Olympus Photo Safari Group

Hello everyone,

the latest dpreview of the E-620 has highlighted an insensitivity to certain, subtle shades of purple... unfortunately, there wasn't an actual comparison - just a slightly misleading 'perceptual approximation'.

I wondered whether the Sigma DP1 might be a good camera to compare against, to see if we can demonstrate the issue more realistically.

E-P1 + mZD 17mm f2.8 pancake

1/200s f/2.8 at 17.0mm iso200

Developed from raw using Olympus Studio

Olympus E-P1 out of camera jpeg (note - taken later in lower light condition - AWB)

1/40s f/2.8 at 17.0mm iso200

Panasonic G1 + mZD 17mm f2.8 pancake

1/80s f/3.5 at 17.0mm

Developed from raw using Lightzone

Panasonic G1 out of camera jpeg

Sigma DP1

1/25s f/4.0 at 16.6mm iso100

Developed from raw using Sigma Photo Pro 3

The Sigma DP1 has the most dramatic separation of colour - in fact it is more pronounced than the true subject... and the E-P1 and G1 are both very slightly less sensitive to the colour difference than the true subject.

Of the versions above, the Panasonic G1 image converted using Lightzone is the closest to reality as I see it here. The E-P1 developed from raw runs a close second.

The 'fisher price' Panasonic jpeg colour shows the whole subject into the purple zone, and the E-P1 jpeg is also off into the blue zone.

Kind Regards

Brian