Now we'll use the data in our review database to compare the S602Z's colour and resolution to three other digital cameras: the Canon PowerShot G2, Sony DSC-S75 and Nikon Coolpix 995.
Colour Chart Comparison
Colour charts are shot in daylight, Auto White Balance, EV compensation +0.3 (all cameras), measured light ~10 EV. This test is also dependent on the accuracy of the camera's auto white balance, the colour charts are shot in daylight but some camera's white balance is better than others. All cameras are given 20 seconds to "settle" before the shot is taken.
|Fujifilm FinePix S602 Zoom||Canon PowerShot G2|
|Sony DSC-S75||Nikon Coolpix 995|
In the table below we're only measuring colour. The RGB values were measured from a VGA reduced image (to average colours, remove noise and eliminate JPEG artifacts) using the Eyedropper tool in Photoshop with a 5 by 5 Average Sample Size.
As we've already noted the S602Z's reds do have a fairly strong orange tinge to them.
Shots here are of the PIMA/ISO 12233 standard resolution test chart (more of which are available in our comparison database). This resolution chart allows us to measure the actual performance of the lens and sensor system. It measures the ability of the camera to resolve lines at gradually higher resolutions and enables us to provide a definitive value for comparison purposes. Values on the chart are 1/100th lines per picture height. So a value of 8 equates to 800 lines per picture height.
Studio light, cameras set to auto, all settings factory default. Exposure compensation +0.7 EV for all cameras.
|Horizontal resolution||Vertical resolution||5 degree diagonal res.|
|Fujifilm FinePix S602 Zoom (6 mp)|
|Canon PowerShot G2 (4 mp)|
|Sony DSC-S75 (3 mp)|
|Nikon Coolpix 995 (3 mp)|
Measurable findings (three measurements taken for each camera):
|Camera||Measurement||Absolute Res.||Extinction Res.|
|Fujifilm FinePix S602Z||Horiz LPH||1200||1400|
|5° Diagonal LPH||900||n/a|
|Canon PowerShot G2||Horiz LPH||1250||* 1450|
|Vert LPH||1200||* 1500|
|5° Diagonal LPH||1000||n/a|
|Sony DSC-S75||Horiz LPH||1050||* 1400|
|Vert LPH||1050||* 1400|
|5° Diagonal LPH||1000||n/a|
|Nikon Coolpix 995||Horiz LPH||* 1000||1300|
|Vert LPH||* 1000||1350|
|5° Diagonal LPH||* 900||n/a|
* Moiré is visible
Definition of terms:
|LPH||Lines per Picture Height (to allow for different aspect ratios the measurement is the same for horizontal and vertical)|
|5° Diagonal||Lines set at 5° 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.
As we've seen before the SuperCCD algorithm does a good job at continuing our resolution chart detail beyond what we'd expect from the 3.1 megapixel sensor. This puts the S602Z's absolute resolution as better than three megapixel and just slightly less than four megapixel.