50/50 - standard viewing

Define a standard viewing condition.

Using a cardboard built 4x5" analog foto camera box without further framing help (viewer), except for an air-level and constant positioning at 'belly hight'. Handheld.

Resulting in a straight 50:50 horizon and vertually perfect frontality.

Test comparison of the Berlin Wasteland site and a neighbouring site, a few hundred meters down the river spree.