DVL-Digest 1899 - Postings: Index bbc luminance problem NTSC-> PAL conversion Red, Yellow, Blue Spam:RE: NTSC-> PAL conversion bbc luminance problem - "Perry Mitchell" From: David Mowbray Here's something for Perry to comment on: BBC Panorama just did a doco about the Iraqi prisoner abuse situation. I watched it here in Nigeria on BBC World via the DSTV satellite from South Africa. I suspect much of the doc was shot in DV25 format. They used a lot of silhouette and shadow to hide identities and overall the image seemed a bit dark... except when they keyed a person's name/title. Then the whole screen lightened as all the luminance was bumped up during the render. It struck me as very odd for the BBC to make this kind of error. Perry? NTSC-> PAL conversion - "Perry Mitchell" From: George Loch Thanks for the info. There are a lot of maybes but, we would like something more certain. Is there such a thing as a NTSC->PAL convertor? Red, Yellow, Blue - "Perry Mitchell" From: Josh Lewis Painting when constrained to watercolor, some frescos and light washes is a subtractive medium but painting on canvas with oil or acrylic is neither a subtractive nor an additive medium. With painting on canvas most paints are opaque and it's good to think not of primary colors nor to try and buy such "primary" colors but instead to think of primary pigments: cobalt blue, chrome green, cadmium yellow orange and red. Think of it has having a color wheel with many many different primaries all with their own properties. Even thinking of non-primaries as primaries of their own substance like burnt umber, bone black (bone, lamp, and carbon black are just different grades of the same pigment) and titanium white. About the only paints that aren't opaque and would therefore be kind of subtractive are the dye based paints like phthalocyanine green and blue, hanna yellow, and alizarin crimson. These are often directly mixed with an opaque white or an opaque grey by painters so that they will behave more like an opaque pigment and work more predictably in a canvas of other opaque pigments. Spam:RE: NTSC-> PAL conversion - "Perry Mitchell" From: Randy Quimpo NTSC to PAL conversion? less than to >,000? Surely you're not talking about DV to film aren't you? (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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