Legality of found images

Hi there,

I have a charity client who is running a fundraising drive and are giving away a car, an Apple computer and a branded kitchen appliance.  They've given us images they've found off the internet to use in the marketing collateral. I know they don't have copyright to these; however, would the original photographer have copyright over the content? For example, if a photographer took some photographs of a branded product, without express permission from that brand, would the brand not have any legal comeback? 

If you could let me know, I'd be really grateful.