How To Calculate your own Flash Exposure
The Inverse square Jaw The Inverse square Jaw is the basis for flash exposure calculations. The farther the light travels, the more the light rays spread out and the dimmer the resulting...
View ArticleMore About Flash, How to Position It
Light from any source – a window, a continuously burning lamp, a flash – foltows the same general rule: The light falls off (gets dimmer) the farther the light source is from an object. But light...
View ArticleUsing Flash with Ambient Light
Flash can be used in conjunction with ambient (already existing) light. It can be very useful as a secondary light source to fill in the shadows of natural light, without losing the basic light...
View ArticleCombining Flash and Continuous Light
Fill-in flash uses a combination of flash and daylight to make an exposure. It is useful in strong daylight to fill in shadows formed by existing light. The effect is natural rather than harsh. PDF:...
View ArticleUnderstanding the Lighting Diagrams
Naturally the diagrams should only be taken as a guide, as it is impossible to accurately represent the enormous variety of heads, dishes, softboxes, reflectors and so on that are available, while...
View ArticleThe Main Light, The Strongest Source of Light
The most realistic and usually most pleasing lighting resembles daylight, the light we see most often: one main source of light from above creating a single set of shadows. Lighting seems unrealistic...
View ArticleSimple Portrait Lighting
Many fine portraits have been made using simple lighting setups. You don’t need a complicated arrangement of lights to make a good portrait. In fact, the simpler the setup, the more comfortable and...
View ArticleUsing Artificial Light, Photolamp or Flash
Artificial light sources let you bring your own light with you when the sun goes down, when you photograph in a relatively dark room, or when you need just a little more light than is available...
View ArticleSafe Use of the Bowens Duo 2400 Power Pack
ONLY switch the Pack ‘ON’ AFTER the Flash Heads have been correctly connected. Never disconnect the Flash Head cables with out first switching the power off. High voltage goes through these cables...
View ArticleFill Light to Lighten Shadows
Fill light makes shadows less dark by adding light to them. Photographic materials can record detail and texture in either brightly lit areas or deeply shadowed ones but generally not in both at the...
View ArticleLight
Visible light is a stream of energy radiating from a light source (the sun or a lamp). There are four main characteristics of light: … PDF: Light
View ArticleColour and Light
Light consists of wave and particles as part of the Electromagnetic Spectrum. Light + Wavelength = Colour. The human eyes are sensitive to 400-700nm. Film is sensitive to infra red (250nm). … PDF:...
View ArticleWhite Light
White light, such as that from the sun, contains all the colours of the spectrum. Pass light throught the prism and it will brake into the rainbows of colours. … PDF: White Light
View ArticleThe Kelvin Temperature Scale
The following table shows the correlated colour temperature of common light sources: Color Temperature Light Source 1000-2000 K Candlelight 2500-3500 K Tungsten Bulb (household variety) 3000-4000 K...
View ArticleColor Theory
Color theory encompasses a multitude of definitions, concepts and design applications. All the information would fill several encyclopaedias. As an introduction, here are a few basic concepts. PDF:...
View ArticleHow Camera Materials Work
This chapter discusses how our light-sensitive camera materials work, especially colour films. It traces the way that ingenious principles have been put into practice and compares how films record...
View ArticleMixed Lighting Indoors
How do you utilise mixed lighting indoors? What problem arise and how can you solve them? This article by David Askham will give some of the answers, based on the author’s experience in a wide range...
View ArticleHow Colour Films Produce Colours
Colour Film consists of three light sensitive layers. Each of which responds to about one-third of the colours in the light spectrum. Each layer is matched to a primary colour dye that is built into...
View ArticleExposing Scenes that are Lighter or Darker than Average
Scenes that are light overall, such as a snow scene, can look too dark in the final photograph if you make just an overall reading or let an automatic camera make one for you. The reason is that...
View Article
