Resolution Chart Comparison
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. So a value of 15 equates to 1500 lines per picture
height.
Studio light (continuous), cameras set to auto, all
settings factory default. Aperture selected for optimum sharpness.
Exposure compensation +0.7 EV to +1.3 EV.
 |
 |
| Kodak DCS-14n |
Canon EOS-1Ds |
 |
 |
| Canon EOS-10D |
Fujifilm S2 Pro (12 mp size) |
 |
 |
| Kodak DCS-14n |
Canon EOS-1Ds |
 |
 |
| Canon EOS-10D |
Fujifilm S2 Pro (12 mp size) |
 |
 |
| Kodak DCS-14n |
Canon EOS-1Ds |
 |
 |
| Canon EOS-10D |
Fujifilm S2 Pro (12 mp size) |
 |
 |
| Kodak DCS-14n |
Canon EOS-1Ds |
 |
 |
| Canon EOS-10D |
Fujifilm S2 Pro (12 mp size) |
 |
 |
| Kodak DCS-14n |
Canon EOS-1Ds |
 |
 |
| Canon EOS-10D |
Fujifilm S2 Pro (12 mp size) |
 |
 |
| Kodak DCS-14n |
Canon EOS-1Ds |
 |
 |
| Canon EOS-10D |
Fujifilm S2 Pro (12 mp size) |
Beyond our chart, but not beyond our means
As we expected the DCS-14n has resolution way beyond the capabilities
of our standard resolution chart, well almost. We can shoot the chart
from a farther subject distance so that the chart is exactly half its
normal size (2250 x 1500 on the 4500 x 3000 frame - indicated by the red
box in the thumbnail below). This allows us to measure resolution up to
4000 LPH. When reading the crops below values on the chart now represent
1/200th lines per picture height. So a value of 15 equates
to 3000 lines per picture height.
Measurable findings (three measurements taken for each camera):
| Camera |
Measurement |
Absolute Res. |
Extinction Res. |
| Kodak
DCS-14n |
Horiz LPH |
2500 |
* 2800 |
| Vert LPH |
2300 |
* 2700 |
| 5° Diagonal LPH |
2000 |
n/a |
| Canon
EOS-1Ds |
Horiz LPH |
2400 |
* 2600 |
| Vert LPH |
2000 |
* 2600 |
| 5° Diagonal LPH |
2000 |
n/a |
| Canon
EOS-10D |
Horiz LPH |
1600 |
1900 |
| Vert LPH |
1450 |
1850 |
| 5° Diagonal LPH |
1000 |
n/a |
Fujifilm
S2 Pro
(12 mp size) |
Horiz LPH |
1800 |
2000 |
| Vert LPH |
1700 |
2000 |
| 5° Diagonal LPH |
1000 |
n/a |
* Visible moiré / alias artifacts
Definition of terms:
| 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 Resolution |
Still defined
detail (below Nyquist frequency*) |
| Extinction
Resolution |
Detail beyond
camera's definition (becomes a solid gray alias) |
| n/a |
Not Available
(above the capability of the test chart) |
| n/v |
Not Visible
(not visible on test results) |
* Nyquist frequency defined as the
highest spatial frequency where the sensor can
still faithfully record image detail. Beyond the Nyquist frequency aliasing
occurs
The DCS-14n takes the 'resolution king' crown from the
EOS-1Ds, there's a subtle improvement in horizontal resolution and a more
noticeable improvement in vertical resolution. Extinction of detail occurs
at a higher resolution which will also give the illusion of fine details,
for example in distant shot trees (assuming Kodak's noise reduction system
doesn't smooth them away).
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