p1 how to adjust ak-hc3800 check the cross point of r, g and b channels. 4. adjust r and b gamma to...

How to adjust

AK-HC3800

Main Points:

1.Recommend Adjustment

2.Color match to other camera

P1

⑧ How to adjust MATRIX ? ⑨ Is it necessary to use

COLOR CORRECTION ?

② What is standard for PEDESTAL?

① Check picture with a GRAYSCALE Chart.

④ GAMMA＝0.45 ? ⑤ How to adjust FLARE.

③ Know-how for AWB

⑦ How to adjust DTL.

⑥ KNEE

Make the best picture

with your camera.

⑩ Is it difficult to color match to other camera?

＜Condition for camera adjustment＞ 1. Set the camera and the room condition as follow

2

Gray Scale Chart

45deg.

3.The chart is lighted under

2000 lux 3200 K with tow tungsten

lights．

WFM

Color Moniter

1. Room should be darker.

2. Shoot the Gray Scale chart with a right angle. 3～5m

4. Make sure the chart to be lighted

flat all over using a lux mater.

2000lux at the center and

2000lux±50lux at the corners of the

chart.

P3

＜Grayscale Chart＞

1) Murakami Grayscale Chart

2) BBC64 Grayscale Chart

＜Murakmi Grayscale Chart＞Data Calculated ValueStep No. Refraction

(%)100%TransferInput(%)

HD γ Out（%)

SDγ Out(%)

White 11 89.9 100.0 100.0 100.010 77.3 86.0 93.0 93.49 63 70.1 83.9 85.28 48.6 54.1 73.4 74.57 37.9 42.2 64.5 67.76 27.9 31.0 54.7 59.05 19.8 22.0 45.3 50.64 13 14.5 35.6 41.93 8.1 9.0 26.6 33.82 4.5 5.0 17.8 30.0

Black 1 2 2.2 8.8 8.8

＜BBC64 Grayscale Chart＞Data Calculated ValueStep Density Remission

in %OutputVoltagein %

100%TransferInput(%)

HDγ Out(%)

SDγ Out(%)

White 1 0.22 60 100 100.0 100.0 100.02 0.32 48 88.75 80.0 89.7 90.03 0.44 36 77.5 60.0 77.5 79.54 0.57 26 66.25 43.3 65.4 68.65 0.73 19 55 31.7 55.0 59.66 0.91 12 43.75 20.0 42.9 48.57 1.13 7 32.5 11.7 31.3 38.18 1.43 4 21.25 6.7 21.9 29.6

Black 9 1.85 1.4 10 2.0 10.0 10.0

HDγ Carve：V＝1.115L 0 .45-0．1１１５　（1≧L≧0.0228）

　　V＝４L（0.0228≧L≧０）

SDγ Carve：V=L0 .45　　Init ial Gain X５

Grayscale　Chart Data

Adjustment Procedure • Perfect Check Sequence

– AWB, ABB, BSHD, ABB, AWB,

– GAMMA, FLARE, BSHD

– ABB, AWB,

– GAMMA, FLARE, AWB

• Easy setup Sequence

– AWB, ABB, AWB

– GAMMA, FLARE,

– ABB, AWB,

– GAMMA, FLARE, AWB

• KNEE, DTL, MATRIX & Color Correction

P4

＜Adjustment procedure＞

1. Adjust PED ( Including B. SHADING )

2. Adjust W.SHADING if you have integrating

sphere. Otherwise don’t adjust white shading.

3. Adjust γ( GAMMA )

4. Adjust FLARE

5. Adjust KNEE

6. Adjust DTL

7. Adjust MATRIX & COLOR CORRECTION

8. Adjust AUTO IRIS

＜What is PED (Pedestal）?＞

Video Signal = 0.7VP-P

Sync. Signal= 0.3 VP-P

BL Level

PEDESTAL

Deference of M PED depend on area

NTSC BLACK Spec．： 7.5%±2.5% 1. USA： 7.5%( Setup ) + 1% ( Ped ) → Total 8.5% Black at ENC OUT 2. Japan： 0% ( Setup ) + 5% ( Ped ) → 5%Black ( W/O SET UP ) PAL 1.Europe（Continental)： 3% ( Ped ) → 3% Black UK：1% → 1% Black HD 3%Ped( to unify PAL and NTSC ) But actually each country use each pedestal level. M.PED: In Japan: 5%. 3%(TBS), 2.5%(NHK) In America : 0%

PEDESTAL means VASE On Signal.

SD SYNC

HD SYNC

Difference between HD SYNC and SD SYNC

＜1．PED ＞

１．Close IRIS to check the black Level.

2. Press ABB on.

3. Check the black level on WFM with

WFM GAIN x5

4. If MASTER PEDESTAL (M PED) is

not specified level, adjust M PED on

MENU.

<MENU>

1) WFM GAINx1

2) WFM GAINx5

<2．B.SHADING > It is caused by dark current of CCD.

5. Check BLACK SHADING in H and V rate.

<MENU>

HC3800 doesn’t have black shading because it is

automatically adjusted when you execute black

balance.

3) B. SHADIG CORRECT: OFF

4) B. SHAD H Rate 5) B. SHAD V Rate

VSAW

VPARA

After

Correction Before

Correction

１．Open IRIS to reach G white level＝100%

2. Press AWB on.

3. Check R, G and B level to be same

on WFM with WFM GAINx1

( KNEE= OFF )

<3. White ( Including W.SHADING)1/3> It is mainly caused by lens now. And lighting is so difficult. Because you need uniformity of light source. So if you don’t have integrating sphere, don’t adjust white shading. Default is OK.

1) R, G and B Level=100%

4. Check WHITE SHADING in H and V rate.

6. If WHITE SHADING is not flat，adjust H and

V SAW and PARA correction with Lens EXT

x1 and X2.

<MENU>

<3. White ( Including W.SHADING ) 2/3> 2) W. SHADE→Flat with H rate

3) W. SHADE → Flat with V rate

W. SHADING adjusting

effect is as follows.

<MENU>

＜3. White ( Including W.SHADING ) 3/3＞

5) R H SAW : +255 6) R H PARA : +255

7) R V SAW : +255 8) R V PARA : +255

Integrating Sphere

• It is very difficult to get uniformity of light source. You need an integrating sphere. If you don’t have it, don’t adjust white shading.

Lamp

Lamp

Uniform Light

INPUT

OU

TP

UT

INPUT

OU

TP

UT

INPUT

OU

TP

UT

INPUT

OU

TP

UT

INPUT

OU

TP

UT

INPUT

OU

TP

UT

INPUT

OU

TP

UT

INPUT

OU

TP

UT

＋

＋

＋

＋

＝

＝

Gamma = OFF

Gamma=ON

Broadcaster

V=L1/2.2 ＊1/2.2=0.45

CRT： OUTPUT

=(INPUT)２．２

＜What is Gamma?＞

Television Set OUT

＜Gamma Correction equation＞

2. HD Gamma Correction carve equation

V＝1.115L0.45-0．1115 （1≧L≧0.0228）

V＝4L （0.0228≧L≧0）

1. SD Gamma Correction carve equation

V=L0.45 （1≧L≧0.037703）

V=5L （0.037703≧L≧0）

Initial Gain X5（BBC Spec.）

Initial Gain X4.5（Studio camera)

Initial Gain X4.0~3.5 (ENG camera)

INPUT: L OUTPUT: V

Example:

L=0.31 （Cross Point)

V=（0.31）0.45

=0.59

Example:

L=0.31 （Cross Point)

V=1.115（0.31）0.45－0.1115

=54.7

<4．Adjust GAMMA> １．Open IRIS to get 100% level.

(KNEE=OFF)

2. Set MASTER GAMMA=0.45 and

check the G channel cross point=55%.

3. Set WFM display mode to OVERLAY

to check the cross point of R, G and B

channels.

4. Adjust R and B GAMMA to mach to G

channel.

5. Check the picture coluor to be gray on

the color monitor.

<MENU>

1) PARADE display

2) OVERLAY display

<5. Adjust FLARE 1/2> １．Open IRIS to 2 stop.（400%Input）

2. Check which channel has less flare problem

without FLARE correction.

R and G channel have less flare problem.

B channel has more flare problem.

1) Without FLARE correction

2) Adjust G and B FLARE to R flare

3. Adjust G and B FLARE to R flare level .

R FLR:

G FLR:

B FLR:

4.Check the picture color to be gray on the color

monitor.

<5．Adjust FLARE 2/2> 1. Set IRIS to get 100% level.

2. Check R, G and B flare to be equal.

3. Check the picture color to be gray for

each steps on the color monitor.

Small Summary

② White=100%

and flat

③ Gamma=55%

④ FLARE=12%

① PED=3%

and flat

＊R=G=B

＊Grayscale should be gray on the color monitor.

<6. Adjust KNEE > 1. Set IRIS to get 100% level. (Knee Off) 2. Switch GAIN from 0dB to +12dB and open iris 0.5 stop. or don’t change gain and open iris 2.5 stop. 3. Knee On 4. Adjust KNEE POINT and KNEE SLOPE.(In case of WHITE CLIP=109% ) MPNT (MASTER KNEE POINT ) ：95.0% MSLP(MASTER KNEE SLOPE) : 140 ( Adjust peak white reach to 109% )

1) 100% level (Knee Off) 2) +12dB + 0.5 stop (600%) 3) Adj. KNEE POINT & SLOPE.

F Stop Calculation of 600% signal

• 2 ways to get 600% signal – Gain 0dB + 2.5 STOP iris open

• In case of F5.6 at 0dB – Change to F2.4

– Gain +12dB + 0.5 Stop iris open • In case of F2.8 at 0dB

– Change to F2.4

F 2.8 4 5.6 8 11 16

2.5 Stop Open 1.2 1.7 2.4 3.5 4.8 6.9

F 2.8 4 5.6 8 11 16

0.5Stop Open 2.4 3.5 4.8 6.9 9.5 13.9

＜DTL EFFECT＞

①ＤＴＬ=OFF in White back ②DTL=ON in White back ③DTL=OFF in White back ④DTL=ON in Black back

⑤DTL=OFF in White back ⑥DTL=ON in White back ⑦DTL=OFF in White back ⑧DTL=ON in Black back

1)For high luminance color ( yellow )

2)For low luminance color ( blue )

What’s the difference between HD DTL and SD’s?

• HD DTL

– Peak Frequency (Default:17.3MHz)

• The thickness of the detail is changed. • 12.4/12.5/12.7/12.9/13.0/13.3/13.6/13.9/14.2/14.6/15.0/15.5/16.

1/16.7/17.3/18.0/18.6/18.8/19.0/19.2/19.5/19.9/20.3/20.9/21.5/22.4/23.6/25.4/28.6/37.1

• SD DTL

– Peak1 and 2 Frequency (Default: 1.89MHz)

• The thickness of the detail is changed. • 1.89M/2.18M/2.56M/3.17M/4.0M/5.28M/6.75M/

What’s the difference between resolution and sharpness?

• Human beings feel resolution by edge enhancement (detail). – So even if resolution is full, detail off picture is not

sharp.

• Complaint about SD quality which is down-converted from HD. – HPX3100 SD quality is good.

• It has both HD DTL and SD DTL function.

– HPX370 SD quality is not good. • It doesn’t have SD DTL function. If you shoot resolution chart,

resolution is very good. But the picture is not sharp. Because HPX3700 doesn’t have SD DTL function.

Down Conversion

DTL

10 20 30

HD (HPX3100, 370)

SD (HPX370)

SD (DVX100) DTL

Sharper than HPX370

Duller than DVX100

SD (HPX3100) DTL

Excellent SD picture

(MHz)

10 20 30 (MHz)

10 20 30 (MHz)

10 20 30 (MHz)

17.3MHz

1.89MHz

＜How to make DTL EDGE＞

T

M

B

T+B

T+B-2M

1) Monitor

2) WFM

3) V EDGE 4) H EDGE

S

L.P.F

DELAY

L-D

<7．Adjust DTL > 1) H DTL Edge=10~15%

2) V. DTL Edge=10~15%

1. Set IRIS to get 80% white level

avoiding KNEE compression.

2. Adjust H and V DTL LEVEL to 10~15%.

3. Adjust CRSP (In case of camcorder, DTL

CORING ) to be less noise but no effect

small edge on the each steps.

PEAK 12.4, 12.5, 12.7, 12.9, 13.0, 13.3, 13.6, 13.9, 14.2, 14.6, 15.0, 15.5, 16.1, 16.7, 17.3, 18.0, 18.6, 18.8, 19.0, 19.2, 19.5, 19.9, 20.3, 20.9, 21.5, 22.4, 23.6, 25.4, 28.6, 37.1

＜7. Adjust DTL＞ 3) H DTL Edge=10~15%

4) V. DTL Edge=10~15%

80% level 10~15% edge

H Rate

80% level 10~15% edge

V Rate

<7．Adjust DTL >

1. Recommend to adjust CRISP as below drawing.

①Less noise

②No effect small edge

5) CRISP (DTL CORING)

<8. Adjust Black Gamma >

Black gamma can adjust color (for ex. face tone) at the dark scene. Change BLKR and BLKB Our advantage is even if you adjust black gamma, pedestal doesn’t change.

Auto Iris Adjustment

<9. DRS > Dynamic Range Stretch

<DRS>

Minimizing saturation in highlights and blocking

in dark areas for more detailed imaging by real

time Gamma correction function.

AK-HC3500

You can see both seat and cloud.

<Examples of DRS >

Conventional Video AK-HC3500

Too much saturation

in high light area Too much darkness

in dark area

10. Skin Tone Detail • HD shows wrinkles. Skin Tone Detail can

reduce details of skin tone area.

Is skin tone different in case of different race?

Skin Color Skin Color

If 4 different casters appear on TV, we think we need 4 skin tone settings. But actually 4 skin tone phases are the same. So one setting covers 2 or 3 skin tones. So totally it can cover 4 or 5 people.

Skin Tone Detail

1. Hold <CHARA/MENU> more than 2sec.

2. Rotate <SELECT> dial to move a cursor to <HD DTL/SKIN DTL> .

3. Press <SELECT> dial to enter <HD DTL/ SKIN DTL> menu.

to ROP

To Top

How to operate

How to adjust skin tone detail 1. Set SKDTL to ON in the <HD DTL/SKIN DTL> menu.

1. Move to SKIN DETAIL SWITCH by <SELECT> dial, press it, rotate it to select ON and press it to confirm.

2. Set CURSOR to ON. 1. Move to CURSOR by <SELECT> dial, press it, rotate it to select ON and press it to

confirm. 3. Move cursor to the place you want to compensate skin tone.

1. Adjust the value of H and V by <SELECT> dial to move the cursor to the position where you want to get skin tone.

4. Execute SKIN-GET (Don’t forget to set <MEMORY SELECT> <EFFECT <MEMORY> to A, B or A+B.)

1. Move to SKIN GET by <SELECT> dial, rotate it to select execute and press it. 5. Set ZEBRA to ON to adjust compensation range.

1. Move to ZEBRA by <SELECT> dial, press it, rotate it to select ON and press it to confirm.

6. Adjust WIDTH to get correct compensation range. 1. Move to crisp and set it to maximum(63) to see the effect easily. 2. Move to WIDTH by <SELECT> dial, rotate it to select WIDTH, press it to confirm

and adjust compensation range. 7. Set ZEBRA to OFF to check compensation amount.

1. Move to ZEBRA by <SELECT> dial, press it, rotate it to select OFF and press it to confirm.

8. Adjust CRISP to get correct compensation amount. 1. Move to CRISP by <SELECT> dial, press it to select , rotate it to adjust

compensation amount.

To Top Difference between

HPX3100 and HC3800 Back to ROP

HPX3100

Y MAX, Y MIN

I CENTER, I WIDTH

Q WIDTH, Q PHASE

CRISP: Amount of detail reduction PHASE: Phase for skin tone WIDTH: Width of skin tone SATU: Saturation of skin tone areas

The difference between HPX3100 and HC3800 HPX3100 HC3800

Detection Position Fixed (Center Area) Variable (Any position)

Compensation Amount Fixed Variable (CRISP)

Parameter Y MAX, Y MIN,

I CENTER, I WIDTH,

Q WIDTH, Q PHASE

WIDTH, PHASE, SATU

+ Direction

- Direction

+ Direction

- Direction PHAS

SATU

To Top Back

to ROP

＜11. What is MATRIX? ＞ ( Basic Circuit Diagram )

B IN

R IN

G IN

+ +

+ +

+ +

R-G

R-B

G-R

B-G

B-R

G-B

R OUT

G OUT

B OUT

What’s the difference between MATRIX circuit and RGB gain control?

MATRIX circuit maintains color temperature. RGB gain control changes color

temperature.

＜What is MATRIX?＞

-G

W

R

R-G

-B

G

B

x

y

CIE Chromaticity Diagram

R-B

Natural color in nature

Color reproduction can be made inside this triangle by optical R, G and B.

Color reproduction can be expanded with MATRIX.

( Explanation With Chromaticity Diagram )

Human feels brighter and

more saturated than

actual color. (Memory

Color)

MATRIX

6-axis

MATRIX

12-axis

MATRIX

＜What is MATRIX? 3/8＞

1) MATRIX=OFF

Camera condition: GAMMA＝ON, DTL=ON, PED=3%, AWB done with DSC28 white

2) A MATRIX=ON

4) B MATRIX=ON

A MATRIX

R-G: +31

R-B: -04

G-R: +04

G-B: +04

B-R: +01

B-G: -01

B MATRIX

(another

proposal)

R-G: +45

R-B: +07

G-R: +01

G-B: +13

B-R: -01

B-G: +02

3) With CDM28 chart

( MATRIX EFFECT )


5) R-G：+63 ( MAX )

8) R-B：+63 ( MAX )

6) G-R：+63 ( MAX )

9) G-B：+63 ( MAX )

7) B-R：+63 ( MAX )

10) B-G：+63 ( MAX )

Camera condition : GAMMA＝ON, DTL=ON, PED=3%, AWB done with DSC28 white

( Each MATRIX factor effect )


11) Rainbow grass

13) Lighted back with a light box

12) Line selected

14) Color separation on WFM

( MATRIX effect with color

separation )


15) MATRIX=OFF

Camera condition: GAMMA＝OFF, DTL=OFF, PED=10%, AWB done with backlight.

16) A MATRIX=ON

17) B MATRIX=ON

A MATRIX

R-G: +31

R-B: -04

G-R: +04

G-B: +04

B-R: +01

B-G: -01

B MATRIX

(another

proposal)

R-G: +45

R-B: +07

G-R: +01

G-B: +13

B-R: -01

B-G: +02

( MATRIX EFFECT )

＜What is MATRIX? 7/8＞ Camera condition: GAMMA＝OFF, DTL=OFF, PED=10%, AWB done with backlight

18) R-G：+63 ( MAX )

21) R-B：+63 ( MAX )

19) G-R：+63 ( MAX )

22) G-B：+63 ( MAX )

20) B-R：+63 ( MAX )

23) B-G：+63 ( MAX )

( Each MATRIX factor effect )


24) MATRIX=OFF

Camera condition: GAMMA＝ON, DTL=ON, PED=3%, AWB done with TE108 White

25) A MATRIX=ON

27) B MATRIX=ON

A MATRIX

R-G: +31

R-B: -04

G-R: +04

G-B: +04

B-R: +01

B-G: -01

B MATRIX

(another

proposal)

R-G: +45

R-B: +07

G-R: +01

G-B: +13

B-R: -01

B-G: +02

26) With Esser TE108 chart

( MATRIX EFFECT )

<8.Adjust MATRIX and COLOR CORRECTION １/5> Camera condition: GAMMA＝ON, DTL=ON, PED=3%, AWB done with DSC28 white

1. Shoot the DSC28 chart and set 100% G level by

IRIS, then make AWB on.

2. Set the vector scope GAIN to be X1.875.

3. Adjust color signals on the vector scope with R-G,

R-B, G-R, G-B, B-R and B-G as in the below photo.

1) G level=100%, make AWB=on

2) Adjust MATRIX as in below

<8.Adjust MATRIX and COLOR CORRECTION 2/5> Camera condition: GAMMA＝ON, DTL=ON, PED=3%, AWB done with TE108 white

1. Shoot the TE108 chart and set 100%

G level by IRIS, then make AWB on.

2. Set the vector scope GAIN to be X1.

3. Adjust color signals on the vector

scope with R-G, R-B, G-R, G-B, B-R

and B-G as in the below photo.

3) G level=100% , make AWB=on

4) Adjust MATRIX as in below MATRIX R-G : +00 → +45

MATRIX R-B : +00 → +07

MATRIX G-R : +00 → +01

MATRIX G-B : +00 →+13

MATRIX B-R : +00 →-01

MATRIX B-G : +00 →+02

<8.Adjust MATRIX and COLOR CORRECTION 3/5> Condition: GAMMA＝ON, DTL=ON, PED=3%,

AWB done with DSC28 white. MATRIX=B 5） MATRIX=B, COLOR CORRECTION=OFF

6） MATRIX=B, COLOR CORRECTION=ON

1. Shoot the DSC28 chart and adjust COLOR

CORRECTION as in the below picture 6).

MTX12 (Color Correction)

2. Select color axis by the dial

1 SAT PHASE

Cy +00→+27 +00

Cy-G +00 +00

G +00→ +21 +00 → -10 G-Yl +00 +00

Yl +00 +00

Yl-R +00 +00 ■COLOR CORRECTION ： ON

1 SAT PHASE

R +00 →-20 +00

R-Mg +00 +00

Mg +00 +00 →+19

Mg-B +00 +00

B +00 +00

B-Cy +00 +00

<8.Adjust MATRIX and COLOR CORRECTION 4/5>

Condition:

GAMMA＝ON

DTL=ON,

PED=3%, AWB done with

DSC28 white.

MATRIX=B

7) R SAT: +63 ( MAX ) 8) R SAT: -63 ( MIN )

9) R PHASE: +63 ( MAX ) 10) R PHASE: -63 ( MIN )

( COLOR CORRECTION effect on the vector scope with R SAT and PHASE )

<8.Check final color reproduction> Condition: GAMMA＝ON, DTL=ON, PED=3%, AWB done with Gray chart.

MATRIX=B, COLOR CORRECTION=ON

1. Shoot the standard skin tone chart or human face and check color reproduction

on the color monitor.

Remark: Color monitor should be adjusted correctly to D65 color, STANDARD

gamma and normal scan.

CAM

CM D65

WFM 3200K

13) DSC CamBelles chart

Blue Filter

p1 how to adjust ak-hc3800 check the cross point of r, g and b channels. 4. adjust r and b gamma to...

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