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Compared to... (contd.)

Colour Chart Comparison

Now we can compare the 6800Z to a few of other cameras, using samples from our test archives we will now compare its image quality to the Nikon Coolpix 990,Canon PowerShot G1 and Sony DSC-S75.

Colour charts are shot in daylight, Auto White Balance, EV compensation +0.3 (all cameras), measured light ~10 EV.

Fujifilm FinePix 6800Z Nikon Coolpix 990
Canon PowerShot G1 Sony DSC-S75

It's a tough call, the 6800Z is definetly stronger in reds but it's pipped by our current colour expert the Sony DSC-S75 which manages to pull nice vivid saturation better out of all the colours in the spectrum.

We're only measuring colour here. RGB values below were taken from a VGA reduced image (to average colours and eliminate JPEG artifacts) using the Eyedropper tool in Photoshop with a 5 by 5 Average Sample Size.

 

Fuji FinePix
6800Z

Nikon Coolpix
990
Canon PowerShot
G1
Sony
DSC-S75
Patch White 204,200,193 201,201,201 214,208,208 193,195,194
       
Middle Gray 91,93,89 104,104,104 97,96,102 90,94,95
       
Patch Red 233,28,31 223,52,58 186,33,53 205,0,26
       
Patch Green 5,128,52 5,149,63 26,149,73 34,138,34
       
Patch Blue 21,26,97 60,50,112 55,49,117 31,24,152
       

Resolution Comparison

Shots here are of the PIMA/ISO 12233 standard resolution test chart (more available for comparison in our comparison database). Studio light, cameras set to auto, Exposure compensation +0.7 EV for all cameras. How to read the charts: All values are 1/100 th lines/picture height/width. So the "10" value equates to 1000. Here've thrown in the S1 Pro's resolution chart for comparison purposes.

Fujifilm FinePix 6800Z (6 megapixel file)
Fujifilm FinePix S1 Pro (6 megapixel file)
Nikon Coolpix 990 (3 megapixel)
Canon PowerShot G1 (3 megapixel)
Sony DSC-S75 (3 megapixel)

Measurable findings (three measurements taken for each camera):

Camera Measurement Absolute Res. Extinction Res.
Fujifilm
FinePix 6800Z
Horiz LPH 1200* 1450
Vert LPH 1150* 1400
5o Diagonal LPH 900 n/a
FujiFilm
FinePix S1 Pro
Horiz LPH 1300 1450
Vert LPH 1200 1400
5o Diagonal LPH * 1000 n/a
Nikon
Coolpix 990
Horiz LPH 900 1300
Vert LPH 900 1400
5o Diagonal LPH 900 n/a
Canon
PowerShot G1
Horiz LPH 950 1300
Vert LPH 950 1400
5o Diagonal LPH 900 n/a
Sony
DSC-S75
Horiz LPH 1050 1400
Vert LPH 1050 1500
5o Diagonal LPH 1000 n/a

* with dotted artifacts

Definition of terms:

LPH Lines per Picture Height (to allow for different aspect ratios the measurement is the same for horizontal and vertical)
5o Diagonal Lines set at 5o diagonal
Absolute Resolution Still defined detail (below Nyquist frequency*)
Extinction Resolution Detail beyond camera's definition (becomes a solid gray alias)
n/a Not Available (above the capability of the test chart)
n/v Not Visible (not visible on test results)

* Nyquist frequency defined as the highest spatial frequency where the CCD can still faithfully record
image detail. Beyond the Nyquist frequency aliasing occurs.

Surprising results here, the 6800Z managing to squeeze almost as much resolution out of our chart as its bigger brother the S1 Pro, though that's not to say it does so without introducing some rather funny artifacts which we didn't see on the S1 Pro sample. It's clear by comparing these numerical results with what we've seen in the side-by-side comparison on the previous page that Fujifilm's SuperCCD and processing algorithms are capable of squeezing a little extra detail out of regular patterns (such as the lines on our resolution chart).

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