Old film from Germany, equally amusing (8)

I believe the answer is:

gaslight

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'old film' is the definition.
(I've seen this before)

'germany equally amusing' is the wordplay.
'germany' becomes 'g' (this could be a standard abbreviation of which I'm unaware).
'equally' becomes 'as' (synonyms).
'amusing' becomes 'light' (I've seen this before).
'g'+'as'+'light'='GASLIGHT'

'from' acts as a link.

Can you help me to learn more?

(Other definitions for gaslight that I've seen before include "Sort of illumination" , "Old form of illumination" , "Old-fashioned illumination" , "Old film" , "Bergman film" .)

I've seen this clue in The Times and The Sunday Times.

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