Date   

Re: Manual Techinque?

marshyswamp71 <samarsh@...>
 

Does anyone know how to reveal the detail in the shadows manually in
photoshop?
Or maybe you know a link where it shows you how to do it manually.
Or what chapter or links to Dan Margullis techiques?
Hector, if the obvious moves such as curves are not going to do the
job - then there are some common techniques involving different gamma
spaces and blend modes.

Dans book has info towards the back on the false profile method, the
underexposed digicam shot of the award presentation for example - and
if you have patience you can search the archives here for the false
profile thread - which has some good info among the many posts.
Basically you 'lie' about the true gamma of the file and assign a
profile with a lower gamma and or primaries to describe the RGB
numbers in the file in a different manner - which is usually then
converted to working RGB or LAB for other extreme edits.

There is also the Make Ready article for Electronic Publishing which
sparked the whole 'fate and the false profile' thread on this forum:

[http://]

ep.pennnet.com/Articles/Article_Display.cfm?
Section=Articles&Subsection=Display&ARTICLE_ID=112647&KEYWORD=fate%
20and%20the%20false%20profile

[free rego required to view, also check out all the other articles
too]

Some common methods involve using a density/contrast mask generated
from the images channel or luminosity content which isolates the
shadows in the image and a screen blend curve adjustment layer is
applied to the image with this mask. This method can also be
reblended in luminosity mode after the screen blend, if the screen
blend changed too much hue/saturation in the image.

Another trick can be to work on the extreme highlight detail in a
gamma space that is lower than normal, 1.00 > and for the extreme
shadow detail in the higher gamma such as 3.00 <. I have found that
gamma can make a huge impact on the extreme tonal range for many
common edits - but may adversly affect general image content...so the
extreme highlight/shadow gamma corrections will be worked in separate
files and then moved into a more regular gamma space.

Regards,

Stephen Marsh.


B+W in CMYK

Lee Varis
 

Hi all,

If I want to reproduce B+W photos as 4-color what do you recommend for custom CMYK setup in PS ? I've been using heavy GCR as opposed to medium or light but I'm wondering if "maximum" would be better or would it be more problematic with regards to dot gain settings, ect.. (the black plate does seem to be a little too heavy - but maybe that's a good thing for B+W images) Are there any special dot gain settings or curves that you use for magazine repro (the 'zine in question tells me to expect 25-30% dot gain and to limit black to 94% - Total Ink of 280%) In some images I have small areas of full color and I have composited those sections from a light GCR source into the overall "heavy" GCR B+W image - do you foresee any problems with this approach?


regards,

Lee Varis
varis@...
http://www.varis.com
888-964-0024


Spot Colours and iProof

Christian Macey <maceentosh@...>
 

Could you please advice me on Spot Colour usage from QuarkXPress, and Adobe Photoshop, as this seems to be impossible to achieve with iProof software and get consistent colour.
Thankyou


Re: Manual Techinque?

bobineinc@...
 

Hi hector and all
Try this technic
http://Studio.adobe.com:80/learn/hips/totalph56/main.html.
Respect
Jais / Bobine ( pronounce Bo Been)


Re: Manual Techinque?

mact-com <mact@...>
 

Does anyone know how to reveal the detail in the shadows manually in
photoshop?>>

curves. lighten the 3/4 tones (or thereabouts)

Mac Townsend,
Adcom Graphics, Fairfield, California:
Electronic Prepress
www.adcomgraphics.com


Manual Techinque?

Hector Davila
 

Most Photoshop plugins do what can be done manually in photoshop.

Does anyone know how to reveal the detail in the shadows manually in
photoshop?

Common photography exposure problems include backlit subjects,
important details hidden in shadows, and dark areas caused by
uneven flash illumination.
http://www.asf.com/products/plugins/sho/PluginSho.shtml

Or maybe you know a link where it shows you how to do it manually.
Or what chapter or links to Dan Margullis techiques?


Thanks,
Hector Davila


Re: profiles and Photoshop 7 Thanks!

Chris Murphy <lists@...>
 

Dennis Kelly (dennis.p.kelly@...) writes:

Chris..thanks for the quick reply. I'll have to read up on droplets.
One quick question...if I open a jpeg, change only the color profile and
save it, (as a jpeg) am I recompressing and losing color information, or is
the image data left unchanged and just the exif data altered?
I think as long as you don't do a Save As, and the change only occurs to
non-image data, there is not lose of information (artifacting) as there
is no need for the image to be rerun through the JPEG algorithm. At least
my file sizes aren't changes substantially (a few bytes) when I add and
remove guides and do just a save. In the past, if I do a save as though,
file sizes start to drop rapidly indicating to me compression is throwing
out more data. However, I just tried this in Photoshop 7 and the file
size is the same - so it's almost like it knows that there is no change
in the image portion, or that given the quality setting, the data is
compressed as much as it should be.

I'm really not sure :)

Chris Murphy
Color Remedies (tm)
Boulder, CO
303-415-9932


Manual Techinque?

Héctor Antonio Roldán Catalán
 

Hector,

Try converting your images to LAB and adjust the lightness channel, this
will let you increase detail in certain areas without changing color, if you
want to adjust color here too you can adjust the A and B channel.

To achieve the results of the samples included in the link you provided, do
the same move in both channels, A and B using the kind of curves
showed in Dan's book, HSB is LAB, theres a great example. (PS5.) This
will help you to increase color saturation.

Hector Roldan
Prensa Libre,
Guatemala
____________________________________________________
Mensaje enviado por medio de Webmail IntelNet
http://www.intelnet.net.gt


Re: profiles and Photoshop 7

Ric Cohn
 

Many (but not all) of us feel your pain. You need to open the file without
conversion and then do an assign profile to the correct camera profile and
resave.

Unless people are posting crank questions to this site, I think the question
of whether Photoshop's new behavior is a bad idea has been answered by the
users!

Ric Cohn

ric@...
http://www.riccohn.com
212.924.4450

From: "denkjersey" <dennis.p.kelly@...>
Date: Fri, 03 May 2002 01:46:51 -0000
To: colortheory@...
Subject: [colortheory] profiles and Photoshop 7

I'm brand new here, so please excuse me if this has been discussed
before. With Photoshop 6.0 my Fuji S-1 camera files opened
as "untagged" which gave me the option to assign my custom camera
profile (created using Andrew Rodney's technique..thanks Andrew) and
then convert to my standard working space.
Photoshop 7 however, now "sees" my camera files as tagged with the
srgb profile which is gives me no where near as good color as my
custom profile. It's a huge pain having to open files, click
on "don't color manage" assign my profile and then convert to the
working space...plus..I don't want to jpeg these files again...so I'm
saving them as tiffs with the new color space embedded..which is
taking up huge amounts of space.
Does anyone know a way to tell Photoshop not to assign srgb to my
camera files?
Thanks in advance.
Dennis Kelly



To unsubscribe from this group, send an email to:
colortheory-unsubscribe@...



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/


Re: profiles and Photoshop 7

Chris Murphy <lists@...>
 

denkjersey (dennis.p.kelly@...) writes:

Does anyone know a way to tell Photoshop not to assign srgb to my
camera files?
No. Call Fuji, tell them that they are improperly assigning sRGB as the
profile in EXIF data in your files. If you don't complain, it won't get
fixed, and the problem is primarily with the digital camera vendors, not
Adobe. Although Adobe it being derelict for not coming up with a way to
deal with this reality (actually they had a way, but broke it in
Photoshop 7).

What I recommend doing is make a Droplet action in Photoshop that you can
drag an entire folder of images on, and it will remove sRGB, reassign the
profile you want, then convert to your working space and resave the
image. Once it's created, it will be a much quicker way of dealing with
the issue.

Chris Murphy
Color Remedies (tm)
Boulder, CO
303-415-9932


Re: Does Healing brush work in "high-bit" mode?

David Riecks
 

At 06:33 AM 05/02/2002 -0600, Andrew Rodney wrote:

I'd really consider upgrading to PS7 if the healing brush also worked in the
"high-bit" mode.

Has anyone tested this to see if it does?
It does indeed.
Andrew:

OK, that cinches it for me. Thanks to all of you who responded.

BTW, does anybody know if the limitations that Stephen Marsh mentioned in
the beta are still functioning the same (or not functioning as the case may
be)??

David
David Riecks * david@...
701 W. Washington St * Midwest/Chicago ASMP
Champaign, IL 61820 *
ph/fax 877-646-5375 * http://www.riecks.com/


profiles and Photoshop 7

denkjersey
 

I'm brand new here, so please excuse me if this has been discussed
before. With Photoshop 6.0 my Fuji S-1 camera files opened
as "untagged" which gave me the option to assign my custom camera
profile (created using Andrew Rodney's technique..thanks Andrew) and
then convert to my standard working space.
Photoshop 7 however, now "sees" my camera files as tagged with the
srgb profile which is gives me no where near as good color as my
custom profile. It's a huge pain having to open files, click
on "don't color manage" assign my profile and then convert to the
working space...plus..I don't want to jpeg these files again...so I'm
saving them as tiffs with the new color space embedded..which is
taking up huge amounts of space.
Does anyone know a way to tell Photoshop not to assign srgb to my
camera files?
Thanks in advance.
Dennis Kelly


Re: PS 7 profiles & the D1x trouble

Chris Murphy <lists@...>
 

mrmattbarton (mrmattbarton@...) writes:

When I tell PS 7 to convert a new image to my workspace profile
(AdobeRGB) does it really change anything? Assuming the
image is already (secretly) AdobeRGB.
Anytime you use Convert to profile and the source and destination
profiles are different, YES a conversion is occuring. What you want to do
instead of Convert to Profile is use Assign Profile and assign Adobe RGB
(1998) which will not convert the image.

Chris Murphy
Color Remedies (tm)
Boulder, CO
303-415-9932


photoshop

thi lamaire <bobineinc@...>
 

Hi all
Does anyone knows if photoshop 7 can be download to an
O2 (silicongrahpic) Unix computer?
Respect
Jais / Bobine (pronounce Bo Been)

__________________________________________________
Do You Yahoo!?
Yahoo! Health - your guide to health and wellness
http://health.yahoo.com


photoshop

thi lamaire <bobineinc@...>
 

__________________________________________________
Do You Yahoo!?
Yahoo! Health - your guide to health and wellness
http://health.yahoo.com


Re: PS 7 profiles & the D1x trouble

mrmattbarton <mrmattbarton@...>
 

Generally I only shoot Jpegs so I never bothered to install Nikon
Capture. But if it's as good as you say, I'll give it a shot.

Someone from Galbraiths forums suggested I check my
colorsync settings. Which I did and nothing changed. It appears
the D1x is using the AdobeRGB(1998) color space but can't
communicate that to PS 7. So my question is...

When I tell PS 7 to convert a new image to my workspace profile
(AdobeRGB) does it really change anything? Assuming the
image is already (secretly) AdobeRGB.

Matt

--- In colortheory@y..., "Doyle" <doyle@s...> wrote:
Funny thing is when NC 2 reads the EXIF data it says Adobe
RGB.

I can't believe your comments about Nikon Capture. You must
have never used
it. The PS plugin from the Nikon View disk gives you absolutely
no control
over the RAW files.

There is no better option to process RAW files than Nikon
Capture 2. The
quality both color and sharpness easy exceeds 35mm slide
film.

Doyle

----- Original Message -----
From: "mrmattbarton" <mrmattbarton@y...>
To: <colortheory@y...>
Sent: Wednesday, May 01, 2002 10:28 AM
Subject: [colortheory] Re: PS 7 profiles & the D1x trouble


Doyle-
Don't I lose data or something by converting all the time?
Aside from slowing everything down, I worry that would
degrade
my images. I'd rather not use Nikon capture but if it helps, I
might
have to.

Bob-
That sounds reasonable. But if my camera is actually
shooting in Adobe RGB(1998), why is sRGB coming up? Is it
just the default when that option is left blank?
Frankly, I think it's great that PS 7 is checking the EXIF info
for
color space. I just wish it was right.

Matt

--- In colortheory@y..., Bob Smith <yahoo@a...> wrote:
mrmattbarton wrote:

Ideally, we'd like the Adobe RGB (1998) profile to carry
over
from our camera
to our computers.
When you set the camera for Adobe RGB I'm betting that it
doesn't embed the
profile in camera produced JPEGS, it just uses that space
for
output. It
makes little sense to waste precious camera processing
power and disk space
to write the same chunk of data (even a very small one) to
every
image...especially with a camera that prides itself on
shooting
speed. With
no real profile present, it sounds like PS7 is now honoring
the
EXIF data
where PS6 didn't. If a real profile were there, its my
understanding that
it takes precedence over the EXIF tag.

Bob Smith


To unsubscribe from this group, send an email to:
colortheory-unsubscribe@e...



Your use of Yahoo! Groups is subject to http://
docs.yahoo.com/info/terms/


Re: Does Healing brush work in "high-bit" mode?

Andrew Rodney <andrew@...>
 

on 5/1/02 8:45 PM, David Riecks at david@... wrote:


I'd really consider upgrading to PS7 if the healing brush also worked in the
"high-bit" mode.

Has anyone tested this to see if it does?
It does indeed.

Andrew Rodney


Re: Does Healing brush work in "high-bit" mode?

marshyswamp71 <samarsh@...>
 

--- In colortheory@y..., David Riecks <david@r...> wrote:
I really like that the clone tool works in high bit mode in
Photoshop, as
well as curves, levels, etc.

I'd really consider upgrading to PS7 if the healing brush also
worked in the
"high-bit" mode.

Has anyone tested this to see if it does?

TIA,
David, (based on beta not shipping use, not sure if things changed)
yes the healing brush/patch do work in high bit mode - with some
gotchas...

There is no access to the pattern option for both tools and the patch
had the options grayed out, but it did work (just without any choice
on source/destination mode as in reg bit use).

With luck someone with the final version will answer.

Regards,

Stephen Marsh.


Re: Does Healing brush work in "high-bit" mode?

Paul Fawley <pf2001@...>
 

on 5/2/02 3:45 AM, David Riecks at david@... wrote:

I really like that the clone tool works in high bit mode in Photoshop, as
well as curves, levels, etc.

I'd really consider upgrading to PS7 if the healing brush also worked in the
"high-bit" mode.

Has anyone tested this to see if it does?

TIA,


16 bit mode?
yes it does, you can open and retouch 16 bit raw camera files, (imacon3020)
however, you cant then re-open them in the flexcolor software.
anybody know a workround? (maybe in the scanner software)

P


Re: Does Healing brush work in "high-bit" mode?

Russell Proulx
 

On 1 May 2002 at 21:45, David Riecks wrote:

I'd really consider upgrading to PS7 if the healing brush also worked in
the "high-bit" mode.

Has anyone tested this to see if it does?
It works.

Russell