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.
Measurable results
Although the differences here are minimal - even taking into account the pixel count differences - it's clear that Olympus has made some significant changes since the last generation of digital SLR. We know the anti alias filter on the sensor has been reduced in strength (hence the resolution jump over the E-620), and that the new TruePic processor has advanced moiré reduction (as evidenced by the very clean results right up to extinction). Whatever the reason, the E-P1 - even here in JPEG mode - really is making the most of its sensor's resolution, and the gap between Olympus Four Thirds cameras and their competitors has been removed. We're not going to include our usual raw resolution comparison until we get official support for the E-P1 in one of our comparison, but as we saw in the raw section of this review (link), with the right software the E-P1 is capable of capturing class-leading levels of detail. |
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