Ilford Delta 3200 135/36

Characteristics of Ilford DELTA 3200 Professional 135-36:

Ilford DELTA 3200 Professional 135-36 is a 36-image professional high-sensitivity black and white panchromatic sensitized negative 35mm film characterized by extremely high sensitivity, great exposure flexibility and wide possibilities for experimentation in processing. The nominal sensitivity of the film is ISO 3200, but its wide exposure flexibility gives very good results even at moderate overexposure (400 ISO) and underexposure (12500 ISO).

Panchromatic films react to reality in a similar way to the human eye, which perceives light rays with wavelengths from approximately 380 nm to 740 nm (visible light), but in some cases can also be sensitive to the UV and IR component of light. It is therefore advisable to have a UV filter on the lens to suppress the effect of radiation on the film material.

In order to achieve the correct sensitivity to the entire spectrum of visible light, this film is sensitized, which guarantees the correct conversion of the colour reality to the grey scale. If the film were not sensitized, it would not be able to respond to light rays of a certain wavelength, and so the resulting photographs would lack some parts of the tonal range. For example, the film would not respond to green, yellow, orange and red, i.e. it would not detect them and on a black and white positive these shades would be black or otherwise dark. Such material finds application mostly only in the field of scientific and industrial photography, where these "deficiencies" are dealt with deliberately.