Part 2 - Off-Topic - advice, experiences, and examples for images being processed in DxO Photolab

Fascinating. You said it all.

  • My captured images are intended for internet use.
  • As you wrote, I should make sure they are converted to sRGB
  • But why not take the pictures in sRGB to begin with, so there is no need to convert them?
  • That chart you posted is something I have never seen. Where would you want me to go to, to tell the system to "not use “As shot”? If that question never shows up for me, I have no way to select anything.

The only thing I get to see, is this screen on the back of my camera, and I used to, and expect to continue, selecting sRGB:

All of you seem to be talking about some mysterious settings I have never seen before, and have no idea what they do, or how to find them. If I simply select sRGB, life (for me) is so much simpler.

If this stuff is buried away someplace within PhotoLab, I’ve never seen it.

About Ken Rockwell - he wrote more about my new/old D3 than everyone else put together, and I learned things from him that I didn’t know before. Perhaps I could have found that in the user manual, or the books written about the camera, but Ken made it all so easy, and explained the “why” which the manual did not. So many choices - and as I went through them, I found I selected the wrong ones, likely because at the time I didn’t understand. I’ll post the link to the one I just found earlier this evening.

And to repeat - 99% of my photos are intended to be viewed digitally. (In the past, they were to be printed, but I didn’t know anything about RGB choices. Had I understood this stuff then, I would have shot in AdobeRGB, which is what the magazines probably preferred - although they never said anything.)

You can laugh at the guy, but the following is just one of the dozen or so pages Ken wrote about all the controls on the D3, the menu settings, and so on. If you (or anyone) knows someone better at this, please let me know. I wish Ken had done this for the D780. He is opinionated - but so what.

https://www.kenrockwell.com/nikon/d3/users-guide/controls-back.htm

Time for sleep. I also found I never updated the firmware. Need to do that soon.

His “opinions” leave a lot of people with incorrect information. There are certain things you cannot have opinions about from a logical perspective. In my opinion some of his opinions are akin to saying “In my opinion, a wheel should actually be square shaped and not circular.” And because he is not a bad writer and can produce good photos, we end up with people quoting his opinions as though they are fact.

Actually a good way to sum up Ken Rockwell: Good photos and successful website but appears to confuse facts and opinions.

Not only has PhotoLab now got the new Wide Gamut colour space, it also introduces the ability to soft proof to both screen and printer.

Let’s start with this lovely image of James Compton from Fest Jazz 2017. It was taken with the camera set to sRGB.

Here it is in the “Classic” (AdobeRGB) colour space…

Now, my monitor is an Apple, which runs in the P3 colour space. In order to make sure that colours are accurately reproduced on other people’s sRGB monitors, I need to soft proof it with the sRGB profile. Here is what I get…

The differences are slight but, if you look just above James’ hand, you will see a slight change in tone of the orange background.


Now, in the “Wide Gamut” colour space, without soft proofing, the image looks like this…

However, if I take that image and apply soft proofing for an sRGB screen, I get the following false colour indicators, telling me that those areas are “out of gamut”, which means that those colours cannot be guaranteed to be reproduced accurately when shown on an sRGB monitor.

And here is the same image, corrected with the HSL Colour Wheel by increasing the luminosity and reducing the saturation slightly for the red channel, sampled from the back of his shirt…


So, it may not matter what colour space you use in camera for a RAW file, but it certainly matters which colour space you use in PhotoLab and you may also need to soft proof if you really want to be sure that folks viewing on sRGB monitors will see what you are seeing.

The most noticeable problem with out of gamut colours tends to be that you can lose detail in those colours - for example the folds in the shirt in this image as shown in the wide gamut space.

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@underexposed – a great post! Let’s hope that Mr. MM understands a bit better.

Yes – this!

And if I remember correctly, Mike’s monitor only provides sRGB, which I think he used alternately with an iMac (due to the lighting situation at his place) …

Indeed.

And, if I may just reinforce, when shooting RAW the camera colour space may not matter but when exporting, if you want to convey the image as you are seeing it on a screen with a larger colour space (like an Apple) you really need to think about the colour space you use in PhotoLab and use soft proofing to check your exports will look just as good.

Absolutely. I often see images projected at our photo club that are obviously prepared on an uncalibrated monitor and when the author is asked about the rendering, the reply is often “well it looked alright on my screen”

Actually Apple monitors are P3, so he may get problems just viewing on one screen and editing on the other.

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… is part of PL’s export

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And now you brought the out of gamut colors into the sRGB space. What is the difference with selecting sRGB from the beginning?

What you see on the monitor is in the monitor’s color space.

George

PL’s working space is either AdobeRGB (Classic) or their own Wide Gamut. It doesn’t work on images in sRGB. You have to decide on that when you export.

I’m referring to your soft proof example.
If you’re softproofing to a sRGB profile and you’re adjusting the out of gamut colors to that profile, then you’re restricting the colors to that gamut.

George

@mikemyers , let’s see, if the following helps to understand what’s going on.

RAW Workflow (left side of picture)

  • Light comes through the lens and hits the sensor
  • Camera reads data from the sensor. Let’s call it “RAW Data”
  • PhotoLab acts on RAW Data to create the “Customised RAW Image”
    (note that what you see on your screen is not RAW any more. RAW is
    only used to help identify this image as being part of the RAW workflow)
  • Upon Export, PhotoLab applies output settings and creates the output file.
    With Printing, PhotoLab applies output settings and sends data to the printer

JPEG Workflow (right side of picture)

  • Light comes through the lens and hits the sensor
  • Camera reads data from the sensor, applies Picture Style, White Balance etc. and uses the “JPEG Data” to create a separate JPEG file.
  • PhotoLab acts on JPEG Data to create the “Customised JPEG Image”
  • Upon Export, PhotoLab applies output settings and creates the output file.
    With Printing, PhotoLab applies output settings and sends data to the printer

What about…?

  • White Balance set or measured in the camera is only applied to the preview(s) and JPEG files
  • Colour Space set in the camera is only applied to the preview(s) and JPEG files
  • Colour Space of exported files depend on how you set export options. A few of these output options do not define output colour space directly, but indirectly by referencing settings “as shot” or “as soft proofing”. For best control of what you’ll get, I propose you chose output option that name colour spaces directly. Select the widest usable option depending on your targeted use. sRGB for social media or drugstore prints, AdobeRGB if you print yourself and ProPhotoRGB for further editing in other apps, e.g. Lightroom.
  • General Rule Concerning Colour Space Settings: Start as wide as possible, which means 1) shoot RAW if your gear allows it, 2) set AdobeRGB and 3) only set sRGB is your gear has no other option (RAW or AdobeRGB) or if you’re happy with drugstore prints.

Note: The above sounds fairly absolute at times while reality is more tolerant. Observing the above helps to retain your room for operations as wide as possible. Using smaller rooms of operation simply means that you might miss a few options, consequence of easier living.

Now, what should you do: Choose your options, live with the consequences and stop worrying. Why? Technical quality is one thing, but not everything. Cartier Bresson is not known because his photos are less grainy than others’…

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That’s the whole idea, otherwise those looking at the exported file would see poorly rendered, possibly oversaturated, colours, lacking in detail in the out of gamut areas.

In today’s world, it seems to me that almost everything I read or see on TV is based on “opinions”, for better or worse.

  • The less I already understand what’s going on, I somewhat accept what I read, see, or hear.

  • However, the more I know about what’s going on, the more I find flaws or errors in what I read, see, or hear.

Comes down partly to how much I trust the information, and also how important I think the information is to me.

I think the more any of us understand the real situation, the better we get at separating “fact” from “opinion”. Ken Rockwell’s web information is a gold mine of good, useful information. For better or worse, it is “infested” by Ken’s opinion - which he thinks is useful to his readers.

The more I learn, the better I get at separating his facts and opinions, and I so much appreciate the “good stuff” regardless of how he feels about things.

Many people here (most?) understand photographic things better than I do, and I usually come away from this forum thinking I know more than I used to, but sometimes wondering about things people write, that I may or may not really accept - need more information. My attitude - be thankful for the good information, and disregard his opinion if I feel otherwise.

Example - raw. I bet the overall majority of Ken’s readers have no idea what “raw” means, or does, or is, or why they should go through all that effort, if “jpeg” already does everything they care about.

First, thank you for posting all those images, as it is the best explanation I have yet seen showing what this issue is all about.

I thought I solved it completely by setting my camera to sRGB. But from what you write, here’s my confusion:

it certainly matters which colour space you use in PhotoLab

How do I tell PhotoLab how to always use sRGB (unless I tell it otherwise)? Is there a setting I need to select?

I certainly understand a LOT more than a few days ago, but probably not enough - as in the question I just asked @Joanna. I never knew I needed to tell PhotoLab which color space I wanted. Or, I did it so long ago, I’ve long since forgotten.

Correct. I have a ASUS PB278Q LED LCD Monitor which I bought 10 years ago for $500. I also have a 2013 iMac which I added so I had more screen space. The ASUS is calibrated (but this was years ago, so maybe I should do it again). I don’t remember how the iMac was calibrated - I keep the brightness set to match what I see on my ASUS.

(I want to buy the Apple 27" display which @Joanna highly recommended, as soon as I can afford to.)

Yes, I didn’t know I had to select a color space in PhotoLab, or I did it so long ago, I’ve forgotten. I don’t yet know how to use “soft proofing”. I do look at my exported files from PhotoLab, and I haven’t noticed any serious issues…

Been there, done that, was amazed that my images were so awful - and @Joanna had me buy a monitor calibrator, and go through the calibration process. I thought my old image looked good, but that was on my screen. Nowadays I figure if the images look good on both of my displays, AND look good when I view them on my new MacBook Pro, they are probably OK, or close enough to OK that it doesn’t matter.

I obviously know where to find the exported images, but where do I find that chart? How do I see what you posted? I’ve never looked for it, because I never knew it existed…

I guess I need to look up the “color space” for all my displays. iMac 2013 21", iMac 2017 21", ASUS PB278Q, and my new MacBook Pro. Never thought about this before. Me bad.

Confused - all my images have been shot in sRGB, which you just wrote doesn’t work in PhotoLab’s choice of AdobeRGB or “Wide Gamut”. You say it doesn’t work on images in sRGB. So, how do I export in sRGB if PL can’t do that???

I already “knew” that, but your chart make it obvious what is going on. I suspect you need one more step towards the end, showing the possible variations in exporting an image for each color gamut (if I’m even saying that correctly). In your explanation, you suggest exporting in AdobeRGB, but as I currently understand, for digital use (like what I do) sRGB is preferable.

Do I need to figure out how to “soft proof” before exporting every image???

You can’t! As I wrote, PhotoLab only works in either AdobeRGB (its original colour space) now known as “Classic” or “Wide Gamut”, which is their new colour space that allows you to benefit from more colours and tones from RAW files.

You don’t have to. It defaults to Wide Gamut for all new images but you might find some older images were opened in “Classic” before the new colour space was available.

I don’t know how to emphasise this enough - you only need to select a colour space when you export for some purpose and, for that, you need to make a virtual copy and use the soft proofing tools just before exporting.

As @Wolfgang said, it’s on the export dialog…

Note my screenshot list shows sRVB because it is French (Rouge Vert Bleu)

You don’t so much need to look them up, just calibrate all of your screens, then the ICC profile(s) this will create and install will look after translating the image’s colour space to the appropriate one for each of your monitor(s)

When PhotoLab opens a RAW image it automatically translates it into the working colour space, which nowadays, should be Wide Gamut. This will give you the best possible rendering of colours and tones because it is a lot “larger” than either sRGB or AdobeRGB. As others have said, PL ignores the colour space from the camera on RAW images.

Having worked on the image in Wide Gamut, when you export, you select the appropriate colour space for your target (in your case sRGB) and PL will use the ICC profile that you have selected (in your case sRGB) as a “lookup table” to map the colours and tones from Wide Gamut to sRGB.

Some images, that don’t contain strongly saturated or dark colours will sometimes export without having to soft proof but it is always useful to do a quick check.


To check proofing, create a virtual copy and activate the Soft Proofing palette…

Note that the background changes to white and a little icon appears in the thumbnail to indicate you have selected proofing for this version.

Now activate the OOG warning. This does the same kind of job as the under/over-exposure indicators, but for colour gamut.

If you don’t get any indicators, then you can safely export the original image and delete the proofing virtual copy.


Try that much and see what you get. Then come back when you find an OOG image that you can post here and we can work on correcting.

I must be really dense, but your explanation above suddenly made everything clear in my mind. All the confusion evaporated.

I’ve been using the export dialog for so long, but not really paying attention to it. It has already selected the “Standard output” as JPEG. The “ICC Profile” is set to “as shot”, so PhotoLab is set to sRGB which is what I set my camera to. Should I select “Preserve color details”?

I will let this sink in, and later this week I’ll look for OOG image to post (never really understood OOG until now).

I’m probably still confusabobbled somewhat, somewhere, but thanks to all of you, I finally think I understand what’s going on. At least all my questions are now answered in a way that makes sense to me.

Just for a quick break, here’s my latest wall hanging…

In which case, now try reading these tutorials:
https://www.cambridgeincolour.com/color-management-printing.htm
They should help to further reinforce what you are learning here.

Pun with poker terminology: Looks like you got the nuts.

The more I stare at your photo, the more I enjoy it. Zoomed in I see the fine detail. The top is the “top” of the upper blade, and the bottom is the “bottom” of the lowest blade. To my eyes, it needs a little more width, to the let, so it feels “balanced”. Not much, just a little. I love the way the shading goes from so bright to so dark. Everything was obviously lined up perfectly, wit precision. Do any of those parts have any color? Just curious. The pull knobs are perfect too - if they were any higher or lower, the image would’t be as good as how you positioned everything.