Compared to...Resolution ComparisonShots 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 between +0.7 and +1.0 EV to compensate for the white chart. Click on the camera name below the crops to download the full resolution chart (large JPEG's).
Measurable findings (three measurements taken for each camera)
* Moiré is visible, + Chart maximum, # Jagged diagonals Definition of terms
image detail. Beyond the Nyquist frequency aliasing occurs. In joint first places comes the Sony DSC-V3 and Olympus C-7000 Zoom which produced 1650 LPH horizontally and 1550 LPH vertically, which is really not far off the kind of resolution we got out of the eight megapixel digital cameras we tested earlier in the year. On the downside the C-7000 did exhibit moire at higher resolutions. After this the Canon G6 and Casio EX-P700 both delivered similar resolution, the G6 could have done more if it hadn't been for the 'shallow jaggies' which affected our reading of vertical resolution. Just like the C-7000 the P700 also exhibited some fairly strong moire. In a resounding last place was the Pentax Optio 750Z whose lens really let it down it was unable to produce much more resolution than we'd expect from a five megapixel digital camera. |
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