G7 vs G9

Hello all,

I have a G7 and i am very happy with the iq of it. It doesnt look like new, got some beatings, fellt to the concrete but its still working very fine

Question, is the G9 better, yes it has RAW but what about the IQ if you shoot JPG?

Greetings!

I went through almost the very same questions a while back, and I still have my G7...

Here's that thread - it was really helpful to me:

Any reason not to upgrade from G7 to G9?

Here's the short version:

JohnJ80 wrote in post #4958287
If you shoot jpg then the G7 is a better choice because of the lower density sensor. If you shoot raw you will get better results from the G9 over G7. Heck, I'd rather have a G7 sensor in the G9 than the one that is there (less noisy). The G9's jpg conversion is not as good as the G7's, IMO.

J.

The G7 and the G9 have the same sensor, while the G9 packs more megapixels into it (and therefore reduces IQ).

Juniors G7 wrote in post #5770498
=Junior's G7;5770498]
The G7 and the G9 have the same sensor, while the G9 packs more megapixels into it (and therefore reduces IQ).

For people asking that question ("upgrade" to G9 from G7 but don't care about RAW), I always say to keep the G7. However, the G7 and G9 do not use the same sensor. The G9 sensor is slightly larger in addition to having more pixels. IQ is apparently about the same when using the camera on auto and comparing in-camera jpgs although some prefer the G7 and some prefer the G9.

GordonSBuck wrote in post #5770628
The G9 sensor is slightly larger in addition to having more pixels.

Where do you see that? I've heard up and down that they have the same sensor.

I don't believe I've ever seen proof one way or another, though - but I've been looking.

From the DPR review...

The G9 is an incremental upgrade in the truest sense; externally the body is almost identical, and there are only three really key changes; the raw mode, the screen and the sensor.

Higher resolution (12MP vs 10MP)
Slightly larger sensor (1/1.7 as opposed to 1/1.8 inch)
Redesigned front grip and rear thumb rest
Enhanced Face Detection technology
Red-eye correction in playback
Auto ISO shift
Compatibility with ST-E2 wireless flash transmitter
Marginally better battery life (240 shots vs 220 shots, CIPA standard)
Two custom White Balance settings (as opposed to one)

^^ Thank you.

I *think* the G9 also lets you scroll through a movie during playback on the camera, whereas the G7 does not. Could be wrong about that, but it seems like I was able to do it with my loaner G9, and I haven't been able to repeat it with my G7.

Juniors G7 wrote in post #5770801
=Junior's G7;5770801]Where do you see that? I've heard up and down that they have the same sensor.

I don't believe I've ever seen proof one way or another, though - but I've been looking.

Even if they did have the same size sensor, with different resolutions, it would still be wrong to refer to them as having the same sensor. The higher resolution version could be more than simply cramming more smaller pixels in to the same basic sensor design.

emorphien wrote in post #5771072
Even if they did have the same size sensor, with different resolutions, it would still be wrong to refer to them as having the same sensor.

But if the sensors *were* physically the same, I would refer to them as being the same. The resultant image quality would be different, due to the pixel count, but the same sensor is the same sensor.

That's exactly what happens, and that was my point originally - that if the sensors are the same, one having a higher megapixel resolution would result in less clarity (rather, more digital noise). EDIT: I misread your post, and missed where you said "could be more than..."

That's still effectively the case - the sensors are *slightly* different in size, and *significantly* different in resolution - i.e. the image quality on the G9 will be less than that of the G7.

Juniors G7 wrote in post #5771128
=Junior's G7;5771128]But if the sensors *were* physically the same, I would refer to them as being the same. The resultant image quality would be different, due to the pixel count, but the same sensor is the same sensor.

Physically the same size doesn't guarantee many other similarities.

Yes and no, not necessarily. The sensor in a new 1Ds may be the same size as the sensor in the original 1Ds, but they are nowhere near the same. The design and manufacture have changed, the features on the sensor have changed. That's why I'm saying calling two sensors of the same size the same is wrong.

OK, point out to me where I said "same size sensor".

You're arguing that "same size" does not equate to "same sensor". Nowhere did I indicate that I thought it did. You keep saying "same size sensor". I never have.

I was saying that I thought they were the SAME SENSOR - it's been pointed out that they in fact are not.

Isn't that what you were implying by saying "same sensor" earlier? Additionally, you were surprised when someone pointed out the fact that they are not the same size. Seems to be that's what you were implying by "same sensor" because otherwise what else would you have meant?

Size is part of it, as we've both agreed. But I'm being asked to defend a point I never made.

Shake hands and call it good?

Fair enough. I'm not sure what point you were trying to make then.

In short, upgrading is out of the question then.

Greetings

I'm not sure it's a significant change. I have never used a P&S in which I consider RAW a large advantage personally, not like it is in a DSLR.