product features comparison with super dhg series next generation filters for digital slr...

• Product Features• Comparison with Super DHG Series

Next Generation Filters for Digital SLR Photography

EXUS Series

Marumi Optical Co., Ltd.

Tokyo, Japan

Argraph CorporationCarlstadt, NJ 07072

1

Strictly Confidential

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.

The Background

2

What is “EXUS” ?

EX = Experience, Excellence,…Marumi has over 60 years experience specializing in excellent

filter technology and manufacturing

EX = Experience, Excellence,…Marumi has over 60 years experience specializing in excellent

filter technology and manufacturing

U = Ultimate, Ultra,…Marumi developed the ultimate filter

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.

S = Spec., …with full specifications. EXUS features the ultimate specifications

based on Marumi’s expertise and technology.3

EXUS Lens Protect (LP)

5

　● New Antistatic Coating　　 Repels dust and dirt

　● Water & Oil Repellent　　 Water and oil spots can be easily wiped off

　● Ultra Low Reflection　　 Less than 0.3%

Blackened outer rim of lens minimizes internal reflections 　　

Key FeaturesEXUS Lens Protect

　● Flatness & Strength (Lens)　　 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

Improved

Improved

New

Improved

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).

As pioneered on Marumi’s existing DHG Series, black-ink is coated on the entire outer rim of the lens. 　　

Laser interferometer measuring (transmitted wavefront)

EXUS LP DHG Super LP

Lens Thickness Comparison

7

0

10

20

30

40

50

60

70

80

90

100

300 350 400 450 500 550 600 650 700

透過

率[%

]

波長[nm]

透過率比較グラフＤＨＧＳｕｐｅｒＬＰ vs ＥＸＵＳＬＰ

測定日：2012/12/27


EXUS LP: Transmission Characteristics

Wavelength (nm)

Tran

sm

issio

n (

%)

Transmission comparisonDHG Super LP vs. EXUS LP

Measurement date: 12/27/2012

EXUS LP

DHG Super LP

Transmission

Rate

8

0

1

2

3

4

5

380 430 480 530 580 630 680 730 780

反射

率[%

]

波長[nm]

反射率比較グラフＤＨＧＳｕｐｅｒＬＰ vs ＥＸＵＳＬＰ

測定日：2012/12/27

EXUS LP ①面 EXUS LP ②面 DHG Super LP ①面 DHG Super LP ②面

DHG Super LP

EXUS LP: Achieving Ultra-low Reflection

Wavelength (nm)

Refl

ecti

on

rati

o

(%)

EXUS LP Surface ① EXUS LP Surface ② DHG Super LP Surface ① DHG Super LP Surface

②

Reflection ratio comparisonDHG Super LP vs. EXUS LP


9

0

1

2

3

4

5

380 430 480 530 580 630 680 730 780

反射

率[%

]

波長[nm]

反射率比較グラフＤＨＧＳｕｐｅｒＬＰ vs ＥＸＵＳＬＰ

測定日：2012/12/27

EXUS LP ①面 EXUS LP ②面 DHG Super LP ①面 DHG Super LP ②面

400～700[nm] 420～680[nm]①面 0.227 0.222②面 0.239 0.239①面 0.505 0.446②面 0.427 0.383

各波長範囲での反射率平均値

EXUS

DHG Super

Average reflection ratio of wavelength band between 420 and 680 nm —

Less than 0.6% for the DHG Super Series

EXUS LP: Improved to

Less than 0.3%

EXUS LP

DHG Super LP

EXUS LP: Achieving Ultra-low Reflection

Reflection ratio comparisonDHG Super LP vs. EXUS LP


Average refection value in different wavelength ranges

400 – 700 nm 420 – 680 nm

EXUSSurface ① 0.227 0.222Surface ② 0.239 0.239

DHG Super

Surface ① 0.505 0.446Surface ② 0.427 0.383

Wavelength (nm)

Refl

ecti

on

rati

o

(%)

EXUS LP Surface ① EXUS LP Surface ② DHG Super LP Surface ① DHG Super LP Surface

②

ReflectionRate

10

Verification method using Styrofoam


Electrostatic

measurement device

Lens holder

Verification method using charged voltage measurement (amount of

electrostatic)

Insert lenses in a pool of Styrofoam. Stir lenses and

remove.

EXUS LP: Water/Oil-repellent Coating with Antistatic Function (Patent pending)

11

(Patent pending)

EXUS LP: Water-repellent Coating with Antistatic Function (ASC coating for LPs)

-15.00

-14.00

-13.00

-12.00

-11.00

-10.00

-9.00

-8.00

-7.00

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1 2 3 4 5

-0.03 -0.02

-0.04 -0.01

-0.02

-0.02 -0.01

-0.02 -0.03

-0.01

-8.00

-9.80

-9.00 -9.90

-9.80

-11.00 -11.20 -10.60

-13.70

-11.60

帯電

電圧

[kV]

測定回数

帯電防止性能比較グラフＤＨＧＳｕｐｅｒＬＰ vs ＥＸＵＳＬＰ

室温：22℃／湿度：30%RH測定日：2013/01/07EXUS LP ①面

EXUS LP ②面

DHG Super LP ①面

DHG Super LP ②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

DHG Super LP

EXUS LP

Ch

arg

ed

volt

ag

e

(kV

)

Antistatic performance comparison

Super DHG LP vs. EXUS LPRoom temp.: 22ºC / Humidity:

30% RHMeasurement date: 1/7/2013

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).

(Number of measurement

attempts)

EXUS LP Surface ①

EXUS LP Surface ②

DHG Super LP Surface ①

DHG Super LP Surface ②

EXUS Anti- Static

Coating

12

Even though the lens thickness has increased to 2mm, thickness of the frame remains virtually the same as the existing DHG Super.

Conventional Spring Method

Frame Thickness Comparison


Lens ring

Spring

Screw lock with

adhesive(Locktight)

Easy for lens to come loose

Pressure lock assures lens

does not come loose

EXUS LP: New Ultra-low Reflective Frame

Filter thickness comparison Unit: mmFilter diameter DHG Super LP EXUS LP

58 6.3 6.477 6.5 6.4

Redesigned and improved the frame structure from a conventional spring-mount to a patented new glass securing system.

EXUS LP: Security locking system with the double lens rings

13

Light-blocking ridges (three

grooves)

Light-blocking

ridge

Blue line indicates where the black-ink coating is applied on the lens’ outer rim.

EXUS LP: New Ultra-low Reflective Frame

Further eliminates ghosting and flaring by adding light-blocking ridges to the frame. (Patent pending)

Conventional ring

with no light-blocking ridges

EXUS LP with light blocking ridges

14

Circular Polarizing Filter (C-PL)

15

　● New Antistatic Coating　　 Repels dust and dirt

　● Water & Oil Repellent　　 Water and oil spots can be easily wiped off

　● Ultra Low Reflection　　 Less than 0.6%

Blackened outer rim of lens minimizes internal reflections 　　

Key FeaturesEXUS Circular PL

　● High Transmission Polarizer 　　 Transmission Rate 30% higher than conventional polarizers　　

　● New Slim Ultra Low Refection FrameLight-shielding grooves, satin finish, knurls on the ring 　　

　● Teflon Coated Male Threads　　 For smooth attaching and detaching on camera lens

New

Improved

Improved

New

New

16

New

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.

As pioneered on Marumi’s existing DHG Series, black-ink is coated on the entireouter rim of the lens. 　　

EXUS C-PL Super DHG C-PL

Lens Thickness Comparison

Laser interferometer measuring (transmitted wavefront)

17

0

10

20

30

40

50

60

70

80

90

100

300 350 400 450 500 550 600 650 700

透過

率[%

]

波長[nm]

透過率比較グラフＤＨＧＳｕｐｅｒＣ－ＰＬ vs ＥＸＵＳＣ－ＰＬ

測定日：2012/12/27

EXUS C-PL 最大透過率 EXUS C-PL 平均透過率EXUS C-PL 最少透過率 DHG Super C-PL 最大透過率DHG Super C-PL 平均透過率 DHG Super C-PL 最少透過率

EXUS C-PL: Transmission Characteristics

Tran

sm

issio

n (

%)

Super DHG C-PL

Transmission comparisonSuper DHG C-PL vs. EXUS C-

PLMeasurement date:

12/27/2012

Wavelength (nm)EXUS C-PL Max. TransmissionEXUS C-PL Min. TransmissionDHG Super C-PL Average Transmission

EXUS C-PL Average TransmissionDHG Super C-PL Max. TransmissionDHG Super C-PL Min. Transmission

High Transmissio

n

18

0

10

20

30

40

50

60

70

80

90

100

300 350 400 450 500 550 600 650 700

透過

率[%

]

波長[nm]


測定日：2012/12/27



EXUS C-PL

Wavelength (nm)

Tran

sm

issio

n (

%)

Super DHG C-PL

Transmission comparisonDHG Super C-PL vs. EXUS C-

PLMeasurement date:

12/27/2012

EXUS C-PL Max. TransmissionEXUS C-PL Min. TransmissionDHG Super C-PL Average Transmission


High Transmissio

n

19

0

10

20

30

40

50

60

70

80

90

100

300 350 400 450 500 550 600 650 700

透過

率[%

]

波長[nm]


測定日：2012/12/27


Average transmittance at 450nm, 550nm, and

650nm on the new EXUS C-PL: 45.5%More than 30%

increasecompared to conventional

model

Average transmittance at 450nm, 550nm, and

650nm on the existing model,

DHG Super C-PL: 33.5%

EXUS C-PL

Super DHG C-PL

Wavelength (nm)

Transmission comparisonSuper DHG C-PL vs. EXUS C-

PLMeasurement date:

12/27/2012


EXUS C-PL Max. TransmissionEXUS C-PL Min. TransmissionDHG Super C-PL Average Transmission


High Transmissio

n

20

0

1

2

3

4

5

380 430 480 530 580 630 680 730 780

反射

率[%

]

波長[nm]

反射率比較グラフＤＨＧＳｕｐｅｒＣ－ＰＬ vs ＥＸＵＳＣ－ＰＬ

測定日：2012/12/27

EXUS C-PL 入射側 EXUS C-PL レンズ側 DHG Super C-PL 入射側 DHG Super C-PL レンズ側

EXUS C-PL: Reflection Rate – Low-reflective Coating

Super DHG C-PL

Reflection ratio comparisonDHG Super C-PL vs. EXUS C-

PLMeasurement date:

12/27/2012

Wavelength (nm)

Refl

ecti

on

rati

o

(%)

EXUS C-PL Incidence Side EXUS C-PL Lens Side DHG Super C-PL Incidence Side DHG Super C-PL Lens Side

LowReflection

21

0

1

2

3

4

5

380 430 480 530 580 630 680 730 780

反射

率[%

]

波長[nm]

反射率比較グラフＤＨＧＳｕｐｅｒＣ－ＰＬ vs ＥＸＵＳＣ－ＰＬ

測定日：2012/12/27

EXUS C-PL 入射側 EXUS C-PL レンズ側 DHG Super C-PL 入射側 DHG Super C-PL レンズ側

400 700[nm]～ 420 680[nm]～入射側 0.562 0.549

レンズ側 0.533 0.505入射側 0.583 0.575

レンズ側 0.516 0.492

各波長範囲での反射率平均値

EXUS

DHG Super

Average reflection rate at wavelength band between 420 and

680nm: Less than 0.6%

maintained

EXUS C-PL: Reflection Rate – Low-reflective Coating

Super DHG C-PL

EXUS C-PL

Average refection value in different wavelength ranges

400 – 700 nm

420 – 680 nm

EXUSIncidence

side0.562 0.549

Lens side 0.533 0.505

DHG Super

Incidence side

0.583 0.575

Lens side 0.516 0.492

Reflection ratio comparisonSuper DHG C-PL vs. EXUS C-

PLMeasurement date:

12/27/2012

Wavelength (nm)

Refl

ecti

on

rati

o

(%)

EXUS C-PL Incidence Side DHG Super C-PL Incidence Side DHG Super C-PL Lens SideEXUS C-PL Lens Side

LowReflection

22

Front frame

Back frame

Front frame

Back frame

EXUS C-PL: New Ultra-low Reflective Frame

Frame thickness: Reduced from 7.0mm to 6.5mm

Filter thickness comparison Unit: mmFilter diameter DHG Super C-PL EXUS C-PL

58 7.0 6.577 7.0 6.5

Frame Thickness Comparison

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 EXUS C-PL

25

Light-blocking ridges

Light-blocking

ridge

Blue line indicates where the black-ink coating is applied on the lens’ outer rim.

EXUS C-PL with light blocking lines


Further eliminates ghosting and flaring by adding light-blocking ridges to the frame (Patent pending)

Conventional C-PL

with no light-blocking lines

26

Black is darker compared to other sections

(although hard to tell it by looking at)


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 is applied to the area shaded in blue.

Teflon coating onMale threads

27

EXUS Lens Protect

EXUS Package Design

28

EXUS Circular PL

EXUS Package Design

29

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