80
Transmission
透過率[%] (%)
70
Transmission
Rate
60
50
40
30
20
10
0
300
350
400
450
500
Wavelength
(nm)
波長[nm]
EXUS LP
550
600
650
700
DHG Super LP
8
EXUS LP: Achieving Ultra-low Reflection
反射率比較グラフ
Reflection
ratio comparison
DHG Super
vs. EXUS
LP ＬＰ
ＤＨＧ
ＳｕｐｅｒLPＬＰ
vs ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
5
ratio (%)
Reflection
反射率[%]
4
3
DHG Super LP
2
1
0
380
430
480
EXUSLP
LP ①面
Surface ①
EXUS
530
580
Wavelength
(nm)
波長[nm]
EXUS
EXUSLP
LPSurface
②面 ②
630
DHG
DHG Super
SuperLP
LPSurface
①面 ①
680
730
780
DHG
DHGSuper
SuperLPLPSurface
②面 ②
9
EXUS LP: Achieving Ultra-low Reflection
5
Reflection
Rate
Average refection value in different wavelength ranges
Average reflection ratio of wavelength
band between 420 and 680 nm —
Less than 0.6% for the DHG Super Series
4
ratio (%)
Reflection
反射率[%]
反射率比較グラフ
Reflection
ratio comparison
DHG Super
vs. EXUS
LP ＬＰ
ＤＨＧ
ＳｕｐｅｒLPＬＰ
vs ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
各波長範囲での反射率平均値
400400～700[nm]
– 700 nm
420 – 680 nm
420～680[nm]
0.227
0.222
Surface ①
①面
0.227
0.222
EXUS EXUS
0.239
0.239
Surface ②
②面
0.239
0.239
DHG
0.505
0.446
Surface ①
①面
0.505
0.446
Super
SuperDHG Surface
0.427
0.383
②
②面
0.427
0.383
EXUS LP: Improved to
Less than 0.3%
3
DHG Super LP
2
1
EXUS LP
0
380
430
480
EXUSLP
LP ①面
Surface ①
EXUS
530
580
Wavelength
(nm)
波長[nm]
EXUS
EXUSLP
LPSurface
②面 ②
630
DHG
DHG Super
SuperLP
LPSurface
①面 ①
680
730
780
DHG
DHGSuper
SuperLPLPSurface
②面 ②
10
EXUS LP: Water/Oil-repellent Coating with Antistatic Function (Patent pending)
Verification method using Styrofoam
Verification method using charged voltage
measurement (amount of electrostatic)
Lens holder
Insert lenses in a pool of Styrofoam.
Stir lenses and remove.
EXUS LP
Electrostatic
measurement
device
DHG Super LP
11
EXUS LP: Water-repellent Coating with Antistatic Function (ASC coating for LPs)
(Patent pending)
EXUS
Anti- Static
Coating
帯電防止性能比較グラフ
Antistatic
performance comparison
ＤＨＧ
Ｓｕｐｅｒ
vs EXUS
ＥＸＵＳLPＬＰ
Super
DHG ＬＰ
LP vs.
Room 室温：22℃／湿度：30%RH
temp.: 22ºC / Humidity: 30% RH
Measurement
date: 1/7/2013
測定日：2013/01/07
EXUS
Surface
EXUSLPLP
①面①
EXUS
Surface
EXUSLPLP
②面②
1
2
DHG
LP Surface
①
DHGSuper
Super
LP ①面
測定方法：
レンズ表面を折りたたんだティッシュペーパーで
往復20回擦った後、静電気測定器
(SIMCO製FMX-003)にて帯電電圧を測定する
3
4
5
測定回数
DHG
LP Surface
②
DHGSuper
Super
LP ②面
-13.70
-15.00
-14.00
-11.00
-11.20
voltage (kV)
Charged
帯電電圧[kV]
-13.00
-11.60
-10.60
-12.00
-9.80
-11.00
-9.90
-9.00
-8.00
-10.00
-9.80
-9.00
-8.00
-7.00
DHG Super LP
-6.00
-5.00
-4.00
-3.00
-0.02
-0.01
-2.00
-1.00
0.00
-0.02
-0.03
-0.03
-0.02
-0.01
-0.04
-0.01
Measuring method: Rub the lens surface back
and forth 20 times with a folded tissue paper;
and measure charged voltage using electrostatic
measurement device (SIMCO model FMX-003).
-0.02
EXUS LP
12
EXUS LP: New Ultra-low Reflective Frame
 Even though the lens thickness has
increased to 2mm, thickness of the
frame remains virtually the same as
the existing DHG Super.
Filter thickness comparison
Filter diameter
DHG Super LP
58
6.3
77
6.5
Frame Thickness Comparison
Unit: mm
EXUS LP
6.4
6.4
EXUS LP
DHG Super LP
 Redesigned and improved the frame structure from a conventional
spring-mount to a patented new glass securing system.
Lens ring
Screw lock
with adhesive
(Locktight)
Spring
Easy for lens
to come loose
Conventional Spring Method
Pressure lock assures
lens does not
come loose
EXUS LP: Security locking system
with the double lens rings
13
EXUS LP: New Ultra-low Reflective Frame
 Further eliminates ghosting and flaring by adding light-blocking ridges
to the frame. (Patent pending)
Light-blocking ridges
(three grooves)
Light-blocking
ridge
Blue line indicates
where the black-ink
coating is applied
on the lens’ outer
rim.
Conventional ring
with no light-blocking ridges
EXUS LP with light blocking ridges
14
Circular Polarizing Filter (C-PL)
15
Key Features
EXUS Circular PL
● New Antistatic Coating
New
Repels dust and dirt
● Water & Oil Repellent
Improved
Water and oil spots can be easily wiped off
● Ultra Low Reflection
Improved
Less than 0.6%
Blackened outer rim of lens minimizes
internal reflections
● High Transmission Polarizer
New
Transmission Rate 30% higher than conventional polarizers
● Teflon Coated Male Threads
New
For smooth attaching and detaching on camera lens
● New Slim Ultra Low Refection Frame
Light-shielding grooves, satin finish, knurls on the ring
New
16
EXUS C-PL: Filter Glass
 Material: Layer of float glass + high-transmission polarizing film +
1/4λ retarder
 Thickness: 2.55mm ±0.1mm  2.0mm ±0.1mm
Adopted thinner lens capable of maintaining flatness.
Lens Thickness Comparison
EXUS C-PL
Super DHG C-PL
Laser interferometer measuring
(transmitted wavefront)
 As pioneered on Marumi’s existing DHG
Series, black-ink is coated on the entire
outer rim of the lens.
17
EXUS C-PL: Transmission Characteristics
透過率比較グラフ
Transmission
comparison
Super
DHGＣ－ＰＬ
C-PL vs. vs
EXUS
C-PL Ｃ－ＰＬ
ＤＨＧ
Ｓｕｐｅｒ
ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
100
High
Transmission
90
80
Transmission
透過率[%] (%)
70
60
50
40
30
Super DHG C-PL
20
10
0
300
350
400
450
500
Wavelength
(nm)
波長[nm]
EXUS
最大透過率
EXUS C-PL
C-PL Max.
Transmission
EXUS C-PL
C-PL Min.
Transmission
EXUS
最少透過率
DHG Super
Super C-PL Average
Transmission
DHG
平均透過率
550
600
650
700
EXUS
C-PL Average
平均透過率
EXUS C-PL
Transmission
DHG Super
Transmission
DHG
Super C-PL
C-PLMax.
最大透過率
DHG Super
Transmission
DHG
Super C-PL
C-PLMin.
最少透過率
18
EXUS C-PL: Transmission Characteristics
透過率比較グラフ
Transmission
comparison
DHG
Super Ｃ－ＰＬ
C-PL vs. vs
EXUS
C-PL Ｃ－ＰＬ
ＤＨＧ
Ｓｕｐｅｒ
ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
100
High
Transmission
90
80
Transmission
透過率[%] (%)
70
60
EXUS C-PL
50
40
30
Super DHG C-PL
20
10
0
300
350
400
450
500
Wavelength
(nm)
波長[nm]
EXUS
EXUSC-PL
C-PL 最大透過率
Max. Transmission
EXUSC-PL
C-PL 最少透過率
Min. Transmission
EXUS
DHGSuper
Super C-PL Average
Transmission
DHG
平均透過率
550
600
650
700
EXUS
平均透過率
EXUS C-PL Average
Transmission
DHG Super
Super C-PL
Transmission
DHG
C-PLMax.
最大透過率
DHG Super
Super C-PL
Transmission
DHG
C-PLMin.
最少透過率
19
EXUS C-PL: Transmission Characteristics
High
Transmission
透過率比較グラフ
Transmission
comparison
Super
DHG Ｃ－ＰＬ
C-PL vs. vs
EXUS
C-PL Ｃ－ＰＬ
ＤＨＧ
Ｓｕｐｅｒ
ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
100
90
Average
transmittance at
450nm, 550nm, and 650nm on
the existing model,
80
DHG Super C-PL: 33.5%
70
透過率[%]
Average
transmittance at
60
450nm, 550nm, and 650nm on
the new EXUS C-PL: 45.5%
EXUS C-PL
50
More than 30% increase
compared to conventional model
40
30
Super DHG C-PL
20
10
0
300
350
400
450
500
Wavelength
(nm)
波長[nm]
EXUS
最大透過率
EXUS C-PL
C-PL Max.
Transmission
EXUS C-PL
C-PL Min.
Transmission
EXUS
最少透過率
DHG Super
Super C-PL Average
Transmission
DHG
平均透過率
550
600
650
700
EXUS
C-PL Average
平均透過率
EXUS C-PL
Transmission
DHG Super
Transmission
DHG
Super C-PL
C-PLMax.
最大透過率
DHG Super
Transmission
DHG
Super C-PL
C-PLMin.
最少透過率
20
EXUS C-PL: Reflection Rate – Low-reflective Coating
5
Low
Reflection
反射率比較グラフ
Reflection
ratio comparison
DHGＳｕｐｅｒ
Super C-PL
vs. EXUS
C-PL Ｃ－ＰＬ
ＤＨＧ
Ｃ－ＰＬ
vs ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
ratio (%)
Reflection
反射率[%]
4
3
Super DHG C-PL
2
1
0
380
430
480
EXUS
EXUSC-PL
C-PLIncidence
入射側 Side
530
580
Wavelength
(nm)
波長[nm]
Side
EXUS C-PL
C-PLLens
レンズ側
630
DHG
DHGSuper
SuperC-PL
C-PLIncidence
入射側 Side
680
730
780
DHG
Lens
Side
DHGSuper
SuperC-PL
C-PL
レンズ側
21
EXUS C-PL: Reflection Rate – Low-reflective Coating
Low
Reflection
反射率比較グラフ
Reflection
ratio comparison
Super
DHG Ｃ－ＰＬ
C-PL vs. vs
EXUS
C-PL Ｃ－ＰＬ
ＤＨＧ
Ｓｕｐｅｒ
ＥＸＵＳ
Measurement
date: 12/27/2012
測定日：2012/12/27
5
Average refection
value in different wavelength ranges
各波長範囲での反射率平均値
400～700[nm]
400 – 700 420～680[nm]
nm 420 – 680 nm
0.5620.562
0.549 0.549
0.5330.533
0.505 0.505
0.5830.583
0.575 0.575
0.516 0.516
0.492 0.492
入射側
EXUS Incidence side
EXUS
レンズ側
Lens side
入射側 side
DHGSuperIncidence
DHG
レンズ側
Super
Lens
side
ratio (%)
Reflection
反射率[%]
4
Average reflection rate at
wavelength band between
420 and 680nm:
Less than 0.6% maintained
3
Super DHG C-PL
2
1
EXUS C-PL
0
380
430
480
EXUS C-PL Incidence
EXUS C-PL 入射側
Side
530
580
Wavelength
(nm)
波長[nm]
Side
EXUS C-PL
C-PLLens
レンズ側
630
DHG
DHGSuper
SuperC-PL
C-PLIncidence
入射側 Side
680
730
780
DHG
Lens
Side
DHGSuper
SuperC-PL
C-PL
レンズ側
22
EXUS C-PL: New Ultra-low Reflective Frame
 Frame thickness: Reduced from
7.0mm to 6.5mm
Filter thickness comparison
Filter diameter
DHG Super C-PL
58
7.0
77
7.0
Frame Thickness Comparison
Unit: mm
EXUS C-PL
6.5
6.5
EXUS C-PL
DHG Super C-PL
 Basic frame structure is the same but
optimized the form to make the frame slimmer
Super DHG C-PL
Front
frame
Front
frame
Back
frame
Back
frame
EXUS C-PL
25
EXUS C-PL: New Ultra-low Reflective Frame
 Further eliminates ghosting and flaring by adding light-blocking ridges
to the frame (Patent pending)
Light-blocking
ridges
Lightblocking ridge
Blue line indicates
where the black-ink
coating is applied
on the lens’ outer
rim.
EXUS C-PL with light blocking lines
Conventional C-PL
with no light-blocking lines
26
EXUS C-PL: New Ultra-low Reflective Frame
 Applying Teflon coating around male threads improves surface
lubricating performance, enabling smoother attaching and
detaching of the filter and the lens. (Patent pending)
Teflon coating on
Male threads
Teflon coating is applied to the area shaded in blue.
Black is darker compared to other sections
(although hard to tell it by looking at)
27
EXUS Package Design
EXUS Lens Protect
28
EXUS Package Design
EXUS Circular PL
29