I agree that like any camera, you can catch some good shots with it.
The challenge lies in what you are then able to do with those shots. Although the G10 has a lot of resolution, I'm not sure if it is 'usable' resolution, if there is such a concept.
Here's an example.
Click here for the full resolution file:
http://www.hackneys.com/travel/photos/2009-02-01-G10-0931.jpg
1/320 sec @ F / 4.5, ISO 400
Both images cropped for composition (full frame, uncropped: 4416 x 3312, this full frame crop: 4398 x 2634).
No processing (no alteration of any kind).
No sharpening.
Take a look at the pixel / grain structure of the image in the full resolution version.
My biggest concern with the camera is the overall noise in the images. Look carefully at the flat/even tone areas in the following example.
Here's the overall shot. No processing/adjustments and no sharpening.
1/100 sec @ f / 2.8, ISO 400
6.1mm (6.1 - 30.5mm)
And here's a full pixel size portion of the image.
1/100 sec @ f / 2.8, ISO 400
6.1mm (6.1 - 30.5mm)
Here are two more examples, this time comparing ISO 125 and ISO 400. Again, there is no processing/adjustments of any kind and no sharpening.
1/250 sec @ F / 2.8, ISO 125
6.1mm (6.1 - 30.5mm)
1/640 sec @ F / 2.8, ISO 400
6.1mm (6.1 - 30.5mm)
Here are two full pixel size sections of the two images.
ISO 125
ISO 400
I think if you keep the ISO low, you will still be able to crop in and use a section of the image, or make large prints. 250 starts to get pretty grainy and 400 looks like sand. Anything higher is an art effect.
I was surprised and, I admit, disappointed that in this stage of digital photography's evolution that this camera had such poor image quality.
We'll just have to wait for a rangefinder 50D, or, even better, a rangefinder 5D. Now that would be something. But why stop there? Why not a rangefinder 1Ds?