Archived posting to the Leica Users Group, 2007/06/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jim the basics are: You start by selecting the desired colour temperature. 6500K is widely accepted for photo-editing. The device measures the luminance (brightness) of each channel (RGB) and how it reproduces known shades of each colour. Contrast is typically set high. The profile generated is a set of corrections that adjust what your VIDEO card outputs to the monitor. So the software sends say, red 127, green 127, blue 127 ((neutral grey) and the device measures what the monitor reproduces. You then adjust the channels via the monitor controls until the balance is as close to correct as you can get. Luminance is adjusted separately. Depending on how the balance is affected (i.e. may not be linear) as you fiddle with the RGB gain you may then have to revisit the balance. Usually the only true hardware control on an LCD is the brightness. The exceptions to that are the top models in the Eizo range which have true adjustment of the look up table in the monitor itself and also higher bit tonal ranges to choose from (i.e. smoother gradations). However these cost a young fortune. They are the Leica APO ASPH lenses of the monitor world. When you computer is started up the profile is loaded and you can see, distinctly, the adjustment as that happens. LCDS also are usually much brighter than CRTs and consequently their recommended luminance range is higher. However I do find that mine still works well for soft proofing. The other point raised in this thread which is very valid is that you need to consider what the intended use of the image is. What is best maybe for WOW factor on a screen may not be reproducible on a print (contingent on your process there, of course). I should repeat too, after all of that waffle, that your pic is gorgeous and a worthy member of the Friday Flower galleries! Cheers Hoppy -----Original Message----- Subject: Re: [Leica] IMG:Friday Flower-Begonia Hoppy, For these old eyes, the monitor settings as I have them work out pretty good. I think I will leave them as-is. I appreciate your help. I agree that I must be careful not to oversaturate when making PS adjustments. Otherwise, the detail in the saturated areas disappears. Out of curiosity, how do the Spyder devices work? Do they provide a calibration signal that can be fed to the monitor? Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "G Hopkinson" <hoppyman@bigpond.net.au> To: "'Leica Users Group'" <lug@leica-users.org> Sent: Friday, June 01, 2007 5:40 PM Subject: RE: [Leica] IMG:Friday Flower-Begonia > Jim, I just opened your pic in PS and had a look at the levels etc. In > fact the blacks are clipped except for in the red and the > highlights are fine. As you have shown it is exactly how it should be for > that picture, in my opinion. The very dark to black > background is what showcases the flower's colour for me. > I was referring to the intensity (saturation) of the flower's colour > rather than the brightness. As we all know it is impossible to > control the range of adjustments and viewing conditions that other folks > have on their monitors. All you can do is manipulate the > picture's tonal range so that it works for you and use/convert to the > right colour space, which your picture is. > > For comparison, my Dell widescreen is set to zero percent brightness as > part of the calibration and it is still about twenty percent > too high for the luminance to be ideal for an LCD. If you are interested > in pursuing that calibration, the XRITE Eye Ones are ideal, > in my opinion. The cheaper Spyders are also good. I have both now and the > Eye one does the best job. > > Without calibration, I would be turning your monitor brightness DOWN, not > up. > > Cheers > Hoppy > > -----Original Message----- > Subject: Re: [Leica] IMG:Friday Flower-Begonia > > Hoppy, > > How about some help? I have had comments about the intensity of my images > a > couple of times. I can only judge the PS results as I see them on my own > monitor, which is a Dell LCD with the brightness set at 30%. I seem to > recall that you have a calibrated monitor. If you see my images as > extremely bright, perhaps I need to raise the brightness of my monitor so > that I will not damage the eyesight of my viewers. Got any suggestions? > > Jim Nichols > Tullahoma, TN USA > ----- Original Message ----- > From: "G Hopkinson" <hoppyman@bigpond.net.au> > To: "'Leica Users Group'" <lug@leica-users.org> > Sent: Friday, June 01, 2007 2:22 AM > Subject: RE: [Leica] IMG:Friday Flower-Begonia > > >> Jim, do the squirrels wear sunglasses!! That picture nearly seared my >> retinas when I opened it. Gorgeous colour, the dark background >> is very effective, as well. >> >> Cheers >> Hoppy >> >> Subject: [Leica] IMG:Friday Flower-Begonia >> >> My wife's patio flowers have to endure the activities of the backyard >> grey >> squirrels, who like to bury acorns in the containers. >> Before the flowers are gone, I felt that I should capture one her >> begonias. >> >> Comments/critiques welcomed. >> >> http://gallery.leica-users.org/v/OldNick/Begonia.jpg.html >> >> >> Jim Nichols >> Tullahoma, TN USA >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information