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Resolution Chart Comparison

Shots here are of our new '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.

Olympus E-510 (5,383 KB; 10 MP) Nikon D40X (2,762 KB, 10 MP)
Canon EOS 400D (2,720 KB, 10 MP) Pentax K10D (2,271 KB; 10 MP)
Sony Alpha DSLR-A100 (2,213 KB; 10 MP)  

Olympus E-510 Nikon D40X
Canon EOS 400D Pentax K10D
Pentax K10D  

Olympus E-510 Nikon D40X
Canon EOS 400D Pentax K10D
Sony Alpha DSLR-A100  

Olympus E-510 Nikon D40X
Canon EOS 400D Pentax K10D
Sony Alpha DSLR-A100  

Measurable results

Camera Measurement
Olympus E-510 Horizontal LPH * 2050  * 2300 
Vertical LPH * 1800  * 2300 
Nikon D40X Horizontal LPH 2200  2300 
Vertical LPH 1800  2300 
Canon EOS 400D Horizontal LPH 2200  2300 
Vertical LPH 1800  2300 
Pentax K10D Horizontal LPH * 2000  * 2300 
Vertical LPH 1800  * 2500 
Sony Alpha DSLR-A100 Horizontal LPH * 2200  2900 
Vertical LPH * 1800  2800 

* Moire 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)

Unsurprisingly the E-510 produces results that are basically identical to the E-410. The E-510 delivers slightly less horizontal resolution (lines per picture height) than its direct competition and also suffers more from moire artifacts at higher frequencies. Using our optimum settings (see below) does deliver better defined edges which push absolute resolution to about 2100/1850 and extends extinction resolution slightly.

Default settings Noise Filter Off, Sharpness -2
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1. I own E-420 & E-510 and both have the same problem with the incorporated flash: doesn't rise up enough so that in the image taken with lens hood mounted will appear a shadow in the lower part of the image.
2. At the E-510 you can delete an image by mistake because the 'play' button & 'delete' button are very close and there is no message to ask if you wanna really delete it.