Resolution Chart Comparison
Comparison cameras:
- Canon PowerShot SD450 (5 MP, 3x zoom)
- Panasonic DMC-FX7 (5 MP, 3x zoom)
- Nikon Coolpix 5200 (5 MP, 3x zoom)
- Pentax Optio S5i (5 MP, 3x 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.
Resolution Chart crops
|
|
| Canon PowerShot SD450 |
Nikon Coolpix 5200 |
|
|
| Pentax Optio S5i |
Panasonic DMC-FX7 |
 |
 |
 |
| Canon PowerShot SD450 |
Nikon Coolpix 5200 |
 |
 |
| Pentax Optio S5i |
Panasonic DMC-FX7 |
Measurable findings
| Camera |
Measurement |
Absolute
resolution |
Extinction
resolution |
| Canon PowerShot SD450 (Ixus 55) |
Horizontal LPH |
1400 |
1600 |
| Vertical LPH |
*1400 |
*1750 |
| 5° Diagonal LPH |
+1000 |
n/a |
| Panasonic DMC-FX7 |
Horizontal LPH |
1450 |
1700 |
| Vertical LPH |
1400 |
1600 |
| 5° Diagonal LPH |
+1000 |
n/a |
| Pentax Optio S5i |
Horizontal LPH |
*1250 |
*1500 |
| Vertical LPH |
*1200 |
*1450 |
| 5° Diagonal LPH |
*+1000 |
n/a |
| Nikon Coolpix 5200 |
Horizontal LPH |
1400 |
*1650 |
| Vertical LPH |
1350 |
*1650 |
| 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 surprises here - the SD450, like the SD400 before it, offers slightly higher than average resolution for a camera in this class, though there's not a lot in it. They're not the cleanest results here - there is some moiré visible at higher frequencies and high frequency diagonals are slightly jagged, but there's plenty of detail being captured and the results are as good as we can expect from this sensor and lens combination.
|
Please wait, fetching latest prices.
Digg
del.icio.us
Reddit
Google