Affectation using dried fruit with lenses (6,3,6)

I believe the answer is:

prunes and prisms

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'affectation' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'dried fruit with lenses' is the wordplay.
'dried fruit' becomes 'prunes' (I've seen this in another clue).
'with' becomes 'and'.
'lenses' becomes 'prisms' (I can't explain this - if you can you should give a lot more credence to this answer).
'prunes'+'and'+'prisms'='PRUNES AND PRISMS'

'using' acts as a link.

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I've seen this clue in the Sydney Morning Herald.

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