Panasonic Lumix LX7 Ken McMahon, October 2012
 
 

Panasonic LX7 vs Sony RX100 vs Canon G1 X quality

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To compare real-life performance when zoomed-out, I shot this scene with the Panasonic Lumix LX7, the Sony Cyber-shot RX100 and the Canon PowerShot G1 X within a few moments of each other using their best quality JPEG settings; RAW results will follow on the next page.

The zoom settings on the cameras were adjusted to provide an aproximately equal vertical field of view. The G1 X and RX100 were set to their minimum 28mm equivalent focal length. The Lumix LX7 was zoomed in slightly to 28mm equivalent.

All three cameras were set to Aperture priority mode, stabilisation was disabled for this tripod-mounted test and tone enhancement features were left on the default settings.

The ISO sensitivity was manually set to 80 ISO on the Lumix LX7 and Cyber-shot RX100 and 100 ISO on the PowerShot G1 X.

  Panasonic Lumix LX7 results
1 Panasonic LX7 Quality
2 Panasonic LX7 RAW vs JPEG
3 Panasonic LX7 Noise
5 Panasonic LX7 Sample images

The image above was taken with the Panasonic Lumix LX7. The camera was set to Aperture priority mode with the aperture set to f4 and the sensitivity was set to 80 ISO. The Lumix LX7 metered an exposure of 1/800 at f4. I selected f4 as it delivered the most detailed result for the LX7 under these conditions. The sharpest result for the Cyber-shot RX100 and PowerShot G1 X was at f5.6, as you might expect given their larger sensors. Both metered the same exposure, in this case 1/400 at f5.6.

The size of the detail in the crops reflects the different sensor resolutions - in ascending order of size are the 10.1 Megapixel Lumix LX7, followed by the 14.1 Megapixel PowerShot G1 X and finally the 20.2 Megapixel Cyber-shot RX100.

Overall, the level of detail in the Lumix LX7 crops is very good. Starting with the top one you can make out the small details and the people outside the chapel and there's also plenty of detail in the grassy foreground which lesser sensors render as a clumpy green mass. The sky is noise free and the small area of horizon on the left, shows a clean divide between sea and sky.

The lighthouse crop is equaly reassuring. The lighthouse itself is a well defined white cylinder and you can even make out a little detail in the cliffs beyond. In the middle ground of this crop the window frames of the houses are crisp and cleanly defined. The third crop from the edge of the frame is equally impressive with no distortion or chromatic aberration and detail that's only a tiny bit softer than at the centre of the shot.

Finally, the crop from close to the centre of the frame has no surprises. As elsewhere edges are crisp and fine detail is well resolved. Overall this is an excellent result from the Lumix LX7.

Compared with the results from the Sony Cyber-shot RX100 and the Canon PowerShot G1 X, there's not much of a margin in quality terms of quality. If anything, the difference between them is due to the fact that the higher resoution sensors in the Cyber-shot RX100 and PowerShot G1 X are able to resolve more detail. This is most apparent with the 20.2 Megapixel sensor of the Cyber-shot RX100. There's more detail in the chapel in the first crop and you can make out the lamp room in the lighthouse a a distinct element. The roof tiles in the foreground of the second and fourth crops - detail too small to be resolved by the 10.1 Megapixel sensor of the Lumix LX7 provides no problems for the RX100.

It's the same, but to a lesser degree for the 14.1 megapixel sensor of the Canon PowerShot G1 X. Canon's slightly more aggressive processing makes for a slighty more contrasty, grainier appearance, but neither the G1 X, nor the RX100, both of which have larger sensors than the LX7, shows any appreciable signs of noise.

Check out my Panasonic LX7 RAW vs JPEG results on the next page or see how these models compare at higher sensitivities in my Panasonic LX7 Noise results.

 


Panasonic Lumix LX7
 
Sony Cyber-shot RX100
 
Canon PowerShot G1 X
f4, 80 ISO
f5.6, 80 ISO
f5.6, 100 ISO
f4, 80 ISO
f5.6, 80 ISO
f5.6, 100 ISO
f4, 80 ISO
f5.6, 80 ISO
f5.6, 100 ISO
f4, 80 ISO
f5.6, 80 ISO
f5.6, 100 ISO


Panasonic Lumix LX7
results : Quality / RAW vs JPEG / Noise


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