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Resolution Chart Comparison (JPEG)

Shots here are of our 'version two' resolution chart which provides for measurement of resolution up to 4000 LPH (Lines Per Picture Height). A value of 20 equates to 2000 lines per picture height. 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 aperture priority (optimum aperture selected), image parameters default. Exposure compensation set to deliver approximately 80% luminance of white area.

Leica X1 (4.3 MB; 12 MP) Nikon D300S (3.4 MB; 12 MP)
Panasonic GF1 (4.3 MB, 12.3 MP) Olympus E-P1 (5.4 MB, 12.3 MP)
Canon Powershot G11 (1.6 MB, 10MP) Panasonic LX3 (3.4 MB, 10 MP)

Leica X1 Nikon D300S
Panasonic GF1 Olympus E-P1
Canon Powershot G11 Panasonic LX3

Leica X1 Nikon D300S
Panasonic GF1 Olympus E-P1
Canon Powershot G11 Panasonic LX3

Leica X1 Nikon D300S
Panasonic GF1 Olympus E-P1
Canon Powershot G11 Panasonic LX3

Measurable results

Camera Measurement
Absolute
resolution
Extinction
resolution
Leica X1 Horizontal LPH 2100  2400*
Vertical LPH 2000  2200*
Nikon D300S Horizontal LPH 2200  2500 
Vertical LPH 2100  2600 
Panasonic DMC-GF1 Horizontal LPH 2250  2600 
Vertical LPH 2200  2550 
Olympus E-P1 Horizontal LPH 2300  2750 
Vertical LPH 2250  2650 
Canon PowerShot G11 Horizontal LPH 2000  2250 
Vertical LPH 2050  2400 
Panasonic LX3 Horizontal LPH 2150  2400 
Vertical LPH 2150  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 resolution 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 resolution Detail beyond camera's definition (becomes aliased)

As we've seen before, the X1's JPEGs aren't the best at delivering fine detail, meaning it lags behind the D300S despite having nominally identical resolution. It's also doing worse than either of the Micro Four Thirds cameras (here using the superb Olympus 50mm F2.0) or indeed the 10Mp LX3. The X1's JPEGs show lots of blue and orange color moire in this comparison too; all-in-all a disappointing showing.

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