Why Use A Red Filter For Black And White Photography
Filters can be useful.
Why use a red filter for black and white photography. Pictures of mixed material buildings gain drama and clarity. PaintShop Pro has a Black and White Film effect that lets you apply a colour filter to your image. This happens because this filter turns a blue sky almost black and it makes clouds stand out.
Red filter can produce very strong effects. Real black and white color filters work to filter out other wavelengths of light that dont fall into the color spectrum of the filter. In certain cases it can increase contrast a lot especially in landscape photographs.
The way coloured filters work is that they let in more of a certain type of coloured light the colour of the filter and block the opposing colours. So virtually nothing gets through. Otherwise your prints will come out pretty gray and the skies will all be a washed out cloudless white.
In black white a red filter will lighten up the brick to light shades of grey and will unveil details in the brick that are barely visible in color. With the red filter for example clouds contain a lot of red light because theyre pure white when theyre lit by the sun. The 25A Red filter will make reds a very light gray.
Changing your filter between blue red and green gives a different result. Try it out on a foggy sky above a landscape or when shooting red flowers. Unlike the subtler changes given by yellow and orange filters a red filter can create bold and dramatic effects.
Security meaning the filter was attached to keep anything from coming in contact with the lens and also protected against damage and grime. This means red filters allow red wavelengths to pass blue allows blue etc. Red Green Blue Orange and Yellow are the 5 filters commonly used with black and white photography.