Resolution Chart Comparison

Comparison cameras:

  • Olympus Stylus 800 (8 MP, 3x zoom)
  • Canon PowerShot SD550 (7 MP, 3x zoom)
  • Minolta DiMAGE A200 (8MP, 7x zoom)
  • Fujifilm FinePix F10 Zoom (6 MP, 5x 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.

Olympus Stylus 800 (3,356 KB; 8 MP) Canon PowerShot SD550 (2,444 KB; 7 MP)
Minolta DiMAGE A200 (1,712 KB; 8 MP) Fujifilm FinePix F10 (2,938 KB; 6 MP)

Resolution Chart crops

Olympus Stylus 800 Canon PowerShot SD550
Konica Minolta DiMAGE A200 Fujifilm FinePix F10 Zoom
Olympus Stylus 800 Canon PowerShot SD550
Konica Minolta DiMAGE A200 Fujifilm FinePix F10 Zoom

Measurable findings

Camera Measurement
Olympus Stylus 800 Horiz LPH 1750 + * 2000
Vert LPH * 1700 + * 2000
5° Diagonal LPH + 1000 n/a
Konica Minolta A200 Horiz LPH *1650 *1900 
Vert LPH *1500 *1850 
5° Diagonal LPH #+ 1000  n/a
Fujifilm FinePix F10 Horiz LPH 1650 +2000
Vert LPH 1750 +2000
5° Diagonal LPH + 1000 n/a 
Canon PowerShot SD550 Horiz LPH 1600 1950
Vert LPH * 1700 +* 2000
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)

No doubting there's lots of resolution here - this is obviously lens good enough to show the benefit of those extra million pixels. On the downside the results are far from clean - this test shows clearly the strong edge artefacts mentioned earlier. Whether these are due to demosaicing problems or the combined effect of noise reduction and sharpening (or all three) isn't clear, but what is clear is that there's something wrong here. Ultimately, however, the good news is that for most everyday shots the artefacts are barely visible, certainly not at normal print sizes.