GX7 Lens Review on DxO

Started Dec 15, 2013 | Discussions thread
Dimpsey New Member • Posts: 2
Re: GX7 Lens Review on DxO

Been using the GX7 and found:

  1. The GX7's prime 20mm f/1.7 compared with Olympus EPL5's kit zoom 14-42mm - incidentally thinking that's a very good example - the GX7 was sharper at moderate apertures, as expected of a prime vs. zoom comparison.
  2. Stopping the GX7 down to f/16 showed noticeable, pronounced softness, possibly diffraction effect due to small sensor size relative to 35mm full frame. EPL5 suffers similar effect, the drop off a little less pronounced; but then the overall sharpness at f/8 was less too, so this a very subjective view.
  3. Consider the dynamic range of the GX7 to be less than the EPL5, especially in contre-jour landscape shots. Also consider the colour from the GX7 takes more adjustment than the [to me, very] pleasing Olympus palette - again a very subjective view as dependent on eyesight!

On a completely different theme, the difference in straight GX7 jpegs vs. ACR - or Dxo - RAW processing was astonishing, giving a dramatically different-shaped histogram every time. Since the EPL5 can shoot RAW only, have no jpeg comparisons to look at, but will say there's no way I'd want to shoot GX7 jpegs and expect high quality images.

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