FILTER INFORMATION

Introduction

Use the filter and color temperature charts in this section as a quick reference and general guide. The values are approximate. They offer good starting points for trial exposures in critical work. For less demanding work, the recommendations may be adequate, but it is always best to run tests before shooting final footage. For photog- raphy with fluorescent lights, see the individual film’s filter information in the section“KODAK Motion Picture Camera Films.”

Types of Filters

Optical filters may be solid, liquid, or gaseous; only solid filters are discussed in this book. These consist mainly of colorants dissolved in a gelatin or in cellulose acetate. Each Kodak filter, gelatin or acetate, is standardized for spectral transmittance and total transmittance by special instruments which apply an optical form of limit gauge to these characteristics.

The dyes are obtained from a number of sources, and many have been synthesized. Like other dyes, the dyes used in filters may, in time, change under certain condi- tions of heat and light. In this publication, we will be addressing only filters for black-and-white films, color compensating, conversion, light balancing, and neutral density (No. 96).

Filters for Black-and-White Films

You can use a wide range of KODAK WRATTEN Filters with black-and-white negative films for many purposes. They vary the contrast and tonal rendering of the subject in a photograph, either to correct to the normal visual appearance or to accentuate special features. The total photographic effect obtained with a particular filter depends on four main factors: its spectral absorption characteristics, the spectral sensitivity of the sensitized material, the color of the subject to be photographed, and the spectral quality of the illuminant.

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Kodak ISBN 0-87985-749-8 manual Introduction, Types of Filters, Filters for Black-and-White Films
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ISBN 0-87985-749-8 specifications

Kodak, a name synonymous with photography, has undergone a tremendous evolution over its long history. The company is not just a pioneer in film and printing technologies but has also embraced the digital age with significant innovations.

One of the prominent features of Kodak’s evolution is its dedication to imaging science, which has remained at the core of its business strategy. Kodak has developed a wide range of film types, including color negative film, color positive film, and black-and-white film, which cater to different photography needs. Each film type comes with unique characteristics designed to optimize image quality, color reproduction, and contrast.

Kodak’s commitment to innovation is evident in its development of digital technologies. The company was an early adopter of digital imaging techniques, launching its first digital camera in the early 1990s. This transition to digital photography focused on making the process more accessible for consumers while maintaining the quality and detail that Kodak is known for. The use of image sensors, such as CCD and CMOS, has allowed Kodak to capture high-resolution images that are rich in detail and color fidelity.

One of the standout technologies associated with Kodak is its printing technology, particularly the dye-sublimation printers. This technique produces high-quality prints by transferring dye onto materials like paper or plastic. Kodak’s printers are known for their rapid print speeds and excellent color reproduction, making them popular for both personal and professional use.

Additionally, Kodak has also made significant strides in the realm of image editing software and applications, which complement its hardware offerings. Programs like Kodak EasyShare and Kodak Gallery have allowed users to edit, organize, and share their photos seamlessly, further enhancing the user experience.

Another important characteristic of Kodak is its steadfast commitment to sustainability. The company has initiated various programs aimed at reducing environmental impact by promoting recycling and energy-efficient practices in its manufacturing processes.

In summary, Kodak’s legacy is a blend of heritage and innovation. From traditional film to cutting-edge digital imaging and sustainable practices, Kodak continues to hold a prominent place in the world of photography. Its technologies and products are a testament to its ability to adapt to changing times while remaining grounded in its core values of quality and consumer accessibility.
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