OK, I've expressed here my reservations about HDTV, at
least as demonstrated at the local Sears and Best Buy
stores, where rows of mediocre pictures can be seen on
various HDTV models, with soft, "globby" images
and
poor text-sharpness passed off as an improvement over
my sharp-looking old 27" and 20" TVs (with one
50"
Pioneer plasma HDTV being about the only exception),
and I've assumed that the lower-than-Mini-DV data-rate
of broadcast HDTV had a lot to do with this, and that if
SD Mini-DV shows "painful" artifacting, that the
much
greater data density (and resultant much higher
compression ratio) of HDTV would look worse. I've
also assumed that the SD-DV I've produced would look
at least OK displayed in the middle of an HDTV
display...
Well, the "light" struck recently when a friend
invited
me over to see his new HDTV theater system. I expected
his relatively-inexpensive LCD projector (a $2000
Panasonic 1/2-1080i resolution one) to show the usual
"chain-link fence" pattern I had seen before, or
the
weak color, mushy definition, low d-max etc. that I
had also seen. We started with a DVD of Star Wars II,
which looked much better than I expected on the 8'x4.5'
grey-painted screen, viewed at about 9' - with surprising
detail (though this looks good on my 27", even off a
VHS tape...), good color, weak blacks (viewed in the dark),
and very low level of compression-artifacting. Next we
looked at a dish-received broadcast of a "flight over
British Columbia". The detail was nothing short of
AMAZING!!! To the corners of the close-viewed 8' screen
(where, BTW, the 16x9 looked "right", and I now
withdraw
my "Bandaid-view" and "slot-view"
comments about
16:9...;-), one could see not only distant trees on
hillsides
crisply-rendered, but the branches! Rock-detail, fences,
distant signs, etc. all looked crisp on this BIG screen!
All was good but the blacks, so I asked if we could
adjust settings (which had been centered). Maxing
the contrast and minimizing the brightness on this
PT-L300U Panasonic projector (total cost of the visual
parts of this system were about $2500 - with a really
good [NOT standard-commercial!] sound-system added...)
about satisfied me for image brilliance, and I enjoyed
flying around BC...!;-) Notable was the COMPLETE LACK
of visible compression and motion artifacting...
We next watched a small Mini-DV production I had made,
using highest-quality 3-CCD "handycam-style"
camcorders.
I had hoped that in a future HDTV era that all my work
in SD DV would look good enough centered on good
HDTV displays. It looked terrible, with annoying
artifacting galore! Color was excellent, but it did
not look sharp (except for the annoying stair-stepping,
"scan-line flapping", etc. I was VERY
disappointed.
It may be that the conversion from 480 lines to 540
lines may have been a problem, and it may be that with
line-doubling and interpolation that a useful output can
be saved, but......, this was very disheartening. I have
seen this material look good on large SD displays,
though, so maybe there is hope...;-)
Next we tried a bit of SD CNN. It looked soft, with
considerable variation in the sharpness of included
video clips (running from soft to mush), but there was
little artifacting (even 340-lines max. looked better
than the 500-lines or so of the best of the SD DV...).
Finally, we watched a dish-received HDTV-broadcast
movie (Ocean's Eleven). By now, I was used to the
VERY-close-to-projected-35mm-look of HDTV, so it was
not a surprise that I was more aware of the film grain
in the original film than I was of the tiny DV pixels
(generally evident only at the edges of diagonal parts
of white text against black...).
Latter I saw an HDTV broadcast of a Spanish street
festival. Moving close to this big screen, the detail
held surprisingly well - I could see stitching in
clothing, read the text on a microphone someone was
holding, look down and see (and be able to identify
some of) the litter in the gutter, etc. This was
SHARP!!! This was FAR BETTER than my Mini-DV efforts.
This is GOOD (but now, what all that effort and money
put into Mini-DV.....?).
Sigh...!
Well, I learned a few things....