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The Formatt 4x4" Yellow 1 Glass Filter for Black & White Film is commonly used for a noticeable increase in contrast with black and white films.
If your print seems a bit "muddy", perhaps it needs a slight bump in contrast. Yellow filters are the first step on the contrast ladder to help that print along. Both scenery and skin tones will show more "snap" once this filter is applied. Contrast filters help with the control of gray tones that appear as light and dark tones in a print.
This filter can also be used to minimize haze during aerial photography.
Note: Formatt Yellow filters are available in grades of 1-3 with 3 having the greatest effect
Especially useful for added contrast between blue sky with clouds and foreground
In the Box
Formatt Hitech 4x4" Yellow 1 Schott-Desag B270 Crown Optical Glass Filter for Black & White Film
Table of Contents
4x4" (100 x 100 x 4mm thick)
2 (+1 stop) (approx)
Contrast control, enhanced skin tones, tonal corrections and more dramatic landscapes; Noticeable increase in contrast with black and white films
Offers the most correct tonal range contrast to produce natural clouds against blue skies