Farewell photograph may be the last word in defiance (7,4)

I believe the answer is:

parting shot

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'be the last word in defiance' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'farewell photograph' is the wordplay.
'farewell' becomes 'parting' (synonyms).
'photograph' becomes 'shot' (shot is a kind of photograph).
'parting'+'shot'='PARTING SHOT'

'may' acts as a link.

Can you help me to learn more?

(Another definition for parting shot that I've seen is " Cutting remark on leaving".)

I've seen this clue in The Irish Independent.

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