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Canon ELPH 130 IS / IXUS 140 Ken McMahon, November 2013
 
 

Canon IXUS 140 / ELPH 130 IS vs IXUS 255 HS/ ELPH 330 HS vs PowerShot A3500 IS Quality

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To compare real-life performance I shot this scene with the Canon IXUS 140 / ELPH 130 IS, the Canon IXUS 255 HS / ELPH 330 HS and the Canon PowerShot A3500 IS, within a few moments of each other using their best quality JPEG settings.

The IXUS 140 / ELPH 130 IS and the PowerShot A3500 IS were both set to their maximum 28mm equivalent wide angle. The IXUS 255 HS / ELPH 330 HS was zoomed in a little from its maximum 24mm equivalent to provide the same field of view.

For this test all three cameras were set to Program Auto mode. Image stabilisation was turned off and the camera settings were otherwise left on the defaults.

  Canon IXUS 140 / ELPH 130 IS results
1 IXUS 140 / ELPH 130 IS Quality
2 IXUS 140 / ELPH 130 IS Noise
3 IXUS 140 / ELPH 130 IS Sample images

The image above was taken with the Canon IXUS 140 / ELPH 130 IS. The camera was set to Program Auto mode and with the sensitivity set to 100 ISO the IXUS 140 / ELPH 130 IS metered an exposure of 1/250 at f9. At its 80 ISO base sensitivity setting the IXUS 255 HS / ELPH 330 HS selected an exposure of 1/1250 at f3.2 and at 100 ISO the PowerShot A3500 metered 1/320 at f7.9. As usual, the crops are taken from the areas marked in red on the image above.

While there's a reasonably good level of detail in the IXUS 140 / ELPH 130 IS crops, finer detail is obscured by a coarse clumpiness. In the first crop below you can just make out the figures standing outside the chapel and the door and window are visible, but there's not much detail in the stonework and the edge of the surrounding wall is indistinct as is the detail in the foreground grass and rocks.

In the second crop, the lighthouse is recognisable as a white column in the distance but, again, there's an overall graininess obscuring finer image detail. There's a lot of noise in the sea and sky regions and the transition between the two is very soft. The detail in the foreground windows and roofs is a little better, the window frames have sharp, well-defined edges, but the noise is getting in the way of the detail here too. The lack of detail gives the whole thing an impressionistic look.

The third crop, from close to the frame edge fares little better, though there's a slight softness that takes the edge off the noise. There's also noticeable red fringing in this crop. As you might expect, the best results come from the crop that's close to the middle of the frame. But even here there's a lot of visible noise is the sea and sky regions at the top which is also affecting the detail further down.

This is probably a good point at which to say that these 100 percent crops highlight the worst aspects of the IXUS 140 / ELPH 130 IS's 16 Megapixel CCD sensor, but at smaller viewing sizes the image quality looks perfectly fine. It's only when printing at or near 100 percent, in other words making near A2 sized prints, that quality really becomes an issue.

First, let's compare the crops from the IXUS 140 / ELPH 130 IS with those from the PowerShot A3500 in the third column. The two sets of crops look very similar, which is not all that surprising as these two models share the same 16 Megapixel CCD sensor and Digic 4 processor. They don't share the same lens of course, but though the PowerShot A3500 IS has a shorter 5x zoom, there's no apperant difference in lens quality between these two models - they even show a similar degree of chromatic aberration on the third crop.

The IXUS 255 HS / ELPH 330 HS crops in the middle column make for a more interesting comparison though. The 12.1 Megapixel back-illuminated CMOS sensor produces crops with a larger area and smaller detail, but it's clear that the image quality from the lower resolution CMOS sensor is visibly better. In the first crop the figures are more clearly defined, there's more detail in the stonework and grass and the boundary definition is much cleaner. The advantage is equally clear on the other crops, the lighhouse is more distinct, with better detail in the foreground roofs, and the third crop is free of the fringing that affilcts the other two models.

To see how these models compare at higher sensitivities check out my Canon IXUS 140 / ELPH 130 IS Noise results.



Canon IXUS 140 / ELPH 130 IS
 
Canon IXUS 255 HS / ELPH 330 HS
 
Canon PowerShot A3500 IS
f9, 100 ISO
f3.2, 80 ISO
f7.9, 100 ISO
f9, 100 ISO
f3.2, 80 ISO
f7.9, 100 ISO
f9, 100 ISO
f3.2, 80 ISO
f7.9, 100 ISO
f9, 100 ISO
f3.2, 80 ISO
f7.9, 100 ISO



Canon IXUS 140 / ELPH 130 IS
results : Quality / Noise


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