Thanks for reminding me. I would not use the 0 contrast setting for the Pioneer, as mentioned on the review. Looking back at it, we sacrificed too much brightness to achieve the ideal gamma response. I will have this corrected.
The uniformity issue looks physical to me and cannot be corrected with settings, although its effect can be reduced. The fact that it is minimised is that you are getting very little light from the screen in the first place!
If you don't have a colorimeter, then you cannot do this `accurately'. You need to eyeball to ballpark values.
1) Use the manual colour temperature to adjust greyscale. Split the greyscale down the middle, RGB high will affect grey in the upper end, and RGB low will do that for the lower end. If you find this difficult, either set the temperature to the warm preset or try to compare the grey colours between manual and warm preset.
2) DVE colour filters are used for adjusting intensity (colour decoding) on colour bars and NOT greyscale. This is very complicated as you must understand that DVE currently has a SD 601 encoded color bar, so it will only apply to SD calibration. You must also ensure that you output in 576i/p to prevent wrong decoding at the TV end. HD calibration will require a HD 709 colour bar, of course.
Use Colour, Tint controls for colour filter test on colour bar.
Use Colour Management with CIE chart and colorimeter. These values, if changed, can affect the colour filter test and greyscale, so you need to come back and forth.
If this is too much, try my settings over default values in the Pioneer and see which you prefer.