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

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