Lady Grey 400

Base

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Emulsion

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Spectral sensitivity

Panchromatic ? — what this means

Sensitive to the whole visible spectrum, so colours turn into greys roughly the way the eye weighs them. This is what almost every general-purpose black and white film is. It has to be loaded and developed in complete darkness — no safelight is safe for it.

Grain (RMS)

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Resolving power line pairs / mm

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Maximum density

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Latitude over

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Latitude under

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First released

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A dash means the figure has not been read off a datasheet. Nothing here is estimated.