ENG I N EEN' N C COR POEAT'ON

P0. BOX 1849 . PEBBLEBEACH, C493953 . (408)372-5038

LABEX-WalLner

I ' todel CA-526

D ig i ta l Spo t Co lo r Ana lyze r

OWNERS MANUAL

LABEX Eng inee r ing Corpo ra t i on

Pebb le Beach , Ca l i f o rn ia

. Copy r igh t 1989

TIIIitItttItT

Tab le o f Contents

I I n s t a l l a t i o n a n d S e t u p

f n t r o d u c t i o n

T e c h n i c a l S p e c i f i c a t i o n s

C o n t r o l L o c a t i o n s

C o n t r o l s a n d D i s p l a y s

Se tup

War ran tv

I I C a l i b r a t i o n

f n t r o d u c t i o n

Co lo r Ta rge t Me thod

D i f f us ion l r l e thod

Summary o f Ca l i b ra t i on S teps

f I I U s e r f n s t r u c t i o n s

I n t r o d u c t i o n

D e t e r m i n a t i o n o f F i l t e r p a c k

D e t e r m i n a t i o n o f E x p o s u r e

E x p o s u r e

S u m m a r y o f U s e r I n s t r u c t i o n s

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I n t r o d u c t i o n! I n s t a l l a t i o n a n d S e t u p

The key to ou ts tand ing pho tog raph ic resu l t s i sr e p r o d u c i b i l i t y . V g r y f e w , i f a n y -

p h o t o g r a p n 6 r s w o u l d c o n s i d e rus ing a camera w i thou t f i r s t consu f t i ng an exposu re me te r andperhaps a co lo r t empera tu re me te r . Co -ns i s tenc i y i n t he en t i repho tog raph ic p rocess demands a s im i l a r l eve l o f - con t ro l i n t hep r in t i ng phase . The LABEX-wa l l ne r D ig i t a l Spo t co lo i Ana lyze r wasdes igned to respond to the same need in the p r i n t i ng p rocess tha tthe co lo r t empera tu re me te r se rves i n t he ma f ing od l f , e nega t i veor t ranspare lcy. Coupled wi th the LABEX-I^ Ia1 ln-er Model u6SOgl , twIn teg ra ted D i .g i t a l Expos r : re Me te r and T imer r i t add resses no inq u e s t r - o n s o f i m p o r t a n c e t o t h e _ c o l o r p r i n t e r : i ) w h a . t i s t h e ; r ; p ; ;f i l t e r p a c k t o p r o d u c e t h e c o l o r t o i r e s d e s i r e d ? 2 ) W h a t i s t h eP l o p e r e x p o s u r e t o o b t a i n t h e d e s i r e d c o l o r s a t u r a t i o n ? I na d d i t i o n ' t h e c o m b i n e d i n s t r u m e n t p r o v i d e s a u t o m a t i c c o n t r o r o fe x p o s u r e t i m i n g .

Y o u w i l l f i n d t h i s m a n u a l c o n v e n i e n t l y d i v i d e d i n t o t h r e ep a r t s :

f I n s t a l l a t i o n a n d S e t u p

I I C a l i b r a t i o n

I I I U s e r I n s t r u c t i o n s

P lease read each o f t hese tho rough ly and fo l l ow the s tep -by_s tepi n s t r u c t i o n s w h i c h v t e r e d e s i g n e d - t o o b t a i n p r o f e i s i o n a l - r e s u l t sw i t h t h e L e a s t p o s s i b l e e f f o r t .

T e c h n i c a l S p e c i f i c a t i o n s

The LABEX-WaI lne r CA-526 D ig i t a l Spo t Co lo r Ana lyze r i sa _ m i c r o p r o c e s s o r c o n t r o l L e d i n s t r u m e n t d e s i g i e d t o m e e t t h e n e e d so f t he mos t demand ing da rk room worke r .

Co lo r Ba lance Measuremen t

F i l t e r R a n g e : - 1 9 9 t o + 1 9 9 t o g a r i t h m i cd e n s i t y u n i t s .

S p o t o r I n t e g r a t e d(d i f fused) ; Cyanr ye1 lowand Magenta ; sw i tched f rommeasurement p robe.

Unlimited plug-in memories.

M e a s u r e m e n t M o d e s :

Memory :

to

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z e r o S e t :

M e a s u r i n g P r o b e

Aper tu re 3

C o s i n e C o r r e c t i o n :

S e n s o r C o n f i g u r a t i o n :

D i s p l a y s

F i l t e r D e n s i t y :

M o d e :

A c c e s s o r i e s

D i f f u s i o n f i l t e r , m e m o r y

S p e c i f i c a t i o n s

V o l t a g e :

D i m e n s i o n s :

P u s h b u t t o n .

5 . 0 m m .

B u i l t i n s w i v e l - + / - 1 0 d e g .i n a l l d i r e c t i o n s .

B l a c k B o d y , ( i n s e n s i t i v eo f f - a x i s s a f e l i g h ti l l u m i n a t i o n ) .

3 d i g i t , L E D .

C y a n , M a g e n t a , Y e I l o w ( a n dT ime when used w i th theMC509l4w) .

modu le and owner I s manua l .

+ / - 5 V A c r 3 0 0 M a . ( D e r i v e df rom the l ' 1C500MW In teg ra tedD ig i t a l Exposu re l r l e te r -T i m e r o r t h e M o d e l 5 0 0P o w e r S u p p l y ) .

8 i n . W x 3 i n . H x 7 i n .D .

F i g u r e I

CONTROLS

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c o n t r o l s a n d D i s p l a v s ( R e f e r t o F i g u r e 1 f o r l o c a t i o n s )

Push bu t ton

- 0 - S e t s F i l t e r D e n s i t y D i s p l a y t o Z e r o

S w i t c h e s ( o n m e a s u r i n g h e a d )

1 . Ana lyze r -Exposu re Sw i t ches be tween Co lo r Ana lyze rand Exposu re -T imer func t i ons (when used w i t f rMC509MW) .

2 . l ' l onoch rome-Cyan-Magen ta -Ye1 low se lec ts f i l t r a t i ona n d s w i t c h e s a p p r o p r i a t e c i r c u i t r y w i t h i n t h ea n a l y z e r .

D isp lays

1 . F i l t e r D e n s i t y ( u n m a r k e d ) i n d i c a t e s f i l t e r c h a n g er e q u i r e d f o r b a l a n c e d f i l t e r p a c k i n l o g a r i t h m i cd e n s i t y u n i t s .

2 . M o d e ( u n m a r k e d ) i n d i c a t e s C y a n , y e l l o w o r t l a g e n t awhen in Ana lyze r mode and T ime in Exposu re o rMonochrome mode (when used w i th MC509MW) .

S e t u p

The LABEX-Wa l lne r CA-526 D ig i t a l Co lo r Ana lyze r p resen ts nop a r t i c u l a r i n s t a L l a t i o n p r o b l e m s . r t s h o u l d b e p l a c e d o n t o p o fe i t he r t he MC509MW T imer Exposu re l " l e te r o r t he Mode l 500 powersupp ly and p lugged in to the j ack marked ' l 4K ' . The i ns t rumen t maybe loca ted anywhere conven ien t t o t he ope ra to r . The LED r i gh ls o u r c e s p o s e n o f o g g i n g h a z a r d s t o m o n o c h r o m e o r c o l o r m a t e r i a l s .s p e c i a r c a u t i o n s h o u l d b e t a k e n h o w e v e r t o p r e v e n t s p i l l i n gp r o c e s s i n g s o l u t i o n s o n t h e i n s t r u m e n t o r e x p o s u r i n g i t t o r e l a t i v eh u m i d i t i e s i n e x c e s s o f 8 5 t w h i c h m a y a f f e c t m e a s u r e m e n t a c c u r a c y .

War ran tv

LIMITED ONE YEAR WARRANTY

LABEX Eng inee r ing Corpo ra t i on war ran ts th i s p roduc tto be f ree f rom de fec ts fo r twe lve mon ths f rom the da te o f pu rchaseby the o r i g ina l consumer . LABEX w i l l r epa i r o r rep lace any p roduc tc o v e r e d b y t h i s w a r r a n t y . I f a d e f e c t i s d i s c o v e r e d r y o u m u s tcon tac t LABEX d i rec t l y . Our cus tomer se rv i ce depar tmen t w i l l t e l lyou how to ob ta in war ran ty se rv i ce . Th i s l im i ted war ran ty does no tcove r any cos ts assoc ia ted w i th i ns ta l l a t i on o r remova l o f t h i sp roduc t ; i nc lud ing bu t no t l im i ted to any such cos ts necessa ry too b t a i n w a r r a n t y s e r v i c e .

Th is l rm i ted war ran ty sha l l - be i nva l i d i f t h i s p roduc t i s

Irl

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i m p r o p e r l y i n s t a l l e d r s u b j e c t t o m i s u s e o r a b u s e r o r i f a n y r e p a i r so f t he p roduc t a re a t tempted by anyone o the r t han LABEX.

The du ra t i on -o f an .y imp l i ed war ran ty g i ven w i th th i s p roduc ti s l im i ted to the du ra t i on o f t h i s exp ress l im i ted war ran ty - . LABEXe x p r e s s l y d i s c l a i m s a n y l i a b i l i t y f o r i n c i d e n t a ] o r c o n s e q u e n t i a ld a m a g e s a r i s i n g a s a r e s u l t o f t h e s a l e o r u s e o f t h i s p r o d u c t .

Some s ta tes do no t a l l ow l im i ta t i ons on how long an imp l i edw a r r a n t y l a s t s o r t h e e x c l u s i o n o r l i m i t a t i o n o f i n c i d e n t i l o rconseguen t ia l damages r so the above l im i ta t i ons may no t app ly toy o u .

T h i s w a r r a n t y g i v e s y o u s p e c i f i c l e g a l r i g h t s , a n d y o u m a ya l s o h a v e o t h e r r i g h t s w h i c h m a y v a r y f r o m s t a t e t o s t a t e

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I f C a l i b r a t i o n

f n t r o d u c t i o n

T h e a n a l y s i s o f c o l o r n e g a t i v e s o r t r a n s p a r e n c i e s a n d t h es e l e c t i o n o f f i l t e r p a c k , ( a n d e x p o s u r e ) r m a y b e c a r r i e d o u t e i t h e rb y r e f e r e n c e t o a c o l o r t a r g e t , s u c h a s a g r e y c a r d r o r b y t h e" d i f f u s i o n " m e t h o d . A s t a n d a r d c o l o r t a r g e t i s t h e p r e f L r r e dm e t h o d i n p r o f e s s i o n a l p h o t o g r a p h y . f n t h i s m e t h o d a n l t a n d a r d "c o l o r t a r g e t i s i n c l u d e d i n e a c h c a m e r a e x p o s u r e r o r i n e a c h s e r i e so f _ s i m i l a r e x p o s u r e s , a n d t h i s t a r g e t s u p p l i e s a l l o f t h e n e c e s s a r yi n f o r m a t i o n t o t h e a n a l y z e r f o r c o L o r b a l a n c e ( a n d e x p o s u r e ) . r ;m o s t c o m m e r c i a l p h o t o g r a p h y t h e " s t a n d a r d " c o l o r t a r g e t c h o s e n i sa n 1 8 8 g r e y c a r d . r n p o r t r a i t p h o t o g r a p h y t h e n s t a n d a r d " c o l o rt a r g e t c h o s e n i s o f t e n s k i n t o n e w i t h a l l o w a n c e f o r i n d i v i d u a lc o l - o r d i f f e r e n c e s . I n t h e " d i f f u s i o n " m e t h o d t h e e n t i r e i m a g e i sd i f f u s e d w i t h t h e e x p e c t a t i o n t h a t t h e c o l o r b a t a n c e o f t h en a v e r a g e n s c e n e w i l l b e a n e u t r a l g r e y o f s o m e ' a v e r a g e "r e f l e c t a n c e . f n g e n e r a l h o w e v e r , s c e n e s f r e q u e n t l y h a v e a d o m i n i n tc o l o r a n d s o m e a r e b r i g h t w h i l e o t h e r s a r e d a r k . w e s t r o n g l yreconmend the use o f t he co lo r t a rge t me thod fo r co lo r ba lance i nae x p o s u r e d e t e r m i n a t i o n . F o l l o w i n g a r e s t e p - b y - s t e p i n s t r u c t i o n sf o r c a l i b r a t i o n o f c o l o r p a p e r s f o r c o l o r b a l a n c e u s i n g t h es t a n d a r d c o l o r t a r g e t a n d t h e d i f f u s i o n m e t h o d . I n s t r u c t i o n s f o re x p o s u r e c a L i b r a t i o n m a y b e f o u n d i n y o u r M C 5 0 9 M W U s e r s M a n u a l ( i fu s e d ) a n d e x p o s u r e c a l i b r a t i o n s h o u l d b e c a r r i e d o u t i n c o n j u n c t i o nw i t h c o l o r b a l a n c e c a l i b r a t i o n .

Co lo r Ta rqe t Me thod

1 . S e l e c t a w e l l e x p o s e d c o l o r n e g a t i v e o r t r a n s p a r e n c yc o n t a i n i n g a s t a n d a r d c o l o r t a r g e t s u c h a s a n 1 g tg r e y c a r d .

2 . B y t r i a l a n d e r r o r m a k e t h e b e s t p o s s i b l e g x 1 0e n l a r g e m e n t u s i n g f r e s h c h e m i s t r y , p a y i n g s p e c i a la t ten t i on to fo l l ow ing a STANDARD PROCEDURE. (Usea n e x p o s u r e t i m e o f a t l e a s t 1 0 s e c o n d s t o m i n i m i z ee r r o r s i n t r o d u c e d b y I a m p a f t e r g l o w ) .

3 . r n s t a l l a P l u g - r n M e m o r y M o d u l e i n t h e s o c k e t p r o v i d e di n t h e C o l o r A n a l y z e r . A s e p a r a t e M e m o r y M o d u l e r srequ i red fo r each t ype o f paper to be used .

4 . W i t h o u t a l t e r i n g e n l a r g e m e n t r a t i o , f - s t o p o r f i l t e rpack r t u rn o f f t he sa fe l i gh ts and tu rn on thee n l a r g e r , ( p r e s s t h e F O C U S b u t t o n i f u s i n g t h eMC50gMW Exposure t ' l e te r -T imer ) . pos i t i on themeasur ing head on the p ro jec ted image o f t hes tandard co lo r t a rge t . Us ing bo th hands on thec o s i n e - c o r r e c t i n g m e a s u r i n g h e a d r a l i g n i t w i t h t h ep ro jec ted image such tha t t he shadow o f t he r i ng i scen te red abou t t he da rk senso r ape r tu re .

II

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5 - P ress the Ana lyze r -Exposu re rocke r sw i t ch on them e a s u r i n g h e a d s o t h a t t h e w h i t e d o t i i v i s i u r e ,( A n a l y z e r M o d e ) .

6 - Tu rn the Monochrome-cyan-Magen ta -ye11ow se lec to rs w i t c h o n t h e m e a s u r i n g h e a d - t o i n e c y a n p o s i t i o n ,( l a rge "h l l _ " 9o t pa r t i a t l y oOscureA) . The ModeD isp la l ' w i r l show ln i r l um lna i "a

- " c ' and a randomnumber w i r -1 appear i n t he LED F r l t e r

- p "n " i t y

D isp lay . Nex t p ress the _0_ f , u t ton . The d i sp la l zw i l l n o w r e a d " 0 0 n ( o r n - 0 0 " ) .

7 . Tu rn the Monochrome-cyan-Magen ta -ye11ow sw i t ch to theMagen ta pos i t i on . The tqbae o i sp iay w i l r show ani l t um ina ted 'Mn and a random nu r t i " r -w i r f

"pG; ; i nt h e L E D F i l t e r D e n s i t y . _ O i s p l a y . U s i n g a s m a l ls c r e w d r i v e r , ( a s m a l l

- i r r u m i n a i e d s c r e w d r i v e r i ss u p p l i e d w i t h t h e M c 5 o g M w n x p o s u i e M e t e r - T i m e r ) ,

ad jus t t he_ RED_ po ten t i ome te r i n l r , " Memory Modu leu n t i l t h e L E D d i s p l a y r e a d s " 0 0 " ( o r , _ 0 0 n ) .

8 . Tu rn the Monochrome-cyan-Magen ta -ye r low sw i t ch to theyg ]10y pos i r i on . The r ' r 6ae o i sp r i y w i l l show ani l tuminated 'y ' and a random nu*b" i - wi r l " tp ; ;

inthe LED F i l t e r .Dens i t y o i sp ray . - ' - ea ius t

t he yELLowpo ten t i ome te r i n t he uemo iy

-Modure un t i l t he LEDd i s P I a Y r e a d s n 0 O " ( o r n - 0 0 " ) .

r f a z e r o b a l a n c e c a n n o t b e a t t a i n e d w i t h e i t h e r t h e' M ' o r ' y . p o t e n t i o m e t e r , i t w i l l - L e n e c e s s a r y t oread jus t t he nc " po ten t i ome te r i n t he Memory Modu lea n d r e p e a t s t e p s 6 t h r o u g h g .

9 . I f u s i n g t h e M C 5 0 9 M W E x p o s u r e M e t e r _ T i m e r , c o m p l e t et h e c a r i b r a t i o n p r o c e s s b y c a l i b r u i i n g t h a t u n i t f o r! h " e x p o s u r e - ( s e e y o u r n c s o g M W o w n e r , s M a n u a r f o rd e t a i l s ) .

INOTE:

10 . No te the t ype o f paperM e m o r y M o d u l e . T h i sp r o c e d u r e .

i n t he pane l p rov ided on thec o m p l e t e s t h e c a l i b r a t i o n

D: . f f us r on Me thod

c a l i b r a t i o n o f t h e c A - 5 2 5 c o l o r A n a l y z e r u s i n g t h e d i f f u s i o nmethod i s ca r r i ed ou t by fo ] . l ow ing the - same

s teps desc r ibed abovefo r t he co lo r Ta rge t t ' t - e tnoa w i tn t r re excep t i on tha t a d i f f usedimage o f t he en t i re f rame i s subs t i t u ted ro i ' t t e - - i r i g ! -o r t he co lo rta rge t i n s tep 4 . A d i f f us ion f i l t e r -nu :

. b .een *pp i l "o wh ich maybe instatred in rhe red f i l rer horalr -11

q4" "; t ; ; ; ; ;

or adapredto the enlarging lens cover to produce a ai i l ' ""Ji f iJ;" ' . rr shouldbe kept in mind when us ing the Di f fu i io" Method th ;C th" unulys is

IIIIIIltITI

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o f t he nega t i ves and t ransparenc ies w i l l - be based on some ave ragec o l o r , u s u a l l y a s s u m e d t o b e n e u t r a l g r e y , a n d s o m e a v e r a g e s c e n eb r i g h t n e s s , a n d t h a t s c e n e s w h i c h d i f f e r s i g n i f i c a n t l y f r o m t h ec a L i b r a t e d c o l o r b a l a n c e a n d b r i g h t n e s s w i l l r e q u i r e a d d i t i o n a lo p e r a t o r e f f o r t t o o b t a i n o p t i m a l p r i n t s .

Summarv o f CaL ib ra t i on S teps

L . l { a k e a c o r r e c t t e s t p r i n t f r o m a p r o p e r l y e x p o s e dn e g a t i v e o r t r a n s p a r e n c y .

2 . Se t t he d i sp layed va lue o f t he CYAN memory to ze ro byp r e s s i n g t h e - 0 - b u t t o n .

3 . Se t t he d i sp layed va lue o f t he MAGEI * ITA memory to ze roby a .d3us t i ng the RED memory po ten t i ome te r .

4 . Se t t he d i sp layed va lue o f t he YELLOW merno ry to ze roby ad jus t i ng the YELLOW memory po ten t i ome te r .

5 . C a l i b r a t e e x p o s u r e i f u s i n g t h e l , l C 5 0 9 M W E x p o s u r eM e t e r - T i m e r .

II I I I U s e r f n s t r u c t i o n s

fn t roduc t r on

use of the LABEX-Wa11n_e_r cA-526 Digi ta l spot col0r Analyzeri n v o l v e s t h r e e d i s t i n c t " t " p " ,

f D e t e r m i n a t i o n o f t h e c o r r e c tp r i n t w i t h t h e r l e s i r e d c o l o r

p r o d u c e a p r i n tt h e M C 5 0 9 M W o r

I I D e t e r m i n a t i o n o f t h e c o r r e c t e x p o s u r e t ow i t h t h e d e s i r e d c o l o r s a t u r a t i o n l u s i n go t h e r m e a n s ) .

I I I E x p o s u r e ( u s i n g t h e M C 5 0 9 o r o t h e r t i m e r ) .

The fo l l 0w ing s tep -by s tep i ns t ruc t i _ons - w i l l he lp the use r t ocomplete .n": :^ l t r^ : :_: . :0." . quickly una

"r ,"r i j

'u- i " 'o s ive someins igh t in to the process wh icn w i l r ln fu rn suggest add i t ionar . r {aysi n w h i c h t h e i n s f r u m e n t * u v b e u s e d t o - p r o a u i - e a ; i d " v a r i e t y o f

i ; : " l i : r l : : no"" ibre wirhoul rhe sensi iometr ic conrrol arrorded by

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fns ta l l the appropr ia te Momory t r lodu le fo r the paperto be used. Mount the negat ive or L r i r , "p " rency inthe en 'a rger and f ocu" tnu image ; t -h lne en targ ingl e n s a t a m a x i m u m a p e r t u r e .

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