Re : [Gimp-user] Re: Monitor for Gimp
Le 29.03.2004 16:27, Sven Neumann a écrit : Hi, do you consider global gamma adjustment useful at all? It means that everything on your screen, inlcuding the GUI and also the content displayed in your web-browser, image viewer, PDF viewer ... is gamma-corrected. IMO this is questionable since most software assumes an uncorrected display. Shouldn't gamma correction take place at the application level instead so that it is only applied to images that specify a gamma correction? The best solution would be to have the whole desktop managed. But, as most of the applications are not aware of the gamma you setup in Xfree, I my opinion, the best is to do the correction at the application level (as does scribus for instance). Please excuse my ignorance, I am trying to understand what's really needed for professional image manipulation and so far I understood that global gamma correction is not desirable. In the case of professional use, most of the image processing stations will have a dual-head system. One display, calibrated (profiled) to display the picture you are working on (mostly a CRT or a dedicated plasma type, only few -- expensive -- TFT are able of a right contrast/ gamma/colour handling) and a second one for the palettes, tools and so (and other applications like web browser). This one is mostly a relatively cheap TFT. -- - Jean-Luc Sven ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user pgp0.pgp Description: PGP signature
Re : Re : [Gimp-user] Re: Monitor for Gimp
Le 30.03.2004 16:26, Sven Neumann a écrit : Hi, Jean-Luc Coulon (f5ibh) [EMAIL PROTECTED] writes: The best solution would be to have the whole desktop managed. But, as most of the applications are not aware of the gamma you setup in Xfree, I my opinion, the best is to do the correction at the application level (as does scribus for instance). Huh? If you set your gamma correction on the X server than everything on your screen is gamma corrected, completely transparent to the application. What do you mean by an application being aware of the gamma you setup in Xfree ? If you setup a gamma of say 2.2 in Xfree, you will get most of the appllications wrongly displayed as they are not designed to support this setting. -- - Jean-Luc Sven pgp0.pgp Description: PGP signature
[Gimp-user] Re: Monitor for Gimp
[This is personal experience from amateur, so direct instead of list reply] [EMAIL PROTECTED] (2004-03-28 at 1438.12 -0500): Is there a monitor at a reasonable cost, a few hundreds of dollars, that allows for adjustment of gamma? Bearing in Doubt so, but you can get the adjustment via relatively supported videocard (I tried Matrox and ATI with Xfree86 drivers) and tools to tweak the LUT, look up table (xgamma, ie). Speaking about monitors, you can get CRTs with good quality for that price. They should let you select colour temperatures and come with their own profile. Check the pro range of known brands, probably the 19 and 21 inches sizes only. Three years ago 17 inches was pro too, now that size is crowded by TFTs (*1). Then download all the manuals you can find to inspect what they do. Matching will not be perfect, but you will be safer than with a go figure how it behaves monitor. For the past six or seven years I used Hitachi, CM641ET and CM643ET, both 17 inches (both same specs, they just changed the name, I think), nice quality. But they are leaving that market and going for TFTs now. So some months ago I got a Philips 109P40 for a bit more than 300 euros. It comes with 9300K, 6500K, 5500K and sRGB presets, allows mid-high resolutions at high refreshes (using 1280*960 at 100Hz at this moment), and the target market is CAD and DTP. It even has an extra input, just in case you need to plug two computers or you have a workstation that uses BNC instead of the typical 15 pin D-Sub. I wanted it a bit for colour quality, and a lot for the flicker free with reasonable resolution, my usage is non pro, but is impossible to get a monitor in which flicker free is not tied to nice tube and lots of controls. I also checked Hitachi, but they are going out of the CRT field as I said, NEC (fine), Mitsubishi (fine), Sony (expensive), Eizo (also expensive), Iiyama (fine), LaCie (they rebrand others, and add some things). Most of them are basicaly *tron tubes (Trinitron, Diamontron, Whatevertron or just this monitor uses aperture grille tube). The two lines that cross the screen are weird the first days, or when you try to concentrate in that area of screen. The *tron mask was also a bit strange for me, cos I was used to the Hitachi tubes, which provided really sharp images with their own technology. If you can go to the shops and see the monitors working, that would be the best. I did that for the Hitachis, and I was really happy with them. With the Philips it was a different story, now shops go for flashy TFTs so I was unable to check a real model in shops around here, and had to buy by phone a bit blindly. Good luck shopping. :] *1: Personally I only like them for pure text processing due the lack of flicker and reduced weight, but hate them for weird 1280*1024 resolution some have, lack of high resolutions (funny to find 1600*1200 or 1400*1050 in laptops but rarely in desktop TFTs, LaCie has one but expensive) and the varying colour response. I still have to find someone that can prove the gamut is above CRTs, last I read was that a medical targeted monitor with a price over a thousand was approaching 90% of NTSC range, if my memory does not fail. The mag company I know go with CRTs, and I agree with the friend I have there: not yet, maybe in the future, if colour is more important than space, buy CRTs. GSR ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] Re: Monitor for Gimp
[EMAIL PROTECTED] (2004-03-29 at 1424.48 +0200): [This is personal experience from amateur, so direct instead of list reply] Obviously not. Never start a reply while sleepy and never hit send before checking the field one more time. *hit wall with head* GSR ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Re: Monitor for Gimp
V Po 29. 03. 2004 v 16:27 +0200 pe Sven Neumann: Please excuse my ignorance, I am trying to understand what's really needed for professional image manipulation and so far I understood that global gamma correction is not desirable. As a metatheme author I think it is very desirable to have a global gamma correction. Same reasons apply to the widget theme as it does for displaying images. Great example is the Industrial gtk theme that uses a very light gray that on some system simply looks white. Apple has a nice system-wide calibration in OSX called ColorSync I believe. cheers -- Jakub Steiner [EMAIL PROTECTED] ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
