
Compared to... (contd.)
Colour Chart Comparison
Now we can compare the Finepix 6900Z to a few of other
cameras. Using samples from our test archives, we will now compare its
image quality to the Nikon Coolpix 995, Canon PowerShot G1 and Sony DSC-S85.
I've thrown the 4 megapixel DSC-S85 in here as an 'upper end' expectation
of resolution.
Colour charts are shot in daylight, Auto White Balance,
EV compensation +0.3 (all cameras), measured light ~10 EV. This test is
also dependent on the accuracy of the camera's auto white balance, the
colour charts are shot in daylight but some camera's white balance is
better than others. All cameras are given 20 seconds to "settle"
before the shot is taken.
 |
 |
| Fujifilm FinePix 6900Z |
Nikon Coolpix 995 |
 |
 |
| Canon PowerShot G1 |
Sony DSC-S85 |
First glance says that Fujifilm's reputation for excellent colour is carried
through to the 6900Z, colour balance is excellent and vivid as is reproduction
of colours across the spectrum. Especially noteworthy are blues, a colour
which normally suffers on consumer digital cameras is coming through accurate
and strong on the 6900Z. A near flawless performance.
In the table below we're only measuring colour. The RGB
values were measured from a VGA reduced image (to average colours, remove
noise and eliminate JPEG artifacts) using the Eyedropper tool in Photoshop
with a 5 by 5 Average Sample Size.
| Patch |
Fujifilm FinePix
6900Z
|
Nikon Coolpix
995
|
Canon
PowerShot
G1 |
Sony
DSC-S85 |
| Black |
37,32,31 |
25,25,23 |
34,32,34 |
17,17,19 |
| |
|
|
|
| Middle Gray |
112,116,112 |
103,103,102 |
97,96,102 |
76,81,79 |
| |
|
|
|
| White |
238,237,227 |
215,215,211 |
214,208,208 |
188,189,189 |
| |
|
|
|
| Magenta |
254,27,119 |
207,38,117 |
204,41,121 |
170,12,124 |
| |
|
|
|
| Red |
255,48,39 |
197,31,50 |
189,31,53 |
176,0,40 |
| |
|
|
|
| Yellow |
253,211,46 |
216,188,36 |
205,193,59 |
181,180,14 |
| |
|
|
|
| Green |
14,153,17 |
8,136,61 |
26,149,73 |
24,131,27 |
| |
|
|
|
| Cyan |
0,174,231 |
52,164,196 |
58,180,230 |
23,158,175 |
| |
|
|
|
| Blue |
33,39,126 |
41,33,84 |
55,49,117 |
23,31,112 |
| |
|
|
|
As you can see the 6900Z really pulls colour out of the test chart. These
are probably the most vivid colours we've seen from our test chart since
we reviewed the S1 Pro. They may, however, not be to everyone's taste
and so I'll reiterate my request for a saturation control on the next
FinePix digital camera.
Resolution 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 8 equates to 800 lines per picture
height.
Studio light, cameras set to auto, all settings factory
default. Exposure compensation +0.7 EV for all cameras.
NOTE: Because of the size difference between the 6mp
6900Z image and the rest I've made the crop taller so you can see the
same area of the chart.
 |
 |
| Fujifilm FinePix 6900Z |
 |
 |
| Nikon Coolpix 995 |
 |
 |
| Canon PowerShot G1 |
 |
 |
| Sony DSC-S85 |
Measurable findings (three measurements taken for each camera):
| Camera |
Measurement |
Absolute Res. |
Extinction Res. |
Fujifilm
FinePix 6900Z |
Horiz LPH |
1150 |
1400 |
| Vert LPH |
1150 |
1450 |
| 5o Diagonal LPH |
900 |
n/a |
Nikon
Coolpix 995 |
Horiz LPH |
*900 |
1300 |
| Vert LPH |
900 |
1400 |
| 5o Diagonal LPH |
900 |
n/a |
Canon
PowerShot G1 |
Horiz LPH |
*950 |
1300 |
| Vert LPH |
*950 |
1400 |
| 5o Diagonal LPH |
*900 |
n/a |
| Sony DSC-S85
|
Horiz LPH |
1200 |
1650 |
| Vert LPH |
1150 |
1650 |
| 5o Diagonal LPH |
1000 |
n/a |
* Moiré is visible
Definition of terms:
| LPH |
Lines per Picture Height (to allow
for different aspect ratios the measurement is the same for horizontal
and vertical) |
| 5o Diagonal |
Lines set at 5o 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 CCD can still faithfully record
image detail. Beyond the Nyquist frequency aliasing occurs.
Very interesting results here, the 6900Z performs very
well on these resolution tests at its 6 megapixel setting. That's probably
thanks in part to the intelligence of its internal processing (enlarging)
algorithm being able to carry the resolution lines through the higher
frequencies.
But let's not to take anything away from the 6900Z,
certainly on this test its combination of lens and SuperCCD do appear
to be delivering resolution which is in line with the best 3 megapixel
digital camera and certainly in the vertical direction up there with the
4 megapixel DSC-S85.
|