In reality professional photographers are those who have studied one branch of photography thoroughly, and are masters of all its resources and no others. It is not a question of £.s.d., this "professional" and "amateur" question, but a question of knowledge and capacity. An amateur is a dabbler without aim, without knowledge and without capacity, no matter how many of his productions he may sell.

Naturalistic Photography. by Peter Henry, Emerson

ISBN: 0817404015 This book is available from Amazon