[comp.sys.amiga.graphics] some DCTV clarifications

hrlaser@crash.cts.com (Harv Laser) (03/09/91)

In reading notices posted here by non-DCTV owners who seem somewhat
confused about what DCTV is and how it interfaces to your Amiga, as a
DCTV owner for a month now (and having no relationship with 
Digital Creations), I'll try to clarify a couple points of confusion:

1) DCTV's display is NTSC.  This is color television. If you like the
way color television looks, then you'll like the way DCTV looks.

2) DCTV can digitize from any color NTSC source.  Such sources would
include, but not necessarily be limited to: color cameras, color
camcorders, VCRs, LaserDisc players, Still Video camers (Xapshot, etc.).

3) DCTV is a "slow scan" digitizer, not a framegrabber. You cannot
grab from a running video tape. Your NTSC color source has to be
either frozen or paused solidly for 6-10 seconds in order for DCTV to
digitize it. 

4) DCTV connects to your Amiga's RGB output port and its connector
has a passthru on it to which you connect your Amiga's RGB monitor. 
If you want to digitize with DCTV you also connect it via a 2nd
cable (supplied) to your parallel port. If you don't, you don't. 

5) DCTV's NTSC color OUTPUT is fed via a cable from the DCTV box
back to the "composite IN" or "video IN" jack on the back of your
standard Amiga 1080/1084 type monitor. If your particular monitor
doesn't have composite/NTSC video IN then you'll need a second
monitor which does, or a TV set with video input.  For 1080/1084
owners it's trivial to switch between normal Amiga RGB display and
DCTV's NTSC display, once you're all hooked up, with the switch
behind the door in the front of the 1080/1084 monitor. 

6) DCTV's software comes in two flavors. If you are short on memory
you run two smaller programs - the digitize/process program OR the
paint program. If you have memory aplenty then you run the larger
version of the software which combines ALL f unctions into one
larger program. Both versions of the software are supplied in
every DCTV package.

7) Color "banding" is almost impossible on DCTV. Ray Trace fiends
will love the results of the IFF24 output of their ray tracers when
imported to DCTV and displayed.  Fans of scanned or digitized pijnup
errr pinup art will too. You don't need dithering to make up for a
lack of colors when you have millions of colors with which to work. 
Smooth areas of human skin in digitized pictures take on a whole
new life, as it were, when you have millions of colors to play with.

8) DCTV can import *ANY* Amiga graphics file format but results will
be the BEST with IFF24 files simply cuz they contain so much more
color information than a HAM picture or a 16 color picture.  All the
best Amiga graphics software now outputs IFF24 files and with 
educated use of ASDG's art Dept Professional you can also convert many
"alien" graphics file formats into IFF24 for import to DCTV.

DCTV's display cannot, honestly, compare to the FireCracker 24. If you
see them side by side I think you'll agree. FireCracker 24 is a high-res
24=bit Analog RGB Display board capable of crystal clear, razor sharp
16million plus color display on a standard Amiga monitor. However
comparing a $499 (retail) NTSC color device which can digitize with
a $1600 (retail) Analog RGB 24 bit display card is wrong since these
two devices, although they both provide an "extended" color display
on an Amiga are not identical in form nor function. Each does what
it does with great results - look at both and let your eye and your
wallet decide which is for you. 

Until ColorBurst from M.A.S.T. actually SHIPS and mortals can actually
BUY them, any accolades about that device are advertising hype.