![Heliopan Series 7 Light Yellow Filter (5)](http://thelafirm.com/cdn/shop/products/qfzrveuttg04ymmpixfx__25823.1676015420_f41312ac-1f85-4b03-a1f1-8168118ad975_{width}x.jpg?v=1705022158)
The Heliopan Series 7 Light Yellow Filter is a basic contrast filter, primarily for use with black and white film, that is primarily used as a haze filter to subtly darken blue tones and increase overall contrast. There is an approximate 1.5-2x filter factor with this filter, requiring an increase of 0.5 to 1 stop for normal exposure. For all outdoor photographs. Small correction to blue sky, improved contrast in distance photographs.