G9 v. DSLRs
Just downloaded and printed best JPEGs forthe Cannon G9 (12mp) and the Nikon D40x (10mp)... and was surprised to see at 11x17" 300dpi print the shadow resolution was noticeably sharper on the G9 print than the Nikon..

According to Brockaert, "...sensors of digital compact cameras are substantially smaller than those of digital SLRs with a similar pixel count. As a consequence, the pixel size is substantially smaller. This explains the lower image quality of digital compact cameras, especially in terms of noise and dynamic range.".

I am much taken with the G9 build quality and compactness, but stayed away in pursuit of the dynamic range of DSLRs. I assumed that the G9 sensor is so much smaller than D40x that the additional 2mp wouldn't make any difference and the much larger Nikon sensor would carry the day..

I just can't accept that the miniscule G9 sensor could hold up against the D40x. Now I am confused, any variables I might be missing?Brian..

Comments (6)

Overall exposure of the scene to begin with... and processing of the JPGs..

Small sensors in cameras like the G9 are noisier than the larger sensors in DSLR cameras. That does not, however, mean that you can't get good pictures with the smaller sensors. Far from it..

The G9 is one of the best digicams out there. For what Canon charges for it, shoudn't you expect good photographs as a given?.

Crime Scene PhotographyA small gallery of personal work:

Comment #1

There's what? A $150 price difference between the 2? The G9 better perform. .

A top end P&S can reach similar IQ to a budget dSLR under the right conditions. Personally, if straight IQ for printing was all I was interested in, I would have had a tough time justifying a dSLR to myself..

Stu - Camera User (see profile for gear)http://www.DigitalPhotoPeople.com


Comment #2

Thus, the defaults tend to go easy on the sharpening, on the assumption that you're likely to have a more complicated workflow in which sharpening is likely one of the last operations..

You -can- set most SLRs to produce a sharpened, punchy out-of-camera JPG. If you use a raw workflow, those sharpening and saturation parameters are actually irrelevant.....

Comment #3

Knock the ISO up and start snapping with the G9 and see what happens..

Also the G9 and many compacts use IS to allow for longer exposures at low ISO. This is fine for static shots, but when things get moving you want a camera you can crank to ISO 800..

If you need to crop a lot, cropping a DSLR image is generally going to give you a better result. The so-called per-pixel-sharpness is better..

Not to knock the G9 - looks lovely and I think probably the best or close to the best compact around. It's also very expensive..

However, if you don't need a compact that can mount an external flash ( which I always find rather an odd idea, given the relative weights and sizes ) or the zoom range, a less expensive camera ( A710 IS or E900 ) would be fine. Probably why I have an E900 ..


Pentax K100DFuji S5200Fuji E900PCLinuxOS..

Comment #4

Let's see your tests so we can judge. Under perfect conditions maybe but in low light, when quick focus is necessary or most other situations the DSLR will beat the P&S..

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Comment #5

Could be. Under good conditions, a good digicam will not necessarily take worse or better pictures, nor would a dslr. So absent knowing all of the conditions of the pictures, we'd just be guessing..

But, even accepting that under a certain set of conditions a digicam might outperform a dslr, that doesn't mean you can expect it to do so under all conditions...

Comment #6

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