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Participating Frequently
October 31, 2007
質問

Photoshop CS3 color management "Save for Web" problem

This problem is getting the best of me.......

After spending 3 full days researching this problem, I am no closer to finding an answer than when I started. I still cannot produce a usable image through the "Save for Web" feature of Photoshop CS3. I have read web page after web page of "Tips, Tricks and Recommendations" from dozens of experts, some from this forum, and still I have no solution... I am exhausted and frustrated to say the least. Here's the simple facts that I know at this point.

I have a web design project that was started in PS CS1. All artwork was created in photoshop and exported to JPG format by using "Save for Web". Every image displays correctly in these browsers (Safari, Camino, FireFox and even Internet Explorer on a PC).

I have recently upgraded to PS CS3 and now cannot get any newly JPG'd image to display correctly. My original settings in CS1 were of no concern to me at the time, because it always just worked, and so I do not know what they were. I have opened a few of my previous images in CS3 and found that sRGB-2.1 displays them more or less accurately. I am using sRGB 2.1 working space. Upon openning these previous image files, I get the "Missing Profile" message and of course I select "Leave as is. Do Not color manage". CS3 assumes sRGB-2.1 working space, opens the file, and all is well.

The problem is when I go to "Save for Web", the saturation goes up, and the colors change. The opposite of what most people are reporting. Here's another important point... new artwork created in CS3 does exactly the same thing, so it's not because of the older CS1 files.

I have tried every combination of "uncompensated color", "Convert to sRGB", "ICC Profile", etc. while saving. I have Converted to sRGB before saving, and my monitor is calibrated correctly.
I have tried setting the "Save for Web" page on 2-up and the "original" on the left is already color shifted before I even hit the "Save" button. Of course, the "Optimized" image on the right looks perfect because I am cheating by selecting the "Use Document Color Profile" item. Why do they even have this feature if doesn't work, or misleads you?

Does anyone have any ideas what could be happening here? Why is this all so screwed up?
CS1 worked fine out of the box.

Final note: I do have an image file I could send along that demonstrates how it is possible to display an image exactly the same in all 4 of the browsers I mentioned with no color differences. It is untagged RGB and somehow it just works.

I am very frustrated with all of this and any suggestions will be appreciated

Thanks,
Pete
    このトピックへの返信は締め切られました。

    返信数 680

    November 24, 2007

    "This is why I think you're an arrogant ass."

    Comments like these are why threads are shut down... so cool it with the name calling, please :-|

    November 24, 2007
    >Unless you are using the same Dell monitor that Raven is, whatever you see on YOUR screen is of no relevance to the question at hand

    Well that is what I've been saying all along.
    Participating Frequently
    November 24, 2007
    "SFW means definitively that there is something wrong with the monitor profile?"
    >>No I'm saying that the color shift is so minor from what I see in the screen shot that its not worth worrying about. <<

    Unless you are using the same Dell monitor that Raven is, whatever you see on YOUR screen is of no relevance to the question at hand. What we're talking about here is color theory and everyone's individual results may vary. Just because Raven sees a bigger difference on her screen does nothing to invalidate either her profile or her calibration. It only goes to illustrate that different monitors have different gamuts. When I assign Monitor RGB to an sRGB image on my Artisan or Barco, there is virtually no change on screen. She sees a bigger difference because her screen is not as close to sRGB. That she has finally come to grasp this important bit of information and done so in only three hundred or so posts over a matter of only a few days is not something to be ridiculed and criticized. It's something to be proud of. It takes many people years to come to the same realizations and understandings and for a whole lot of others - well - they never quite get it.

    Raven, don't let anyone here scare you away. You are not a troll, as one person here seems to think. You've stuck in there and now seem to have a greater understanding that will carry you forward. This color stuff is not easy to understand at first. Don't get discouraged really don't let anyone here get to you.
    Ramón G Castañeda
    Inspiring
    November 24, 2007
    Raven,

    Well if you're comparing me or anybody else with someone with an IQ below room temperature (in degrees Celsius), then, yes, you are justified in mentioning "a cozy den of infinite superiority".

    Otherwise, you are indeed the troll I perceive you to be.

    It never fails: the more argumentative the poster who insults the folks who are trying to help him, the greater the certainty that PEBKAC.
    Participating Frequently
    November 23, 2007
    >> a misunderstanding about what SFW is doing

    QUITE SIMPLY:

    Photoshop SFW (CS3 default) is Converting to sRGB, stripping the profile and applying Monitor RGB through its preview.

    This is the same as: CS3 Photoshop> Convert to Profile (sRGB)> View> Proof SetUp> Monitor RGB preview.

    This is the same as: viewing untagged sRGB in FireFox/Opera/Explorer/Safari preview.
    >> people seemed to be suggesting that a colour shift in SFW means quite simply that we have a bad profile.

    I said a color shift there shows the DIFFERENCE between sRGB and Monitor RGB, and a slight shift is expected.

    I further said, an "extreme" saturation shift there -- when 2.2 gamma and d65/6500 was built into the custom monitor profile -- would indicate a problem with the profile/hardware/software (or user error).

    I further said, the manufacturer of the puck should be able to provide a simple answer to this FAQ -- why the shift -- but it appears no one took the time to make the call.

    +++++

    Instead, some people are complaining here and disrespecting the very people who've patiently tried to help them.
    November 23, 2007

    > SFW means definitively that there is something wrong with the monitor profile?

    No I'm saying that the color shift is so minor from what I see in the screen shot that its not worth worrying about.

    But if your Dell monitors in combination with the huey profile are somehow exaggerating this so you have an garishly ugly mess on your monitors then yes you have a bad profile and or a crappy monitor.

    You may think I'm being elitist but I wouldn't let a Huey or a Spyder within ten feet of my computers. Also cheap monitors are just that cheap. I realize that some people sware by their Dells and many claim they are identical to Apple monitors.

    I do happen to use a cheap pallet monitor. no matter what I do or how much I fiddle with it I can't get it to match my Apple Cinema HD even using the EyeOne 2. That's OK its my pallet monitor.

    November 23, 2007
    Buko, what was the solution? Are you saying that you think that a colour shift in SFW means definitively that there is something wrong with the monitor profile? End of story?

    I am suggesting, once more, that a) SFW is showing me the difference between sRGB (or the image's embedded profile, whatever it may be) and my monitor profile, and that b) a monitor does not need to be using the sRGB profile to be accurate. Therefore if my monitor IS properly calibrated AND it's not using the sRGB profile, then I WILL see a shift in SFW and that is OK.

    On the other hand, if it's true that a colour shift in SFW means absolutely there is something wrong with the monitor profile, then the answer is "the calibration technique used is faulty, perhaps a replacement calibration puck or a higher quality system is required", and indeed that solution has been suggested way back in the earlier posts. (I currently don't believe that's the case.)

    I hope you understand what I'm trying to say Buko, because I do appreciate your opinion and feedback...when you are offering some, rather than simply dismissing my comments and concerns.
    November 23, 2007
    >then one of the reasons that this topic has reached 300+ postings is because a number of people seemed to be suggesting that a colour shift in SFW means quite simply that we have a bad profile.

    Well something is bad.

    From Post 21

    >Viewing your pics on a laptop I'm not sure what you are complaining about. I do not see any oversaturated color. also keep in mind that most of the people looking at a website don't have a calibrated monitor so your image will look different on every randomly chosen computer If you were to line them up side by side.

    The difference that I saw in the screen shot posted was from photoshop and a non color managed app. To me it was not a big deal and is not something I would get bent outa shape over. But you guys kept saying it was oversaturated which to me would mean garish unacceptable colors. this would indicate a bad monitor profile.

    So in my estimation this whole thing was solved 290 posts ago.
    November 23, 2007
    Thanks for the feedback Peter. If it's true that we shouldn't necessarily be alarmed about colour shifting in SFW that it doesn't actually mean anything is wrong after all, and it's just a misunderstanding about what SFW is doing then one of the reasons that this topic has reached 300+ postings is because a number of people seemed to be suggesting that a colour shift in SFW means quite simply that we have a bad profile.
    Participating Frequently
    November 23, 2007
    Raven,

    It seem that you are getting a pretty good grasp of the situation. I would modify your second bullet point to say that the Dell doesn't "require" a shift away from sRGB, only that it actually IS different and it is what it is.

    That there are going to be more monitors available with wider gamuts than sRGB, it may require a change in the assumption we have all been making for several years now. sRGB became the defacto internet standard because it most closely represented the majority of displays being used to view web pages with. Because of the sheer volume of existing images already in sRGB on the web and elsewhere, I'm not sure it's practical to impose a different standard, however, we can all insist on color managed and profile aware browsers and internet apps and we can start embedding the sRGB profile in images destined for the web.