The Formatt 3 x 3" Light Yellow 6 Filter is commonly used for an increase in contrast with black and white films.

There are occasions when your image needs a subtle nudge - something to bring the contrast up.  The #6  filter is the basic step on the contrast ladder and produces more "snap" in the image. If used with color film, it will render everything yellow producing a more pronounced surreal effect.

• Enhances landscapes, marine scenes and aerial photography with more effect than a Yellow 3 filter
• Especially useful for a noticeable increase in contrast between blue sky with clouds and foreground