Hi there I have a Fujifilm finepix S 5800 and I was wondering if it would be worth getting a new lens for it or just buying a new camera.

You see I buy and sell antiques and jewellery and I need a camera that can take close up pictures of the stones and hallmarks of the jewellery that I sell. Don't get me wrong 9 times out of 10 this camera does pick up the marks and stones but I have noticed that they are a little grainy and not as crisp as I would like them to be.

So would just like some advice really on lens's or maybe a new camera which ever you think is more viable to buy.

Thank you in advance.