Previous page Next page

Resolution Chart Comparison

Comparison cameras:

  • Fujifilm FinePix F200 EXR (HR Mode, 12 MP, 5x zoom)
  • Fujifilm FinePix F200 EXR (SN Mode, 6 MP, 5x zoom)
  • Panasonic Lumix DMC-LX3 (10 MP, 2.5x zoom)
  • Ricoh CX1 (9MP, 7x zoom)
  • Canon Powershot SD 960 IS (12MP, 4x zoom)

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. Thus a value of 15 equates to 1500 lines per picture height.

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.

Fujifilm FinePix F200 EXR HR (4.2 MB; 12 MP) Fujifilm FinePix F200 EXR SN (2.5 MB; 6 MP)
Panasonic Lumix DMC-LX3 (3.4 MB; 10 MP) Ricoh CX1 (3.0 MB; 9 MP)
 
Canon Powershot SD 960 IS (2.3 MB; 12 MP)  

Resolution Chart crops

Fujifilm FinePix F200 EXR HR Fujifilm FinePix F200 EXR SN
Panasonic Lumix DMC-LX3 Ricoh CX1
 
Canon Powershot SD 960 IS  

 

Fujifilm FinePix F200 EXR HR Fujifilm FinePix F200 EXR SN
Panasonic Lumix DMC-LX3 Ricoh CX1
 
Canon Powershot SD 960 IS  

Measurable findings

Camera Measurement
Absolute
resolution
Extinction
resolution
Fujifilm FinePix F200 EXR
(HR Mode)
Horiz LPH *2500 *2650
Vert LPH *2300 *2550
Fujifilm FinePix F200 EXR
(SN Mode)
Horiz LPH *1700 *1900
Vert LPH *1700 *1900

Panasonic Lumix
DMC-LX3

Horiz LPH 2150 2400
Vert LPH 2150 2500
Ricoh CX1 Horiz LPH 2000 2150
Vert LPH 2000 2200
Canon Powershot
SD 960 IS
Horiz LPH 2300 2450
Vert LPH 2300 2500

* 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)
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)

As we've seen before, the pixel arrangement of the Super CCD lends itself particularly well to resolution charts and the results are pretty spectacular. And 'pretty spectacular' is also a good way of describing the color moiré that it produces too, particularly in horizontal converging lines in high resolution mode. It's unusual for us to see color moiré at absolute resolution, rather than as the camera edges towards extinction.

If you examine the diagonal resolution bars in the top right of the chart you'll see no color moiré is occurring. This certainly suggests that these colorful artefacts are the result of the novel arrangement of EXR sensor's color filter array. Demosaicing artefacts also crop up on the pixel-binned SN image - it's less clear-cut but still likely that these tiny glitches are also a minor side-effect of the EXR sensor's unusual photosite arrangement.

There's none of the color moiré visible in the converging diagonals, even at around 20 LPH, at which point the horizontal lines have distinct red, green and blue artefacts.
In the reduced-resolution mode there are are also slight demosaicing errors in fine repetitive patterns. The probability of these precise conditions being replicated in the real world is small.
Previous page Next page
27
I own it
0
I want it
17
I had it
Discuss in the forums

Comments