So I know they are both black%26amp;white films and they do not react to red light but what is the actual difference between them? I also know orthopancromatic film is less sensitive to the red end of the spectrum than standard pan film does it mean it is more sensitive to red light than orthochromatic film?|||The term orthopanchromatic is used to describe a film with reduced red sensitivity compared to panchromatic film.
Orthochromatic film is sensitive to the spectral range from green to blue|||Orthochromatic is not sensitive to red. Panchromatic is sensitive to all colours, pan means everything. I don't know what is orthopanchromatic (always refering to black and white films)
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