Resolution Chart Comparison
Comparison cameras:
- Olympus SP-550UZ (7MP, 18x zoom)
- Panasonic DMC-FZ8 (7 MP, 12 x zoom)
- Sony DSC-H5 (7.2 MP, 12x zoom)
- Canon PowerShot S3 IS (6 MP, 12x zoom)
Shots here are of our standard resolution chart (version one or two). This 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 15 equates to 1500 lines per picture height. (Note that on version two of our chart the vertical resolution 1000 - 2000 lines have been horizontally flipped but are otherwise identical). For each camera the relevant prime lens was used. The chart is shot at a full range of apertures and the sharpest image selected.
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.
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| Olympus SP-550UZ (3,287 KB; 7 MP) | Canon S3 IS (2,116 KB; 6 MP) |
|---|---|
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| Panasonic DMC-FZ8 (3,379 KB; 7 MP) | Sony DSC-H5 (2,675 KB; 7.2 MP) |
Resolution Chart Crops
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| Olympus SP-550UZ | Canon S3 IS |
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| Panasonic DMC-FZ8 | Sony DSC-H5 |
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| Olympus SP-550UZ | Canon S3 IS |
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| Panasonic DMC-FZ8 | Sony DSC-H5 |
Measurable findings
| Camera | Measurement | Absolute resolution |
Extinction resolution |
|---|---|---|---|
| Olympus SP-550UZ | Horizontal LPH | 1350 | 1750* |
| Vertical LPH | 1400 | 1850* | |
| 5° Diagonal LPH | +1000 | n/a | |
| Sony DSC-H5 | Horizontal LPH | 1525 | 2000 |
| Vertical LPH | 1550 | *2000 | |
| 5° Diagonal LPH | +1000 | n/a | |
| Canon PowerShot S3 IS | Horizontal LPH | 1400 | *1700 |
| Vertical LPH | 1450 | *1850 | |
| 5° Diagonal LPH | +1000 ‡ | n/a | |
| Panasonic DMC-FZ8 | Horizontal LPH | 1600 | 2100 |
| Vertical LPH | 1550 | 2050 | |
| 5° Diagonal LPH | +1000 | n/a |
| * | Moiré is visible |
|---|---|
| + | Chart maximum |
| ‡ | Jagged diagonals |
| 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) |
Resolution isn't quite up with the best cameras in this class - the Panasonic FZ8 in particular knocks spots off it - and there is some moiré visible at higher frequencies, but you can get better results using raw. If you open the full size resolution chart you can clearly see both chromatic aberration and purple fringing when viewed at 100%.
