I take it field scaling will inherently need to happen if you use your scaler to resize the pic, even if 1080i is kept to 1080i, in and out. One way or the other your setup is going to be using the DVDO''s field scaling if you're using it to defeat the overscan. Otherwise it would be direct passthru, with no sizing changes.
My question would be what would look better: your overscan reduction using the scaler and all its conversions, or my shimming op reducing the overscan with the resultant distortion cleaned up again via a complete refocusing, re-geometry and reconvergence, completely restoring all crispness formerly there before the overscan reduction op. Usually better, actually.
I get to maintain the amount of CRT screenface used, you lose the use of part of your CRTs, all 3 of them, with the DVDO processor method of shrinking the picture to its proper size. I keep my 1080i preserved and untouched by any processing, straight thru, while your method guarantees a certain amount of processing being inserted into the mix.
I would love to see your setup, and yes if I am in your area I will definitely want to stop by! Get a few owners together and let's do a calibration tour for your area. I do all formats of calibration - CRT DLP D-ILA LCOS SXRD and LCD projection, plasma and LCD flat panels - even did a 4K flat panel the other day! - and am also available for optics cleanings on all projection modalities - CRT, DLP, D-ILA, SXRD etc. Most projection owners are by now experiencing exactly what CRT owners did as the years progressed - they thought their sets were worn out while all that was really needed to get past that slowly-embedded bleariness that finally after years and years becomes blatantly visible was a thorough optics cleaning! If you're reading this and your set has gone bleary over the years and it's a projection modality, you don't need a new set. You simply need my clarity-restoring, crystal clear light path optics cleaning ops. That part of what R&B Electronics in Redwood City calls The Sparkle Process,
based on feedback from their customers after my working on their sets.
And of course if you're in the SF Bay Area, please stop by and see my setup!
bEdited by Mr Bob - 5/17/13 at 10:42am