Lost Colour

W
Posted By
wilkie
Aug 31, 2005
Views
539
Replies
13
Status
Closed
First, I’m no expert, so I don’t know what I’ve done. I just purchased Scott Kelby’s Photoshop Book for digital Photographers, and it’s got a bunch of really neat info. However, when I went to the print at my local lab (twice at two locations), my images were so dull and dark and colourless, I fear I’ve messed up my whole system.

In the book, he tells you to make a couple of adjustments. First, to switch the RGB colour space to Adobe RGB (1998). Second, he asks us to change the auto colour algorithm throught the levels dialogue/auto/find dark & light colours and change the target colours as follows:

Shadows: R=20, G=20, B=20
Midtones: R=128, G=128, B=128
Highlights: R=240, G=240 B=240.

These values are also recommended when colour correcting using curcves, which he guides us through.

So after making all these changes, my output was, well, awfull.

Have I screwed up my photos? Did I set my settings for the wrong output? Should I re-install Photoshop and go back to the factory presets, which, frankly, seemed OK to me?

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N
nomail
Aug 31, 2005
wrote:

First, I’m no expert, so I don’t know what I’ve done. I just purchased Scott Kelby’s Photoshop Book for digital Photographers, and it’s got a bunch of really neat info. However, when I went to the print at my local lab (twice at two locations), my images were so dull and dark and colourless, I fear I’ve messed up my whole system.

Convert to sRGB before sending anything to such a lab. They ignore color profiles, so your AdobeRGB images are printed as if they were sRGB. I’m surprised Kelby doesn’t mention that.


Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
W
wilkie
Aug 31, 2005
Hang on! If sRGB is the default workspace, why am I converting to AdobeRGB in the first place?
N
nomail
Aug 31, 2005
wilkie wrote:

Hang on! If sRGB is the default workspace, why am I converting to AdobeRGB in the first place?

sRGB is the default workspace for online printing services and other ‘amateur’ printing services like printshops. However, if you print yourself on an inkjet printer, or you use a professional lab, or your images are intended for publication, AdobeRGB is the better choice.

I’m afraid that is the typical Scott Kelby approach: He tells you ‘do this’ or ‘do that’, but usually he doesn’t explain why. Depending on what you do with your images, sRGB may indeed be the better choice for you.


Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
H
Hecate
Sep 1, 2005
On 31 Aug 2005 07:43:31 -0700, wrote:

First, I’m no expert, so I don’t know what I’ve done. I just purchased Scott Kelby’s Photoshop Book for digital Photographers,

That’s what you’ve done…



Hecate – The Real One

Fashion: Buying things you don’t need, with money
you don’t have, to impress people you don’t like…
W
wilkie
Sep 1, 2005
I knew someone was going to say that;)
W
wilkie
Sep 1, 2005
Two more questions:

If my digital camera photos already have an embedded sRGB profile should I just use that as my work space? I seems to me the answer is yes, which would account for 99% of my files.

Does the work space I use affect my output? Should I be doing something like changing to CMYK mode before sending my files to a lab? I normally use the corner photo shop for regular snapshots, but I use a professional lab if I want better quality prints.
D
Dave
Sep 1, 2005
On Wed, 31 Aug 2005 21:35:38 +0200, (Johan W.
Elzenga) wrote:

wilkie wrote:

Hang on! If sRGB is the default workspace, why am I converting to AdobeRGB in the first place?

sRGB is the default workspace for online printing services and other ‘amateur’ printing services like printshops. However, if you print yourself on an inkjet printer, or you use a professional lab, or your images are intended for publication, AdobeRGB is the better choice.

Interesting, the printers doing my work suggested I must use adobeRGB1998.

I’m afraid that is the typical Scott Kelby approach: He tells you ‘do this’ or ‘do that’, but usually he doesn’t explain why. Depending on what you do with your images, sRGB may indeed be the better choice for you.

Mmm Hecate, you seem to be right when you said I must
rather go for Martin Evenings version:-)

Dave
D
Dave
Sep 1, 2005
On 1 Sep 2005 06:52:22 -0700, "wilkie"
wrote:

Two more questions:

If my digital camera photos already have an embedded sRGB profile should I just use that as my work space? I seems to me the answer is yes, which would account for 99% of my files.

yes Wilkie, but you’ve still got to calibrate your monitor

Dave
H
Hecate
Sep 2, 2005
On 1 Sep 2005 06:52:22 -0700, "wilkie"
wrote:

Two more questions:

If my digital camera photos already have an embedded sRGB profile should I just use that as my work space? I seems to me the answer is yes, which would account for 99% of my files.

The answer is yes if you never print your images and you don’t mind clipping your colours.

Does the work space I use affect my output? Should I be doing something like changing to CMYK mode before sending my files to a lab? I normally use the corner photo shop for regular snapshots, but I use a professional lab if I want better quality prints.

Yes, it does. For example, if you use AdobeRGB you get a better fit to the CMYK workspace, which means less clipping of colour when you print. As this is mostly in the yellow/green area, it’s particularly important for, e.g. landscapes.

If you’re printing at a lab, they will usually tell you the colour space they require. You can spot the non-professional labs because they always require sRGB and do things like automatic sharpening, ruining the image you’ve already sharpened in the process.



Hecate – The Real One

Fashion: Buying things you don’t need, with money
you don’t have, to impress people you don’t like…
H
Hecate
Sep 2, 2005
On Thu, 01 Sep 2005 22:57:20 +0200, DD wrote:

On Wed, 31 Aug 2005 21:35:38 +0200, (Johan W.
Elzenga) wrote:

wilkie wrote:

Hang on! If sRGB is the default workspace, why am I converting to AdobeRGB in the first place?

sRGB is the default workspace for online printing services and other ‘amateur’ printing services like printshops. However, if you print yourself on an inkjet printer, or you use a professional lab, or your images are intended for publication, AdobeRGB is the better choice.

Interesting, the printers doing my work suggested I must use adobeRGB1998.

Exactly.:)
I’m afraid that is the typical Scott Kelby approach: He tells you ‘do this’ or ‘do that’, but usually he doesn’t explain why. Depending on what you do with your images, sRGB may indeed be the better choice for you.

Mmm Hecate, you seem to be right when you said I must
rather go for Martin Evenings version:-)
<g> I’m sure he has a lot of knowledge. Unlike Bruce Fraser, Dan Margulis and many others, he seems more concerned to show you what a funny guy he is, and how clever he is.



Hecate – The Real One

Fashion: Buying things you don’t need, with money
you don’t have, to impress people you don’t like…
O
OcTavO
Sep 2, 2005
"DD" wrote in message
Interesting, the printers doing my work suggested I must use adobeRGB1998.

We use AdobeRGB1998 at my place. But IMO nothing beats a hard copy proof for color matching.
PH
PeeVee_Herman
Sep 2, 2005
On Fri, 02 Sep 2005 02:30:23 GMT, "OcTavO"
wrote:

"DD" wrote in message
Interesting, the printers doing my work suggested I must use adobeRGB1998.

We use AdobeRGB1998 at my place. But IMO nothing beats a hard copy proof for color matching.

yah, thats it. I use whatever the printer asks me too, but in the end it dont matter much: I get a matchprint, and then they make color alterations on my file until I’m satisfied, and then they rip their plates direct-to-press from that color corrected file. i take that final matchprint to their press check and tell them, this is YOUR proof, you match it. No excuses and if it doesnt match, we’ll adjust on press as needed. Seems to generally work well.
H
Hecate
Sep 2, 2005
On Fri, 02 Sep 2005 09:28:31 -0400, howldog
wrote:

On Fri, 02 Sep 2005 02:30:23 GMT, "OcTavO"
wrote:

"DD" wrote in message
Interesting, the printers doing my work suggested I must use adobeRGB1998.

We use AdobeRGB1998 at my place. But IMO nothing beats a hard copy proof for color matching.

yah, thats it. I use whatever the printer asks me too, but in the end it dont matter much: I get a matchprint, and then they make color alterations on my file until I’m satisfied, and then they rip their plates direct-to-press from that color corrected file. i take that final matchprint to their press check and tell them, this is YOUR proof, you match it. No excuses and if it doesnt match, we’ll adjust on press as needed. Seems to generally work well.
Yes, exactly. I don’t know any *professional* printer who doesn’t work like that.



Hecate – The Real One

Fashion: Buying things you don’t need, with money
you don’t have, to impress people you don’t like…

MacBook Pro 16” Mockups 🔥

– in 4 materials (clay versions included)

– 12 scenes

– 48 MacBook Pro 16″ mockups

– 6000 x 4500 px

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