Thank you for that clarification, so in the case where one is using the DCR without an Envy, how do you watch 16:9 content on a 2.4:1 screen assuming that you want the height filled and image centred? Panamorph mentions that there is no need to remove the lens for scope and flat.As @hockyAVS points out, with the DCR Lens and the Envy, 16:9 does not make full use of the chip (while 2.40:1 does). This was of concern to me initially, but I have to say that I don't see any problem, or lack of brightness. To avoid this, you would have to remove the DCR Lens, and then rezoom the projector's lens, to make full use of the chip for 16:9. But for most of us, this is impractical, and honestly, I don't feel like I'm "losing out" on anything when watching 16:9 content with the DCR and Envy. It has the same pixel density and appearance as 2.40:1 content, just not going the full width.
There is no barrel distortion when viewing 16:9 content in this fashion, since you are not using the full sides of the chip and lens. Barrel distortion is present to some degree when viewing 2.40:1 content, but we just zoom the image slightly so that those areas get masked in the screen's frame.
And further, Madshi has indicated that he is planning on adding the capability to reduce or eliminate the barrel distortion down the road (for the Extreme version, as of the last I read on this). These future enhancements contributed to my decision to go with the Envy.