I recently visited the Australian War Memorial in Canberra and watched two presentations which looked to be Watchout or Wings content across three projectors each.

The second, newer presentation looked (from a distance) to be using projectiondesign F30 projectors, and the image (mostly 3D animation) looked pretty good – however I did notice the gamma ramp in the blend region, which prompted me to comment on using single chip DLP projectors for edge blending.

The projectiondesign single chip DLP’s have a setting called ‘Color Boost’, which is designed to push the gamma curve settings to get the punchiest image from the projector – but at the cost of accurate colour and gradient representation.

This seriously affects an edge blend, as the gradient between projectors appears ‘stepped’ rather than smooth:

[caption id="attachment_112" align="alignright" width="30" caption="Steppend Blend"][/caption]

In my experience, when using a single chip DLP projector for edge blends, any colour boost or image/level management features should be disabled so the image appears ‘natural’ – even if this costs light output.

On the projectiondesign F30 units, I have found that setting the ‘Color Boost’ feature to ‘3’ will give an adequate balance between accuracy and intensity.