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.
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| Nikon D40X |
Canon EOS 400D |
 |
 |
| Olympus E-410 |
Nikon D40 (6 MP) |
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 |
| Nikon D40X |
Canon EOS 400D |
 |
 |
| Olympus E-410 |
Nikon D40 (6 MP) |
 |
 |
| Nikon D40X |
Canon EOS 400D |
 |
 |
| Olympus E-410 |
Nikon D40 (6 MP) |
Measurable results
| Camera |
Measurement |
Absolute
resolution |
Extinction
resolution |
| Nikon D40X |
Horizontal LPH |
2200 |
2300 |
| Vertical LPH |
1800 |
2300 |
| Canon EOS 400D |
Horizontal LPH |
2200 |
2300 |
| Vertical LPH |
1800 |
2300 |
| Olympus E-410 |
Horizontal LPH |
* 2050 |
* 2300 |
| Vertical LPH |
* 1800 |
* 2300 |
| Nikon D40 |
Horizontal LPH |
* 1600 |
* 1850 |
| Vertical LPH |
1550 |
1700 |
| * |
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) |
As expected the D40X delivers the exact same resolution as its more expensive 'prosumer' model the D80, indeed the resolution chart crops look virtually identical to that camera. This 2200/1800 LPH result also in line with the Canon EOS 400D and Sony Alpha DSLR-A100. |
