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Canon Digital IXUS 100 IS / PowerShot SD780 IS ELPH Gordon Laing, March 2009

Canon IXUS 100 IS / SD780 IS results : Real-life resolution / High ISO Noise


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Canon 100IS / SD780IS vs Panasonic TZ7 / ZS3 vs Fuji F60fd Hi ISO Noise

To compare noise levels under real-life conditions we shot this scene with the Canon IXUS 100 IS / SD780 IS, Panasonic Lumix TZ7 / ZS3 and Fujifilm F60fd within a few moments of each other using each of their ISO settings.

The lenses on each camera were adjusted to deliver the same field of view, as much as their coarse zoom steps would allow.


The image above was taken with the Canon IXUS 100 IS / SD780 IS at a sensitivity of 80 ISO, with the lens set to 7mm (39mm equivalent); the exposure was 0.8 secs at f3.5 and the original Large Fine JPEG file measured 2.22MB. The crops are taken from an area in the centre and presented at 100%. The Panasonic Lumix TZ7 / ZS3 crops show a slightly larger area because of its slightly lower effective resolution than the other two models on test here.

The Canon IXUS 100 IS / SD780 IS and Panasonic Lumix TZ7 / ZS3 kick-off the sequence at 80 ISO, where both cameras deliver good-looking, detailed images. You can also see how Canon’s adopting a punchier approach to image processing with higher sharpening and contrast – arguably a little too much of both, but it certainly does deliver the vibrant images many people like from a compact.

Pixel peepers will however notice a very faint smattering of noise in the background of both crops – it’s very subtle and unlikely to bother anyone, but neither can be described as completely clean even at their lowest sensitivities.

This noise texture becomes more apparent at 100 ISO, although all three cameras (now including the Fuji) are recording lots of detail. At 200 ISO, the noise textures have become clearer and while all three are already showing slightly different strategies to tackling it, there’s nothing to recommend one over another.

With the sensitivity at 400 ISO, all three cameras are visibly suffering more, although in different areas. The Canon’s showing more noise in the upper right grey area than the Panasonic, but the Panasonic is losing more tonal detail on the purple cloth. At 800 ISO there’s a large drop in quality across the board with all three models looking quite mushy. Canon’s noise reduction is smearing out speckles in the background and on the wooden carving, but there’s plenty of patchy artefacts on the material.

At 1600 ISO, the Panasonic and Fujifilm crops show a significant increase in visible noise, and it’s at this point the Canon chooses to really kick-in the noise reduction, eliminating most speckles, but smearing away fine detail with it. At 3200 ISO, the resolution is reduced on all three, although Fujifilm bravely records the largest image at 6 Megapixels – none are pretty though. The F60fd then goes onto offering a 6400 ISO mode at 3 Megapixels, but these higher settings really are for emergency use only.

In our view though there’s no clear winner or loser in this group. Like most compacts these days, there’s evidence of noise artefacts even at the lowest sensitivities if you’re looking for it, and for the best results you should aim to stick at 200 ISO or below. 400 ISO is acceptable for smaller prints or less critical results, but 800 ISO and up are best reserved for online or emergency use. Now head over to our Canon IXUS 100 IS / SD780 IS Gallery to see some more real-life shots in a variety of conditions.


Canon IXUS 100 IS / SD780 IS
Panasonic Lumix DMC-TZ7 / ZS3
Fujifilm FinePix F60fd
    This sensitivity not available
80 ISO
80 ISO
80 ISO not available
         
   
100 ISO
100 ISO
100 ISO
         
   
200 ISO
200 ISO
200 ISO
         
   
400 ISO
400 ISO
400 ISO
         
   
800 ISO
800 ISO
800 ISO
         
   
1600 ISO
1600 ISO
1600 ISO
         
   
3200 ISO (at 2 Megapixels)
2000 ISO (at 3 Megapixels)
3200 ISO (at 6 Megapixels)
         
This sensitivity not available   This sensitivity not available  
6400 ISO not available
Conditions wouldn't allow 6400 ISO
6400 ISO (at 3 Megapixels)


Canon IXUS 100 IS / SD780 IS results : Real-life resolution / High ISO Noise


All words, images, videos and layout, copyright 2005-2014 Gordon Laing. May not be used without permission.

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