lunes, diciembre 08, 2008

gimp vs photoshop 4 (cinepaint)

CinePaint Frequently Asked Questions
by Robin Rowe

1. What's CinePaint?
CinePaint is a deep paint image retouching tool that supports higher color fidelity than ordinary painting tools.
2. What Platforms run CinePaint?
Linux, FreeBSD, Macintosh (native with GTK+OSX, not X11). The Windows version was withdrawn because it was unstable, but will come back eventually.
3. Where can I download CinePaint?
4. How do I get CinePaint from CVS?
CVS Linux and CVS Windows.
5. How do I build CinePaint from source?
Building from Source Tarball.
6. Why don't I see any file type but XCF in the image types list when I try to open a file? What happened to JPEG, etc.?
CinePaint isn't finding its plug-ins. (XCF isn't a plug-in.) Change your user preferences setting to point toward CinePaint's plug-ins directory.
7. Did you fork GIMP?
Back in 1998, the film industry employed some GIMP developers to enhance GIMP for 16-bit deep painting. GIMP never released that code. It was called the HOLLYWOOD branch in GIMP CVS and within the film industry it was known as Film Gimp. In 2000, the GIMP project announced a new direction, GEGL. Film Gimp was forgotten. In 2002, I discovered Film Gimp in use at the studio Rhythm & Hues while writing a story for Linux Journal. Readers wrote me for the tarball and started sending me patches. I made the patched code available on SourceForge. Film Gimp was renamed CinePaint and has evolved significantly since.
8. How do I get the film industry to sponsor my software project?
Not a CinePaint question, but something I get asked. In general, there's no chance of selling vaporware to a studio. Vendors beg studios to try their latest software and hardware for free in order to gain future business. Getting a meeting isn't easy. The time of film people is quite valuable, like a doctor or lawyer. It's so competitive that even getting to be an intern working for free at a studio is a challenge. Furthermore, it typically takes about seven years to accomplish much in the film industry. That's the typical cycle to develop and release one major movie. And remember, "Don't call us...we'll call you...."

About CinePaint

CinePaint is a deep paint image retouching tool that supports higher color fidelity than ordinary painting tools.

CinePaint is used to retouch feature films and in pro photography. CinePaint opens high fidelity image file formats such as DPX, 16-bit TIFF, and OpenEXR, and conventional formats like JPEG and PNG. It has a flipbook for movie playback of image sequences in RAM. It supports 8-bit, 16-bit and 32-bit color channels, HDR and CMS.

CinePaint is used for motion picture frame-by-frame retouching, dirt removal, wire rig removal, render repair, background plates, and painting 3D model textures. It's been used on many feature films, including The Last Samurai where it was used to add flying arrows.

For still photography, CinePaint can import bracketed HDR exposures. It has gallery-quality 16-bit per channel color printing with GutenPrint. CinePaint's high dynamic range is crucial with B&W still photography, where images only have a single channel.

Studio Users

Studios such as Sony Pictures Imageworks and many smaller studios use CinePaint. Disney, DreamWorks, and Pixar funded Crossover (Wine) to make Adobe Photoshop for Windows run nicely on Linux and that's what they use. Some studios use proprietary or internally developed tools. CinePaint is open source software. Nobody is obligated to tell us they use it. Studios use many Linux motion picture applications, not just CinePaint. This list of studios using CinePaint is just some we know about.

What's Special about CinePaint?

CinePaint is fundamentally different from other painting tools because it handles high fidelity image formats such as Kodak Cineon, SMPTE DPX, and ILM-NVIDIA OpenEXR. To do that properly requires a 32-bit per channel color engine core so that data isn't crushed into 8-bit color channels. The CinePaint core is 8-bit, 16-bit, and 32-bit as needed. It's different from GraphicsMagick which also supports different color depths but only as a compile-time switch. (GraphicsMagick has better support for film industry file formats than ImageMagick.)

As with audio editing, more bits is better. That is, provided you understand how to use them. If you can't hear the difference between transistor radio and a studio sound mixer, you may not be able see the difference between CinePaint and ordinary 8-bit paint tools either. If you're a filmmaker or professional photographer then CinePaint may be your best and only choice. Although conventional monitors are limited to 8-bit, output to motion picture film, digital cinema, gallery quality prints, or lithography is capable of significantly better.

So Why Not GIMP?

We get this question a lot. Because CinePaint handles 8-bit images in common image formats such as JPEG, TIFF, and PNG, that makes CinePaint an alternative to ordinary image editing tools. However, CinePaint has fundamentally different design goals from projects like GIMP. We have the interest, expertise, experience, professionalism, and pro users needed when developing successful software for the high-end.

Ever since CinePaint launched as a public project on SourceForge on July 4th, 2002, there's been quite a bit of hostility towards us from GIMP hackers. There seems to be a misconception that we're competitors. In our primary market, the film industry, our position is #2 and Adobe Photoshop is #1. GIMP is practically useless for filmmaking since it can't handle CIN, DPX or EXR files.

GIMP has pursued an architectural overhaul called GEGL that's a very different design from Glasgow. They've been at it since 2000. Glasgow began in 2004.

Is CinePaint a Video Editor?

CinePaint is a deep paint tool that's used for retouching movies, not a movie editor like Avid or Final Cut Pro. Avid Composer, Apple Final Cut Pro, Apple Motion, Adobe After Effects and Apple Shake are all great tools when matched to the task at hand. Our plan for CinePaint includes more features in that direction, but we're far from that now. Nobody should be asking whether CinePaint, or for that matter any other open source project, is about to equal popular movie editing tools. At best the answer is, "not soon". Other Linux studio software.

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