Fujifilm FinePix 6800Z Review. Phil Askey: Digital Photography Review

Compared to... (contd.)

Colour Chart Comparison

Now we can compare the 6800Z to a few of other cameras, using samples from our test archives we will now compare its image quality to the Nikon Coolpix 990,Canon PowerShot G1 and Sony DSC-S75.

Colour charts are shot in daylight, Auto White Balance, EV compensation +0.3 (all cameras), measured light ~10 EV.


Fujifilm FinePix 6800Z	Nikon Coolpix 990

Canon PowerShot G1	Sony DSC-S75

It's a tough call, the 6800Z is definetly stronger in reds but it's pipped by our current colour expert the Sony DSC-S75 which manages to pull nice vivid saturation better out of all the colours in the spectrum.

We're only measuring colour here. RGB values below were taken from a VGA reduced image (to average colours and eliminate JPEG artifacts) using the Eyedropper tool in Photoshop with a 5 by 5 Average Sample Size.

	Fuji FinePix 6800Z	Nikon Coolpix 990	Canon PowerShot G1	Sony DSC-S75
Patch White	204,200,193	201,201,201	214,208,208	193,195,194
Patch White
Middle Gray	91,93,89	104,104,104	97,96,102	90,94,95
Middle Gray
Patch Red	233,28,31	223,52,58	186,33,53	205,0,26
Patch Red
Patch Green	5,128,52	5,149,63	26,149,73	34,138,34
Patch Green
Patch Blue	21,26,97	60,50,112	55,49,117	31,24,152
Patch Blue

Resolution Comparison

Shots here are of the PIMA/ISO 12233 standard resolution test chart (more available for comparison in our comparison database). Studio light, cameras set to auto, Exposure compensation +0.7 EV for all cameras. How to read the charts: All values are 1/100 th lines/picture height/width. So the "10" value equates to 1000. Here've thrown in the S1 Pro's resolution chart for comparison purposes.


Fujifilm FinePix 6800Z (6 megapixel file)

Fujifilm FinePix S1 Pro (6 megapixel file)

Nikon Coolpix 990 (3 megapixel)

Canon PowerShot G1 (3 megapixel)

Sony DSC-S75 (3 megapixel)

Measurable findings (three measurements taken for each camera):

Camera	Measurement	Absolute Res.	Extinction Res.
Fujifilm FinePix 6800Z	Horiz LPH	1200*	1450
	Vert LPH	1150*	1400
	5^o Diagonal LPH	900	n/a
FujiFilm FinePix S1 Pro	Horiz LPH	1300	1450
	Vert LPH	1200	1400
	5^o Diagonal LPH *	1000	n/a
Nikon Coolpix 990	Horiz LPH	900	1300
	Vert LPH	900	1400
	5^o Diagonal LPH	900	n/a
Canon PowerShot G1	Horiz LPH	950	1300
	Vert LPH	950	1400
	5^o Diagonal LPH	900	n/a
Sony DSC-S75	Horiz LPH	1050	1400
	Vert LPH	1050	1500
	5^o Diagonal LPH	1000	n/a

* with dotted 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^o Diagonal	Lines set at 5^o 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.

Surprising results here, the 6800Z managing to squeeze almost as much resolution out of our chart as its bigger brother the S1 Pro, though that's not to say it does so without introducing some rather funny artifacts which we didn't see on the S1 Pro sample. It's clear by comparing these numerical results with what we've seen in the side-by-side comparison on the previous page that Fujifilm's SuperCCD and processing algorithms are capable of squeezing a little extra detail out of regular patterns (such as the lines on our resolution chart).