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Resolution Chart Comparison

Comparison cameras:

  • Kodak DX7590 (5 MP, 10x zoom)
  • Panasonic DMC-FZ20 (5 MP, 12x zoom)
  • Canon PowerShot S60 (5 mp, 4x zoom)
  • Nikon Coolpix 4800 (4 MP, 8.3x zoom)

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. Thus a value of 15 equates to 1500 lines per picture height.

Studio light, cameras set to auto, settings all factory default. If possible aperture was selected for optimum sharpness. Exposure compensation +0.7 EV to +1.3 EV.

Kodak DX7590 (1,418 KB; 5 MP) Canon PowerShot S60 (1,807 KB; 5 MP)
Panasonic DMC-FZ20 (1,846 KB; 5 MP) Nikon Coolpix 4800 (1,324 KB; 4 MP)

Resolution Chart crops

Kodak DX7590 Panasonic DMC-FZ20
Canon PowerShot S60 Nikon Coolpix 4800
Kodak DX7590 Panasonic DMC-FZ20
Canon PowerShot S60 Nikon Coolpix 4800

Measurable findings

Camera Measurement
Absolute
resolution
Extinction
resolution
Kodak DX7590 Horizontal LPH 1100 *1400
Vertical LPH 1200 *1450
5° Diagonal LPH +1000 n/a
Panasonic DMC-FZ20 Horizontal LPH 1350 1650
Vertical LPH 1300 1600
5° Diagonal LPH +1000 n/a
Canon PowerShot S60 Horiz LPH 1450  * 1650 
Vert LPH 1350  * 1700 
5° Diagonal LPH + 1000  n/a 
Nikon Coolpix 4800 Horiz LPH *1200 *1450 
Vert LPH *1250 *1500 
5° Diagonal LPH +1000 n/a

* Moiré is visible
+ Chart maximum
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 res. Point at which all lines of a resolution bar are still visible and defined, beyond this resolution loss of detail occurs (below Nyquist frequency).
Extinction res. Detail beyond camera's definition (becomes aliased)
n/a Not Available (above the capability of the test chart)
n/v Not Visible (not visible on test results)

In terms of pure resolution the DX7590 is towards the lower end of the 5MP scale, though the images are clean and artefact-free.

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