IntroductIon to photography - Carleton University

Introduction to photography

Tips and techniques f o r b e tt e r p h o t o g r a p h y

Photography

JJ G r e e k f o r " p a i n t i n g w i t h l i g h t " JJ C a n b e c o n s i d e r e d b o t h a n a r t

and a science

? Photography is a science, because there are basic principles of physics that govern success

? Photography is art because its beauty is subjective

Tips and techniques

f o r b e tt e r photography

First photograph taken by Joseph Nic?phore Ni?pce in France. in 1826, on a bitumen coated aluminum plate

Tips and techniques

f o r b e tt e r photography

Exposure

Tips and techniques

f o r b e tt e r photography

Stops

JJ T h e a m o u n t o f l i g h t t h a t s t r i k e s the film/chip is measured in stops and is also known as exposure value (Ev)

A JJ d i f f e r e n c e o f 1 s t o p i s a doubling or halving of the light making the image

A JJ s t o p i s u s e d t o m e a s u r e t h e differences in Ev of apertures, s h u tt e r s p e e d s a n d f i l m s p e e d s

JJ " F a s t " m e a n s t h e c a m e r a c a n expose a photo quickly

Tips and techniques

f o r b e tt e r photography

Film Speed

Film

Tips and techniques

f o r b e tt e r photography

Film Speed

JJ F i l m s p e e d i s a m e a s u r e o f t h e sensitivity of the film or sensor in a camera.

JJ It i s m e a s u r e d i n v a l u e s u s i n g a n International Organizations of St a n d a r d s ( ISO ) n u m b e r . U s e d t o b e m e a s u r e d i n A m e r i c a n St a n d a r d s A s s o c i a t i o n s ( ASA ) n u m b e r s

JJ ISO n u m b e r s a r e u s e d i n b o t h film and digital cameras

Tips and techniques

f o r b e tt e r photography

Film Speed

JJ ISO n u m b e r s c o m e i n a w i d e range, but standard numbers are 50, 100, 200, 400, 800, 1600, and 3200

JJ ISO n u m b e r s a r e l i n e a r i n t h e i r relationship

JJ T h e h i g h e r t h e ISO n u m b e r , t h e more sensitive the film/sensor and also the more noise or grain in the image

Tips and techniques

f o r b e tt e r photography

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