| Author: Warren Lynch |
| < P > A l t h o u g h u s i n g d i g i t a l c a m e r a s f o r u n d e r w a t e r p h o t o g r a p h y i s r e l a t i v e l y e a s y , t h e r e a r e s i g n i f i c a n t d i f f e r e n c e s b e t w e e n w h a t i t t a k e s t o s h o o t u n d e r w a t e r a s o p p o s e d t o o n l a n d . M o s t n o t a b l e i s t h e l i g h t i n g c o m p e n s a t i o n n e c e s s a r y i n t h e o c e a n d e p t h s . T h e d e e p e r t h e d e p t h t h e m o r e c o m p e n s a t i o n i s r e q u i r e d f o r d i m i n i s h e d l i g h t . A r t i f i c i a l l i g h t i n g a n d t h e m a n u a l w h i t e l i g h t b a l a n c e f e a t u r e s o f a d i g i t a l c a m e r a p r o v i d e t h e s o l u t i o n . < / P > < P > A l l c o l o r s o b s e r v e d o n l a n d a r e c l e a r l y d e f i n e d b y w h e r e t h e y f a l l i n r e f e r e n c e t o p r i m a r y c o l o r s . T h e p r o p e r t i e s o f n a t u r a l u n d e r w a t e r l i g h t a r e q u i t e d i f f e r e n t . C o l o r f r e q u e n c i e s a r e s o f a r d i f f u s e d t h a t a l l t h a t y o u a r e l e f t w i t h i s b l u e . T h i s s e r v e s t o e x p l a i n w h y w a t e r a p p e a r s b l u i s h w h e n l o o k i n g u p t o w a r d s t h e s k y w h i l e s u b m e r g e d d e e p i n t h e o c e a n . A s a r e s u l t a c a m e r a ' s a u t o m a t i c w h i t e b a l a n c e m a y n o t p r o v i d e t h e n e c e s s a r y a c c u r a c y . N o n - w h i t e o b j e c t s m a y b e p e r c e i v e d a s w h i t e a n d c o r r e c t e d i n a p p r o p r i a t e l y . < / P > < P > B l u i s h t i n t a n d v e r y l i t t l e c o l o r a r e c o m m o n w h e n u s i n g m a n y c o n v e n t i o n a l c a m e r a s f o r u n d e r w a t e r p h o t o g r a p h y . U s i n g t h e m a n u a l w h i t e b a l a n c e s e t t i n g s o n a d i g i t a l c a m e r a c a n h e l p o v e r c o m e t h e s e l i g h t i n g i n a c c u r a c i e s . T h e s e t t i n g u s e d w i l l d e p e n d o n t h e c l a r i t y o f t h e w a t e r . A b a s i c g u i d e l i n e t h a t c o u l d b e u s e d i s : D a y l i g h t m o d e f o r d e p t h s u p t o 1 0 m e t e r s o r f l a s h a s s i s t e d m a c r o s h o t s , C l o u d y s e t t i n g f o r d e e p e r d e p t h s o r w h e n f l a s h a s s i s t e d m a c r o m o d e p r o d u c e s o v e r w h e l m i n g b l u i s h t o n e s . T h i s w i l l h e l p t o b r i n g o u t m o r e v i b r a n t c o l o r s w i t h l e s s b l u e . < / P > < P > S o m e t i m e s a n o t i c e a b l e h a z e a p p e a r s a c r o s s t h e e n t i r e i m a g e . T h i s i s l i g h t r e f l e c t i n g o f f s a n d p a r t i c l e s a n d p l a n k t o n , w h i c h c a n b e r e c t i f i e d b y u s i n g a n e x t e r n a l f l a s h o r v i d e o l i g h t i n s t e a d o f a b u i l t - i n f l a s h . T h e o n l y e x c e p t i o n i s c l o s e - u p m a c r o s h o t s w h e r e t h e c a m e r a i s v e r y c l o s e t o t h e o b j e c t i t a t t e m p t i n g t o c a p t u r e . < / P > < P > T h e u s e o f z o o m s e t t i n g s i s a l s o s i g n i f i c a n t l y d i f f e r e n t i n u n d e r w a t e r p h o t o g r a p h y . A d j u s t m e n t s m u s t b e m a d e t o c o m p e n s a t e f o r l i g h t r e f r a c t i o n w h e r e t h e a i r i n t h e l e n s m e e t s t h e w a t e r . T h i s c o n c e p t c a n m o s t e a s i l y b e d e m o n s t r a t e d b y p u t t i n g a n o b j e c t h a l f - w a y i n t o a g l a s s o f w a t e r a n d o b s e r v i n g t h e d i s t o r t e d a p p e a r a n c e o f t h e s u b m e r g e d p o r t i o n o f t h e o b j e c t . I f u s i n g t h e s a m e z o o m s e t t i n g o n l a n d a s u n d e r w a t e r , a n a r r o w e r f i e l d w i l l r e s u l t s o c o m p e n s a t e a c c o r d i n g l y . < / P > < P > A d j u s t m e n t s i n t h e p o s i t i o n o f t h e c a m e r a m u s t b e m a d e w h e n s h o o t i n g w i d e a n g l e s u n d e r w a t e r . T h e c a m e r a m u s t b e p o s i t i o n e d a t a g r e a t e r d i s t a n c e f r o m t h e o b j e c t t h a n w o u l d b e r e q u i r e d o n l a n d t o a c h i e v e t h e s a m e r e s u l t s . < / P > < P > U n d e r w a t e r d i g i t a l p h o t o g r a p h y c a n e a s i l y b e m a s t e r e d t h r o u g h b a s i c t r i a l a n d e r r o r , e s p e c i a l l y s i n c e y o u d o n ' t h a v e t o p a y f o r r o l l s o f f i l m . T h e o n e t h i n g t h a t m u s t b e k e p t i n m i n d i f y o u r e x c u r s i o n s a r e t o b e a s u c c e s s i s t o m a k e s u r e t h a t y o u r c a m e r a i s a l w a y s s e c u r e l y e n c l o s e d i n t h e w a t e r p r o o f c a s i n g . P e r i o d i c i n s p e c t i o n s o f t h e c a s i n g c a n e n s u r e t h a t e v e r y o n e o f y o u r u n d e r w a t e r a d v e n t u r e s w i l l b e a s g r a t i f y i n g a s t h e l a s t . < / P > |
Author Bio:
Warren Lynch is an expert in this field. Warren has written several articles in the past on this topic. |
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