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Compared to the Powershot S20 & Nikon Coolpix 950

(Make sure you've read the previous page before reading this one otherwise it won't make much sense)

...Contd. The following scene was shot with each camera from the same tripod, same lighting within minutes of each other. Cameras were set to automatic white balance, JPEG compression set to the best setting.

Interpolated Samples

In the next set of samples each of the second subject images from the Nikon Coolpix 950 and Canon PowerShot S20 were interpolated using PhotoShop Bicubic interpolation to be the same size (2400 x 1800) as the FujiFilm FinePix 4700z image, this gives a better pixel-for-pixel comparison and shows what can be achieved by interpolating upwards. Crops taken at 100%.


Subject Two: Still Life Bottles

Nikon & Canon Images Blown-up (Interpolated)
 
FujiFilm FinePix 4700z
2400 x 1800 Untouched
1,713 KB

 
Nikon Coolpix 950
Interpolated to 2400 x 1800
1,011 KB

 
Canon Powershot S20
Interpolated to 2400 x 1800
1,151 KB

 

Here we can see that at equal resolution the S20 shows much better definition than either of the other cameras (as we'd expect as it's true pixel count is about 1 million more), the 950 has a less smeared image without the aberrations and pixel artifacts of the 4700Z.

FujiFilm 4700z Samples down-sampled to 1600 x 1200

Just for the hell of it I decided to try down-sampling the images to 1600 x 1200 (1.9 megapixels) which is identical to that of the 950, in theory the 4700z should at least match the 950 as it in any case has a 2.4 megapixel CCD.


Subject Two: Still Life Bottles

Fuji image down-sampled
 
FujiFilm FinePix 4700z
Down-sampled to 1600 x 1200
795 KB

 
Nikon Coolpix 950
1600 x 1200 Untouched
726 KB

 

At last! The 4700Z achieves something approaching 950 quality, although detail definition is still not as good. The point here is that we shouldn't need to reduce the image down to 1600 x 1200 for it to look sharp and detailed. SuperCCD 4.3 megapixels? Not really.

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