Re: filmscanners: Setting screen gamma problem
Me too I struggled a lot with calibrating my Viewsonic PF815 22' monitor. I used Adobe Gamma on the Gamma-space 2.2 monitor calibration chart made by Timo Autiokari on www.aim-dtp.net. and http://www.aim-dtp.net/aim/evaluation/gamma_space/index.htm. He made also many other gamma charts. I downloaded the 2.2 chart and placed it as the desktop wall. Withy Adobe Gamma I managed to get a quiet good calibrated monitor on all the grey values from deep black to high white. When looking at the Yellow Rose from Lawrence W.Smith in PS6.01 I can see clearly the subtle details in the leave and the beautifull colors in the rose. It indicates me that my calibrtion is correct. I suggest you try this too and see what it gives... Jean-Pierre Verbeke - Original Message - From: laurie [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, June 28, 2001 5:57 PM Subject: RE: filmscanners: Setting screen gamma problem I did nto read the post thoroughly; but I would suggest that some of the difference may very well be that your monitor is set at a different color tempurature than those that you looked at which would effect the rendering of the gamma setting. Moreover, you may not have hour monitor's brightness and contrast settings set at the same levels as was the case on the other monitors. Gamma settings is only one component in monitor calibration; monitor calibration is not the same thing as color management but merely the first step in color management. For WYSIWYG to work across multiple systems, all the systems have to be calibrated to the same standard of color temperature, gamma, white point and black point, brightness and contrast. Not to be funny; but how sure are you fo the acccurracy of your step wedge? Most commercial step wedges are created using precision measurement instruments and printed to precisely measurable standards. Is it possible that you personnally created step wedge may be out of gamut at the dark end with respect to your monitor? Is it possible that your web sit files might be tagged with profiles that have small or inapproriate working color spaces so that those receiving the image get images that their systems correct to the embedded profile? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Julian Robinson Sent: Wednesday, June 27, 2001 7:50 AM To: [EMAIL PROTECTED] Subject: filmscanners: Setting screen gamma problem I know this topic is revisited ad nauseum, but I have just discovered that what I thought was the Right Thing To Do does not appear to be right at all. On my system, Adobe Gamma setup seems to be worse than no setup at all. I have cross posted this to Epson7x7, filmscanners, scan and digital silver lists. This post has become very long, read it if you are interested, but the essence of my question is ... ** Please look at my simple greyscale step wedge at www.austarmetro.com.au/~julian/stepwedge.htm and tell me if setting this up for equal visual steps is a valid way of setting screen gamma, and does *your* monitor show this wedge accurately? ** My problem was to make my recently web-published photos look reasonable on other people's monitors. I use PS5.5 and a Sony 400PS monitor. I thought I had this all sussed, because I had religiously used Adobe Gamma to give me what I assumed would be, maybe not perfect, but at least ball-park OK settings. I then looked at my pubescent website on someone else's computer to discover all my deep beautiful saturated colors were pale, insignificant and plain ugly. I checked a couple of other computers and while they vary, generally they give the same result. My conclusion therefore was that for some reason my screen gamma is set to make my screen look too dark. So I checked Adobe Gamma again but it gave me the same settings. I can't afford a proper calibrator at this time, but decided to go back to basics on the assumption that a step wedge greyscale from 0,0,0 to 255,255,255 should look balanced on my screen and the steps should all be visible and roughly the same brightness difference between adjacent steps across the scale. I constructed a simple step wedge of 17 steps (0,0,0; 16,16,16; 32,32,32 ...255,255,255) and it looked bad. The bottom 3 steps were all black, which seemed to confirm that my monitor was NOT adjusted correctly. So I tried then to adjust gamma so that my stepwedge looked ok. The problem is that to achieve this, the gamma has to be set so high as to be almost off the scale. This is the same whether I use the slider on Adobe Gamma Utility, or a different setting available in my Matrox card adjustment software. In both cases the gamma required to make the step wedge look OK is way up the top end of the adjustment. And of course all my wallpapers and in
Re: filmscanners: which scanner for slides ? ( SCSI vs USB )
Well it works without any problem for now one year on my W2k machine with sp2 installed... Jean-Pierre - Original Message - From: B.Rumary [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 04, 2001 6:29 PM Subject: Re: filmscanners: which scanner for slides ? ( SCSI vs USB ) In 01c0ecc2$a1908ef0$6401a8c0@jamesg, James Grove wrote: I dont think that will work, as many SCSI devices have to be seen by the SCSI BIOS on boot up. It certainly does *not* work on my Windows 98 machine - the SCSI devices all have to be on at boot-up. Brian Rumary, England http://freespace.virgin.net/brian.rumary/homepage.htm
Re: filmscanners: Silverfast5.2 and LS4000
I found it...thanks! Jean-Pierre - Original Message - From: Mikael Risedal [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, May 26, 2001 7:22 PM Subject: Re: filmscanners: Silverfast5.2 and LS4000 I download the demo LS4000 at http://lasersoft-imaging.com/english/ Up in the left corner you have it. Mikael Risedal From: Verbeke Jean-Pierre [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: filmscanners: Silverfast5.2 and LS4000 Date: Sat, 26 May 2001 12:55:43 +0200 Mikael, That's interresting Which demo version did you use? I mean SF for LS2000 or LS4500? I have the LS2000 with SF 5.2 with IT8 and it would be great If I could just use my SF with the new LS4000 or LS IV. Jean-Pierre - Original Message - From: Mikael Risedal [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, May 25, 2001 6:30 PM Subject: filmscanners: Silverfast5.2 and LS4000 Silverfast 5.2 try out demo for LS 4000 Check out http://lasersoft-imaging.com/english/ Demo of Silverfast 5.2 and Nikon LS 4000. Silverfast behaves quick and good together with my LS 4000. Now we are talking scanning speed compare to the slow NikonScan. Mikael Risedal Photographer Lund Sweden _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Re: filmscanners: Silverfast5.2 and LS4000
Mikael, That's interresting Which demo version did you use? I mean SF for LS2000 or LS4500? I have the LS2000 with SF 5.2 with IT8 and it would be great If I could just use my SF with the new LS4000 or LS IV. Jean-Pierre - Original Message - From: Mikael Risedal [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, May 25, 2001 6:30 PM Subject: filmscanners: Silverfast5.2 and LS4000 Silverfast 5.2 try out demo for LS 4000 Check out http://lasersoft-imaging.com/english/ Demo of Silverfast 5.2 and Nikon LS 4000. Silverfast behaves quick and good together with my LS 4000. Now we are talking scanning speed compare to the slow NikonScan. Mikael Risedal Photographer Lund Sweden _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Re: filmscanners: Posterisation LS2000
I'm sorry I cannot help with the symptom ... however I would serious suggest (1) you take a problematic ektachrome with you ... one you can give to them, and that clearly demonstrates your problem; (2) scan the slide with their LS-2000, and then scan it with yours (in place of their scanner ... same computer/software). These 2 steps should clearly demonstrate if your scanner has a problem (or not). The next step would be the hardest, because stuff is likely to get lost ... miscommunication happens, and they do know how to wave their arms ... (3) IF they take your scanner in for repair, ask that the slide and TIFFs go with it, which should clearly indicate what needs to be repaired, and ask that a final TIFF be scanned and compared before the unit is give back to you. ... report back to us ... good luck ... shAf :o) Thanks for your clear advice. I hope the people at Nikon will have an ear to it... Jean-Pierre [EMAIL PROTECTED] Belgium
filmscanners: Posterisation LS2000
Hi, I have a LS2000 since a couple of monhts now and I'm struggling with a nasty problem. I'm using Silverfast 4 and even upgraded to Silverfast 5.1 with IT8 Calibration. Win2000 platform with Photoshop 5.02. MonacoEZcolor monitor calibration with colorisensor. After the IT8 calibration with the C-ROES from Lasersoft I manage to get good scans from Ektachrome slides without major color corrections. With Sensia II slides I get a quiet reddish color cast but applying a curve made in Photoshop I manage to get a good color balance. Since the purchase of the LS2000 I noticed some fair amount of black noise and posterisation. Scanning either with Nikon Scan 2.5 firmware 3.1 or Silverfast at 16x and 2700dpi shows the same problem. Unchecking color management and resetting the curves and levels to neutral doesn't help neither.In Photoshop it's possible to get rid somewhat of this posterisation by pulling it into the back. But I'm not so happy with the results... In september I went to the PhotoKina in Koln, Germany, and had a long talk with some people at the Nikon stand. I saw some pictures they scanned and I didn't notice any phenomen like my LS 2000 has. They told me this wasn't normal at all and take contact with the Nikon service in Belgium where I live. They looked at it and told me they didn't find anything particular abnormal but revised it, at least that's what they told me... But still the same problem occurs. Somehow I can painly live with it when scanning bright pictures with little amount of deep shadows but yesterday I scanned a nice low key with very subtle black to grey shades and the result is disastrous: Banding and posterisation!!! No way to get rid of it whatever I did. So I contacted the Nikon service again and they told me they would "talk" about it next week and see what they can do... Is there anyone there who experience somehow the same problem and could give me some cloes on this matter? Is it a sotware problem or as I strongly suspect a basic hardware failure? Thanks for any input... Jean-Pierre Verbeke [EMAIL PROTECTED] Belgium
