Photoshop Lesson3a

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PHOTOSHOP

Transcript of Photoshop Lesson3a

Photo RetouchingAdobe® Photoshop® provides you witha variety of tools and commands forimproving the quality of a photographicimage. This lesson explainstechniques for basic image correctionby stepping you through the process ofacquiring, resizing, and retouching aphoto intended for a print layout.reserving an extensive body ofwork assembled by a team ofphotographers from 1991 to1995, The Architecture of Italy CD-ROMdisc is a compilation of more than threehundred sumptuous photographs. With crossreferencedtext provided for each photograph,this collection can be used as aresource for many endeavors. Much morethan a "digital coffee-table book, "you arefree to modify, rent, lease, distribute, orcreate derivative works based upon theoriginal images found in this collection.Included in this collection are St. Mark'sCathedral in Venice; the Tower and Baptistryat Pisa; the Colliseum, the Forum, theVatican, and highlights from the VaticanMuseum in Rome; the Duomo, the MediciPalace, the Ponte Vecchio, and the Gates ofHeaven in Florence. More than 75 superbarchitectural examples, which have receivedlittle recognition, have also been included.Gina Antonelli is known for her works onItalian fine art, as well as several previousphotographic publications: "Italy's BestLoved Gardens," the series "Italian Traditionin Color and Form" (Dress; Cuisine; Architecture;Pastimes), and two editions of thebook "Italian Traditional Patterns." Inaddition to completing the Rome and Naplesphotography assignment, photographer andart historian Tomas Panini assembled andedited the explanatory notes for the 300photographs. Photographer Anton Harris,having apprenticed at Maria Guerra Atelierin Paris for seven years, contributed his ownunique insights to the Venice and Romeassignments. In 1984 Mr. Anton Harris wonthe Paris Exhibition Prize for his DesignStudy photographic series, consisting ofthree books.

PHOTO RETOUCHINGPAGE 2 OF 14I n th i s l e s s o n , y o u w i l l l e ar n t o d o th e f o l l o w i n g :•C h o o s e th e c o r r e c t r e s o l u t i o n f o r a s c a n n e d p h o t o g r a p h .•C r o p a n i m a g e t o f i n a l s i z e .•A d j u s t th e t o n a l ra n g e o f a n i m a g e .•R e m o v e a c o l o r c a s t f r o m a n i m a g e u s i n g a n a d j u s t m e nt l a y e r.•U s e th e R e p l a c e C o l o r c o m m a n d t o c h a n g e th e h u e a n d s at u r at i o n o f a s e l e c t e d c o l o r i n ap h o t o g r a p h .•A d j u s t th e s at u rati o n a n d b r i g ht n e s s o f i s o l ate d ar e a s o f a n i m a g e u s i n g th e s p o n g e a n dd o d g e t o o l s .•U s e th e r u b b e r s t a m p t o o l t o e l i m i n ate a n u n w a n t e d o b j e c t f r o m a n i m a g e .•R e p l a c e p a rt s o f a n i m a g e w i t h a n o t h e r i m a g e .•A p p l y th e U n s h a r p M a s k f i lte r t o f i n i s h th e p h o t o - ret o u c h i n g p r o c e s s .•S a v e a n A d o b e P h o t o s h o p f i l e i n a f o r m at that c a n b e u s e d b y a p a g e l a y o ut p r o g r a m .Strategy for retouchingI n P h o t o s h o p , y o u c a n ret o u c h p h o t o g r a p h i c i m a g e s i n w a y s o n c e l e ft o n l y t o h i g h l y tra i n e dp r o f e s s i o n a l s . Y o u c a n c o r r e c t p r o b l e m s i n c o l o r q u a l it y a n d t o n a l ra n g e c r e ate d d u r i n g th e o r i g i n a lp h o t o g r a p h y o r d u r i n g th e i m a g e ’ s s c a n . Y o u c a n a l s o c o r r e c t p r o b l e m s i n c o m p o s it i o n a n d s h a r p e nth e o v e r a l l f o c u s o f th e i m a g e .Basic stepsM o s t r et o u c h i n g i n P h o t o s h o p f o l l o w s th e s e g e n e r a l s t e p s :•C h e c k th e s c a n q u a l it y a n d m a k e s u r e that th e r e s o l u t i o n i s a p p r o p r i ate f o r h o w th e i m a g e w i l lb e u s e d .•C r o p th e i m a g e t o f i n a l s i z e .•

A d j u s t th e o v e r a l l c o n tra st o r t o n a l ra n g e o f th e i m a g e .•R e m o v e a n y c o l o r c a s t s .•A d j u s t th e c o l o r a n d t o n e i n s p e c i f i c p a rt s o f th e i m a g e t o b r i n g o u t h i g h l i g ht s , m i d t o n e s , s h a d o w s ,a n d d e s at u rate d c o l o r s .•S h a r p e n th e o v e r a l l f o c u s o f th e i m a g e .PHOTO RETOUCHINGPAGE 3 OF 14Intended useT h e ret o u c h i n g te c h n i q u e s y o u a p p l y t o a n i m a g e d e p e n d i n p a rt o n h o w th e i m a g e w i l l b e u s e d .W h e t h e r a n i m a g e i s i nt e n d e d f o r b l a c k - a n d - w h it e p u b l i c at i o n o n n e w s p r i nt o r f o r f u l l - c o l o rI n ter n et d i s t r i b ut i o n w i l l af f e c t e v er yt h i n g fr o m th e r e s o l u t i o n o f th e i n it i a l s c a n t o th e ty p e o f t o n a lra n g e a n d c o l o r c o r r e c t i o n th e i m a g e re q u i r e s .T o i l l u s trate o n e a p p l i c at i o n o f r et o u c h i n g te c h n i q u e s , th i s l e s s o n ta k e s y o u thr o u g h th e s t e p s o fc o r r e c t i n g a p h o t o g r a p h i nte n d e d f o r f o u r- c o l o r p r i nt p u b l i c at i o n . T h e i m a g e i s a s c a n n e d p h o t o g r a p ho f V e n i c e that w i l l b e p l a c e d i n a n A d o b e P a g e M a k e r® la y o u t f o r a n A 4 - s i z e m a g a z i n e . T h eo r i g i n a l s i z e o f th e p h o t o i s 5 i n c h e s x 7 i n c h e s a n d it s f i n a l s i z e i n th e p r i nt l a y o ut w i l l b e 3 . 7 5 i n c h e sx 6 i n c h e s .Original image Image cropped and Image placed into page layoutretouched

Resolution and image sizeT h e f i r s t s t e p i n r et o u c h i n g a p h o t o g r a p h i n P h o t o s h o p i s t o m a k e s u r e that th e i m a g e i s th e c o r r e c tre s o l u t i o n . T h e ter mresolutionre f er s t o th e n u m b e r o f s m a l l s q u a r e s k n o w n a spixelsthat d e s c r i b ea n i m a g e a n d e s ta b l i s h it s d eta i l . R e s o l u t i o n i s d et er m i n e d b ypixel dimensionso r th e n u m b e r o fp i x e l s a l o n g th e w i d t h a n d h e i g ht o f a n i m a g e .Pixels in photographic imagereserving an extensive body ofwork assembled by a team ofphotographers from 1991 to1995, The Architecture of Italy CD-ROMdisc is a compilation of more than threehundred sumptuous photographs. With crossreferencedtext provided for each photograph,this collection can be used as aresource for many endeavors. Much morethan a "digital coffee-table book, "you arefree to modify, rent, lease, distribute, orcreate derivative works based upon theoriginal images found in this collection.Included in this collection are St. Mark'sCathedral in Venice; the Tower and Baptistryat Pisa; the Colliseum, the Forum, theVatican, and highlights from the VaticanMuseum in Rome; the Duomo, the MediciPalace, the Ponte Vecchio, and the Gates ofHeaven in Florence. More than 75 superbarchitectural examples, which have receivedlittle recognition, have also been included.Gina Antonelli is known for her works onItalian fine art, as well as several previousphotographic publications: "Italy's BestLoved Gardens," the series "Italian Traditionin Color and Form" (Dress; Cuisine; Architecture;Pastimes), and two editions of thebook "Italian Traditional Patterns." Inaddition to completing the Rome and Naplesphotography assignment, photographer andart historian Tomas Panini assembled andedited the explanatory notes for the 300photographs. Photographer Anton Harris,having apprenticed at Maria Guerra Atelierin Paris for seven years, contributed his ownunique insights to the Venice and Romeassignments. In 1984 Mr. Anton Harris wonthe Paris Exhibition Prize for his DesignStudy photographic series, consisting ofthree books.

PHOTO RETOUCHINGPAGE 4 OF 14Types of resolutionI n c o m p u t e r g r a p h i c s , th e r e ar e d i f f er e nt ty p e s o f r e s o l u t i o n :T h e n u m b e r o f p i x e l s p e r u n it o f l e n gt h i n a n i m a g e i s c a l l e d th eimage resolution, u s u a l l y m e a s u r e di n p i x e l s p e r i n c h ( p p i ) . A n i m a g e w i t h a h i g h r e s o l u t i o n h a s m o r e p i x e l s , a n d th er e f o r e a l ar g e r f i l es i z e , tha n a n i m a g e o f th e s a m e d i m e n s i o n s w i t h a l o w re s o l u t i o n .T h e n u m b e r o f p i x e l s p e r u n it o f l e n gt h o n a m o n it o r i s th emonitor resolution, u s u a l l y m e a s u r e d i nd o t s p e r i n c h ( d p i ) . I n A d o b e P h o t o s h o p , i m a g e p i x e l s ar e tra n s l ate d d i r e c t l y i nt o m o n it o r p i x e l s .T h u s , i f th e i m a g e re s o l u t i o n i s h i g h e r tha n th e m o n it o r r e s o l u t i o n , th e i m a g e a p p e ar s l ar g e r o ns c r e e n tha n it s s p e c i f i e d p r i nt d i m e n s i o n s . F o r e x a m p l e , w h e n y o u d i s p l a y a 1 - i n c h - b y - 1 - i n c h ,1 4 4 - p p i i m a g e o n a 7 2 - d p i m o n it o r, th e i m a g e f i l l s a 2 - i n c h - b y - 2 - i n c h ar e a o f th e s c r e e n .3.75 in. x 6 in. @ 72 ppi; 100% view on screen 3.75 in. x 6 in. @ 200 ppi; 100% view on screen

file size 342K file size 2.48 MBT h e n u m b e r o f i n k d o t s p e r i n c h p r o d u c e d b y a n i m a g e s etter o r l a s e r p r i n ter i s th eprintero routputresolution. H i g h e r r e s o l u t i o n p r i nt er s c o m b i n e d w i t h h i g h e r r e s o l u t i o n i m a g e s g e n e r a l l y p r o d u c eth e b e s t q u a l it y. T h e a p p r o p r i ate r e s o l u t i o n f o r a p r i nt e d i m a g e i s d et er m i n e d b o t h b y th e p r i nterre s o l u t i o n a n d b y th escreen frequencyo r l i n e s p e r i n c h ( l p i ) o f th e h a l ft o n e s c r e e n s u s e d t ore p r o d u c e i m a g e s .Resolution for this lessonT o d et er m i n e th e i m a g e re s o l u t i o n f o r th e p h o t o g r a p h i n th i s l e s s o n , w e f o l l o w e d th e c o m p u t erg r a p h i c s r u l e o f th u m b f o r c o l o r o r g r a y s c a l e i m a g e s i nte n d e d f o r p r i nt o n l ar g e c o m m e r c i a lp r i nter s : S c a n at a r e s o l u t i o n 1 . 5 t o 2 ti m e s th e s c r e e n fr e q u e n c y u s e d b y th e p r i nte r. B e c a u s e th em a g a z i n e i n w h i c h th e i m a g e w i l l b e p r i nt e d u s e s a s c r e e n fr e q u e n c y o f 1 3 3 l p i , th e i m a g e w a ss c a n n e d at 2 0 0 p p i ( 1 3 3 x 1 . 5 ) .Note:For more information on resolution and image size, see Chapter 3, “Getting Images IntoPhotoshop,” in theA d o b e P h o t o s h o p U s e r G u i d e.PHOTO RETOUCHINGPAGE 5 OF 14

Getting startedB e f o r e b e g i n n i n g th i s l e s s o n , d e l ete th e A d o b e P h o t o s h o p P r e f e r e n c e s f i l e t o r e st o r e th e p r o g r a m ’ sd e f a u lt s e tt i n g s . T o d e l et e th e P r e f er e n c e s f i l e i n W i n d o w s®, e x it P h o t o s h o p , a n d th e n d e l ete th eA d o b e P h o t o s h o p 5 P r e f s f i l e i n th e A d o b e P h o t o s h o p S e tt i n g s s u b d i r e c t or y i n s i d e th e P h o t o s h o p 5d i r e c t or y. T o d e l ete th e P r e f er e n c e s f i l e i n M a c® O S , q u it P h o t o s h o p , l o c at e th e A d o b e P h o t o s h o p 5P r e f s f i l e i n th e A d o b e P h o t o s h o p S e tt i n g s f o l d e r i n s i d e th e A d o b e P h o t o s h o p 5 . 0 f o l d e r, d r a g th ef i l e t o th e T r a s h , a n d c h o o s e S p e c i a l > E m p t y T r a s h .A f t e r y o u h a v e d e l et e d th e P r e f e r e n c e s f i l e , r e start th e P h o t o s h o p p r o g r a m . T h e n o p e n th e f i n a li m a g e t o s e e h o w th e a d j u s t m e n t s y o u ’ l l m a k e af f e ct th e f i n a l art w o r k .1C h o o s e F i l e > O p e n . L o c a t e a n d o p e n th e T r a i n i n g\ L e s s o n 0 3 f o l d e r i n th e A d o b e P h o t o s h o p 5 . 0a p p l i c at i o n f o l d e r o r o n th e tut o r i a l C D . T h e n s e l e c t E n d 0 3 . p s d a n d c l i c k O p e n .2I f y o u l i k e , c h o o s e V i e w > Z o o m O u t t o m a k e th e i m a g e s m a l l e r, a n d l e a v e it o n y o u r s c r e e n a sy o u w o r k . I f y o u d o n ’ t w a n t t o l e a v e th e i m a g e o p e n , c h o o s e F i l e > C l o s e .N o w o p e n th e s tart f i l e t o v i e w th e p h o t o g r a p h y o u w i l l b e r et o u c h i n g . ( A l t h o u g h th e p h o t o g r a p hf o r th i s l e s s o n w a s o r i g i n a l l y s c a n n e d at 2 0 0 d p i a s d e s c r i b e d a b o v e , th e f i l e i n w h i c h y o u w i l l b ew o r k i n g i s a c t u a l l y a l o w - re s o l u t i o n f i l e . T h e r e s o l u t i o n w a s c h a n g e d t o l i m it th e f i l e s i z e a n d t om a k e w o r k o n th e e x e r c i s e s m o r e e f f i c i e nt. )3C h o o s e F i l e > O p e n . L o c a t e a n d o p e n th e L e s s o n 0 3 f o l d e r, s e l e c t S t a rt0 3. p s d , a n d c l i c k O p e n .4C h o o s e F i l e > S a v e A s , t y p e th e n a m e Work03.psd, a n d c l i c k S a v e .