Panasonic Lumix DMC-FX77 / FX78 Ken McMahon, July 2011
 
 

Panasonic Lumix FX77 / FX78 vs Canon IXUS 310 HS / ELPH 500 HS vs Sony Cyber-shot TX10 Resolution

  Panasonic Lumix FX77 / FX78 results
1 Lumix FX77 / FX78 Resolution
2 Lumix FX77 / FX78 Noise
3 Lumix FX77 / FX78 Sample images

 
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To compare real-life performance when zoomed-out, we shot this scene with the Panasonic Lumix FX77 / FX78, Canon IXUS 310 HS / ELPH 500 HS, and Sony Cyber-shot TX10 within a few moments of each other using their best quality JPEG settings.

The lenses on each camera were set to approximately the same field of view and all three cameras were set to Program auto exposure mode.

The ISO sensitivity was manually set to the lowest available setting on each camera. The Panasonic and Canon were set to 100 ISO and the Sony was set to 125 ISO.

The image above was taken with the Panasonic Lumix FX77 / FX78 with its lens at 4.3mm (24mm equivalent). The camera metered 1/1000 at f2.5 and 100 ISO. The original image measured 4.72MB. The crops are taken from the areas marked with red rectangles and presented here at 100%.

The first thing to say about the Panasonic Lumix FX77 / FX78's performance here is that it has got the exposure slightly wrong, overexposing the scene by about a stop. Obviously, there's good detail in the shadows, but the highlights are clipped - mainly in the top right corner - and the image looks a little washed out.

Looking at the crops, image detail looks to be a little soft, there are no hard edges in the top crop and detail on the grassy hillside looks soft too. The lighthouse in the second crop has disappeared from view, the atmospheric haze and overexposure may be partly to blame, but only partly. Lack of contrast isn't helping, but there's an underlying softness to the edges and fine detail that's merely being exagerrated by the overexposure problem.

You can see this more clearly in the third crop, where the detail in the roof tiles and brickwork lacks definition and, in this crop from the frame edge, there's also a little bit of colour fringing indicative of chromatic aberration. Finally, in the fourth crop, even though the lettering on the banner, like most of the other image detail, is a little soft, it's clearly legible, underlining the fact that these issues are only likely to become apparent on very close examination or if you're making big prints. Overexposure wasn't a persistent problem with the Lumix FX77 / FX78 as you can see from the gallery examples.

Compared with the Canon IXUS 310 HS / ELPH 500 HS, the Panasonic Lumix FX77 / FX78 looks soft, flat and washed out, but it's not as damming as it sounds, if the shot had been correctly exposed only the first of those three would apply. Having said that, there's no arguing with the fact there's a lot more detail in the Canon crops and they're crisper and better defined. If you're looking for negatives you could point to the slight haloing that appears on the horizon of the Canon crops and the colour fringing on the crop from the edge of the frame which is worse than on the Panasonic Lumix FX77 / FX78 crop. But for my money the IXUS 310 HS ELPH 500 HS produces the better results

Compared with the Cyber-shot TX0, the Panasonic Lumix FX77 / FX78 crops look qualitatively different. The Cyber-shot TX10 crops are lacking in detail, but its noise processing algorithms result in pixel clumping rather than softness. The best example of the difference is in the first crop, look at the detail in the rocks at the top of the hill and the wall in front of the chapel. As we've said before, at less then 100 percent view, these differences won't make a great deal of difference, but if you plan to make big prints or crop heavily I think I'd prefer the results from the Panasonic Lumix FX77 / FX78 to the 16.2 Megapixel Cyber-shot TX10.

Now let's see how they compare at higher sensitivities in our High ISO Noise results.

 


Panasonic Lumix FX77 / FX78
 
Canon IXUS 310 HS / ELPH 500 HS
 
Sony Cyber-shot TX10
f2.5, 100 ISO
f2.8 100 ISO
f4.5, 125 ISO
f2.5, 100 ISO
f2.8 100 ISO
f4.5, 125 ISO
f2.5, 100 ISO
f2.8 100 ISO
f4.5, 125 ISO
f2.5, 100 ISO
f2.8 100 ISO
f4.5, 125 ISO


Panasonic Lumix FX77 / FX78 results : Real-life resolution / High ISO Noise




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