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#1
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X-Rite Passport
On 2015-10-17 04:22:28 +0000, Tony Cooper said:
I just purchased an X-Rite Passport. So far, I have only shot one pre-set, but the difference is slight. I'll see how it works out with some better pre-sets. What do you mean by "better pre-set"? Are you trying to create general light condition WB & color presets, or are you trying to set an in-camera WB? From what you have said I suspect that you have the multi-color target and Grey WB target. Both of these are useful, but are only half of the equation, which starts with display/monitor calibration. For that you are going need to add another tool to your kit, a display calibration system: http://www.bhphotovideo.com/c/search?N=11130968&InitialSearch=yes&sts=pi http://www.bhphotovideo.com/c/product/894645-REG/X_Rite_cmunsml_ColorMonki_Smile_Color_Calibration. html http://www.bhphotovideo.com/c/product/798928-REG/X_Rite_CMUNDIS_ColorMunki_Display.html/prm/alsVwDtl After calibrating with one of these tools it can adjust for ambient light changes in your work environment I'm not sure if it's worth the $106 (including tax) -- Regards, Savageduck |
#2
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X-Rite Passport
On 2015-10-17 16:13:43 +0000, Tony Cooper said:
On Sat, 17 Oct 2015 11:49:56 -0400, Tony Cooper wrote: On Fri, 16 Oct 2015 22:44:53 -0700, Savageduck wrote: On 2015-10-17 04:22:28 +0000, Tony Cooper said: I just purchased an X-Rite Passport. So far, I have only shot one pre-set, but the difference is slight. I'll see how it works out with some better pre-sets. What do you mean by "better pre-set"? The software that comes with the X-Rite allows you set various pre-sets that are available as Profiles in the Camera Calibration dropdown in Lightroom. I suppose I could have used "Profiles" instead of "pre-sets", but the X-Rite videos use "pre-sets". They become Profiles in Lightroom. It depends on whether you use X-Rite's term or LR's term. By "better", I mean "under different conditions". I can have a Profile for shots in full sun, for shots in shade, etc. Ideally, a shot should be taken with the ColorChecker in it for each series under the same conditions. The differences are slight, though, as far as I can tell. OK! That is fair enough, and you should only expect subtle changes. However, display calibration should still be in your tool kit. As I'm you know, there are various Profiles in Lightroom that are based on the camera you use. I photographed this poster and made two virtual copies of the image. Each of the three is the same in all adjustments except for the Profile. https://www.dropbox.com/sh/5rhghjmds...XBdTSACKa?dl=0 #1 is using the Profile set by X-Rite. #2 and #3 are standard Profiles for my camera that are already included in LR. I didn't try all of them. I am making the assumption that you had the Color check card in the same light environment and made a reference shot. In daylight I am not to concerned, but where there are mixed light sources I will try to get a reference shot with a WhiBal card for RAW WB adjustment. http://michaeltapesdesign.com/whibal.html Of the samples above, my eye finds #2 the most pleasing, followed by #1, #3 just doesn't look right. I haven't yet shot a human being using the ColorChecker, so I'm interested in what it will do with skin tones. With a poster as used in this series, you really don't know what the true colors should be. -- Regards, Savageduck |
#3
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X-Rite Passport
On 2015-10-17 19:59:01 +0000, Tony Cooper said:
On Sat, 17 Oct 2015 09:50:19 -0700, Savageduck wrote: On 2015-10-17 16:13:43 +0000, Tony Cooper said: On Sat, 17 Oct 2015 11:49:56 -0400, Tony Cooper wrote: On Fri, 16 Oct 2015 22:44:53 -0700, Savageduck wrote: On 2015-10-17 04:22:28 +0000, Tony Cooper said: I just purchased an X-Rite Passport. So far, I have only shot one pre-set, but the difference is slight. I'll see how it works out with some better pre-sets. What do you mean by "better pre-set"? The software that comes with the X-Rite allows you set various pre-sets that are available as Profiles in the Camera Calibration dropdown in Lightroom. I suppose I could have used "Profiles" instead of "pre-sets", but the X-Rite videos use "pre-sets". They become Profiles in Lightroom. It depends on whether you use X-Rite's term or LR's term. By "better", I mean "under different conditions". I can have a Profile for shots in full sun, for shots in shade, etc. Ideally, a shot should be taken with the ColorChecker in it for each series under the same conditions. The differences are slight, though, as far as I can tell. OK! That is fair enough, and you should only expect subtle changes. However, display calibration should still be in your tool kit. As I'm you know, there are various Profiles in Lightroom that are based on the camera you use. I photographed this poster and made two virtual copies of the image. Each of the three is the same in all adjustments except for the Profile. https://www.dropbox.com/sh/5rhghjmds...XBdTSACKa?dl=0 #1 is using the Profile set by X-Rite. #2 and #3 are standard Profiles for my camera that are already included in LR. I didn't try all of them. I am making the assumption that you had the Color check card in the same light environment and made a reference shot. Yes, that's the way it's done. It wasn't done the right way, though. The "right" way would have been to hold the Passport* flat against the wall either over the poster or next to it. I didn't have any way to secure it to the wall, so I put it on the ground in front of the wall. This is not the "right" way since the light should be the same in both the reference shot and the actual shot. I was shooting from east of the wall in the afternoon, so the wall was not in direct sun but the ground was. If someone had been around to hold it for me, it would have been a better reference. Do you mean you don't have an assistant in your team! *The product is the X-Rite Passport ColorChecker in case the different names I've used are confusing. Not confusing at all. I knew what you were talking about from the start, I was just not sure of how you were using it. In daylight I am not to concerned, but where there are mixed light sources I will try to get a reference shot with a WhiBal card for RAW WB adjustment. http://michaeltapesdesign.com/whibal.html There are WB squares on the Passport, so the one unit does both. Of the samples above, my eye finds #2 the most pleasing, followed by #1, #3 just doesn't look right. Hard to tell because the artist picked the colors and we don't know if he picked what was most pleasing to your eye or mine. A photograph of something with known colors (like an American flag) would be a good test because we have an expectation of what those colors are. What he picked was, in this case irrelelevant. My eye convinced me that #2 was the most pleasing for me. Somebody else is probably going to think otherwise if they had to make a choice The good thing in most presentations is these is only one version submitted by the artist, and no choice for critics to make. Even skin tones are difficult if you don't know the person. I have two grandsons, and one has very white skin and the other is more olive. In this photo, they look much the same but in other photos the difference is very noticeable: https://www.dropbox.com/s/y7c7gozgjp...03-44.jpg?dl=0 They appear to have very similar skin tones in that shot. I don't think that a skin tone reference patch on the ColorChecker is going to resolve that issue. I believe that this is where a WB correction from a good reference shot might help. The only problem with that is, that type of nit picking tends to destroy the sponteneity of the moment. Possibly get a reference shot after the fact. That is a reason I like the WhiBal card, I have one of the credit card size cards I can keep in my wallet, and a studio card. Anyway, I usually have one with me and it is simple enough to get a reference shot, correct in LR or ACR, and then apply that WB to all the shots taken in that light. https://dl.dropboxusercontent.com/u/1295663/FileChute/screenshot_353.jpg I haven't yet shot a human being using the ColorChecker, so I'm interested in what it will do with skin tones. With a poster as used in this series, you really don't know what the true colors should be. -- Regards, Savageduck |
#4
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X-Rite Passport
On 10/17/2015 01:44 AM, Savageduck wrote:
calibration system calibration brings a system to steady state characterization creates a profile for the steady state ideally you would use characterization systems along with calibration systems then again, there is good enough color -- Dale http://www.dalekelly.org |
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