Hi, I have just bought a for £200 but am considering taking it back for a g3, which is £320. I've ordered the oly 45 to go with my camera. Is the swap worth the price difference (not massive I know) but I have read there is quite a difference in iq between the two.
Any advice would be appreciated.

Welcome :)

I think I would do the swap (I have a GF3 myself, though I'm planning to sell it soon).

Shooting outside in the sun will be much easier with a viewfinder which is something you don't have and can't add to the GF3. And then there's the sensor difference to consider.

In favour of the GF3 it's so tiny that you can easily pocket it with a pancake lens on the front.

Thank you, think I'm leaning that way. Do you think I'll see a good imProvemEnt with the oly 45, as with the kit lens I have lots of blurry shots.

You should do, in part because it's a faster (brighter) lens and will let in more light so you can use a higher shutter speed. Using a camera with a viewfinder might also help stabilise things and reduce blur caused by camera shake. Personally, having used it for a year or so, I wouldn't be without the Olympus in body image stabilisation stabilisation (IBIS) and prefer an old E-PL1 to the GF3 - apart from the slower focusing. I've not used a G3 though so I can't usefully comment on the controls and ergonomics but the viewfinder and better low light performance would make me choose it over the GF3.

Yes, you should definitely make the swap. Yes there's a difference in IQ, but that's only the tip of the iceberg. The functionality of the G3 is much better.

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The G3 & GF3 are two very different cameras, the G3 is more of a serious camera and does have a better sensor and a lot more features as everyone has stated. I find the GF3 more of a fun camera and with a pancake lens on, it's easy to put into a jacket pocket for nights out or for street or candid shots.
The Oly 45mm lens is a cracker and works very well with any M4/3 camera.

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Darren

Thanks everyone, your posts have been really helpful, with most suggesting the upgrade. Once I receive the oly lens I will see how I feel about the gf3. Taking pics of small children is challenging for a novice and I need all the advantages I can afford!

What Ned said. I have a G3 and it has really good image quality, a great EVF and the rotating screen is very useful. It also has a hot shoe and a camera without access to a more powerful flash doesn't leave much room to grow. The GF3 is a nice camera but for that small price difference I would switch.

G3 is the choice.

Great to see you are back, Ned.