The Formatt # 58 Green glass filter is ideal for scenes where it is important to differentiate the green tonal values in black and white photography. Want those red apples on that tree to stand out? The Green 58 will lighten the green leaves even more than a Green 56 and enhance the red in the apples.
Stronger effect than a Green 56
A green filter that produces light foliage on black and white film
Also used for contrast effects (lightens green/darkens red)