أفلام أور فوكلور السالبة للتصوير السينمائي .. كتاب التصوير الملون .

Second: Or Folklor negative films for cinematography. Under this designation, films prepared for filming inside the camera, not intended for printing, are included.

The following are exclusive to these films:

(1)

Orwocolor negative film NT. 18.

For photography in daylight or in the light of other artificial sources whose color temperature corresponds to daylight without the need to use filters. This film is made on a scale of 16 mm, Perforated, wrapped on reels prepared for packing in daylight, with lengths of 15 and 30 meters on a plastic core, and its sensitivity is 18 DIN.

(B)

Orwocolor Negative Film NK 18.

To shoot under Tongen lamps or other sources whose color temperature matches these lamps. It is treated as the film shown above, and this film is made with the same dimensions shown for the previous film 18 NT. Its sensitivity is also 18 DIN. with

(c)

Orwo Color Negative Film NC 1

Size: 70 mm, 36 mm, 16 mm.

Identification: No. 432 - and a printed latent image appears on the edges of the film. We read: After showing 1 Orwo Sicherheits film, Orwo si Orwo safety, the color of the rays, other than a. General characteristics: It is a film used for filming in both daylight and artificial light, and in the latter case it is not It requires the use of any optical filter, as its sensor is balanced to suit the light sources whose color temperature is 3200 Kelvin. But if it is used for imaging in daylight, it will be necessary to use a 14 K or 18 K Orfo filter to adjust the temperature. It is absolutely not permissible to mix up the use of lighting sources whose color temperature varies (on the pretext of wanting to illuminate shadow areas, for example). This film is characterized by a wide tolerance that will overcome the results of error in estimating exposure, and it is characterized by increasing the hardness of its gelatin layers. It is possible to control the degree of contrast to a large extent by adjusting the exposure time. Between the film support and the photosensitive layer, there is an intermediate layer of colloidal silver to ensure that the effect of light wear is reduced, which leads to an increase in image sharpness.

Sensitivity speed: It is equivalent to a black and white film with a speed of 16 DIN or 32 ASA or 16 GOST if it is used for filming in artificial light. X = 1.3 only.

Darkroom lighting: Orfo filter No. 170 for darkroom safety light. 19 watts, the distance from the film is not less than 100 cm; This is until the bleaching stage is over, with a lamp