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The "brown" in the name of this process gives you some idea of the colour of the finished print -although tones tend to be delicate rather than heavy - so clear, graphic images tend to work best.The process involves combining iron salts with silver nitrate and either oxalic acid for a warm-brown colour or tartaric acid for brown-black result. Tightly-woven fabrics can be a better base than paper, as the finished "print" must be washed in water. Exposure is by contact printing, but, because of the relatively high sensitivity of the medium to light, you should work in dim conditions, and give an exposure of around 1 minute in sunlight.Develop the image in a 1% borax solution, fix it in traditional hypo, and give a final wash of at least 30 minutes.
A lighting control that lets you fine tune the output of flash. This comes in useful when space is limited and you can't move lights back and forth or you want to adjust the exposure of one units when used in a set to balance the exposure.
Black & white printing paper that changes contrast when exposed to different coloured light. A yellow filtered light produces lower contrast, while magenta increases contrast.
The resolution of a monitor or camera CCD that displays or records images with 640x480 pixels.
Some digital cameras have a sequence mode that takes moving images. The length of movie sequence depends on the camera and results can be played back using a movie player like QuickTime and edited using software such as MGIs Video Wave.
Indicates whether the camera can be connected to a TV to view the results. If it has PAL it can be played on UK-televisions or NTSC for US. Image quality looks as good as it would on a computer screen and if the camera has a slide show mode it can be left to run through all the pictures stored in the camera's memory or card.
A medium or large format camera that uses a ground glass screen positioned at the film plane to view the image. Theyre also known as field cameras.
This is what you look through to help point the camera in the right direction when taking a photo. SLR cameras have accurate through the lens viewing so what you see is what the lens sees. Compact, rangefinder and digital cameras have a separate viewfinder that is often less accurate at close range. Some cameras have an adjustment to change the eyepiece to suit your vision. Some have an accessory slot where a small correction lens can be attached.
The position where you take the photograph from.
An image with an edge that gradually fades to black or white. Used mainly by wedding and portrait photographers either created by on-camera filters, using masks in the darkroom or digitally using software.
A graphics card thats built into a computer to control how many colours are seen on the monitor.