Professional photography

Professional photography

Professional photography is the occupation of taking pictures and selling them freelance or as part of a contract usually with a publication.

Industry: Photography

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Professional photography

Electronic flash

Photography; Professional photography

Artificial lighting produced by an electronic discharge in a gas filled tube. A single tube can produce a large number of flashes.

Lens having different curvatures at the centre and the edge, each of which forms part of a sphere. The different edge curvature brings the peripheral rays more closely to the same point of focus as ...

Edge numbers

Photography; Professional photography

Reference numbers printed by light at regular intervals along the edge of 35mm and roll films during manufacture.

Linear perspective

Photography; Professional photography

Apparent convergence of parallel lines with increasing distance in a two dimensional image.

Reciprocity failure

Photography; Professional photography

In photographic emulsions occurs when exposure times fall outside a films normal range. At these times an increase in exposure is required in addition to the assessed amount. This can be achieved ...