Sony Corp cut its Sales Targets for digital cameras, smartphones and tablets by 13-17 per cent for the year to end-March 2015, but said there were "encouraging" signs of a revival in its electronics business.CEO Kazuo Hirai told a press briefing on Wednesday that Sony would assess a proposal from its biggest shareholder, billionaire Daniel Loeb's Third Point LLC hedge fund, that the group should sell up to a fifth of its music and movies business, which includes artists such as Adele and hit franchises like Spider-Man.Loeb argues a partial spin-off of Sony Entertainment would free up cash to help the struggling electronics division and could boost Sony's stock price by 60 per cent.Third Point's "proposal is one that affects a core part of Sony's business and the direction of our management, so the Sony board will give it thorough consideration before replying to Loeb," Hirai said.