Scanned slides blue

"tony cooper" <tony_cooper213 RemoveThis @earthlink.net> wrote in message
news:j81aq3hv8s2q3tj2pbdk3ff7k0egau1ume@4ax.com...
> On Sat, 02 Feb 2008 18:01:46 -0500, Talker <Talker RemoveThis @thegood.com> wrote:
>
>>On Fri, 01 Feb 2008 22:07:23 -0500, tony cooper
>><tony_cooper213 RemoveThis @earthlink.net> wrote:
>>
>> Kodak's ROC filter:
>>http://asf.com/products/plugins/rocpro/pluginROCPRO
>
>>
>>a plugin for PhotoShop might be what you're looking for. Here's what
>>it did for your pictures. I just used the default settings in my
>>older version of it.
>>
>>http://www.pixentral.com/show.php?picture=1B6uGSuW54FwBlw8eQinVoCSOYVBIP
>>
>>http://www.pixentral.com/show.php?picture=196Mg1DytWzCGCdWgYIOeGoAup86Hu
>>
> That's cool. Expensive, but nice.
>
> --
>
> Tony Cooper - Orlando, Florida

How about a free action to get the blue out.. I used the underwater
correction action By James Connell on these:
http://img142.imagevenue.com/view.php?image=77652_Underwater_122_1050lo.jpg

OR
Underwater action with Auto color (Looks GOOD)
http://img7.imagevenue.com/view.php?image=77664_underwaterAction_plus_...oColor_

the action can be found at:

http://www.adobe.com/cfusion/exchange/index.cfm?event=extensionDetail&...id=1042
(sign up.. it is free)

OR if you still like the hard way

How to quickly remove a color cast
(without introducing a new one)

(Copied from http://www.johanfoto.com/Site/Pages/Colorcast.html )

A color cast caused by artificial light can be difficult to remove,
because simply using the grey eyedropper in 'Levels' or 'Curves' will
often create a new cast in places that were not lit by the artificial
light source. Scenes with mixed lighting, such as fluorescent and day
light, can also be tricky. The following alternative method often works
better than the grey eyedropper, and is just as easy.

Step 1:
Select the eyedropper tool and click on a place in the image that should
be neutral. This is to sample the color of the color cast.

Step 2:
Make a new layer and fill this layer with the color you've just sampled
(Edit - Fill - Foreground Color).
Then use 'Image - Adjustments - Invert' to invert this color.

Step 3:
Go to the Layers pallette, and change the layer mode from 'Normal' to
'Color'. Next, change the opacity of this layer to anything that makes
the original photo come through without a color cast. Usually this will
be around 35%, but it can also be as low as 25% before you are satisfied
with the colors.
--
"Granny"
Old N Slow N Prefer Quick N Easy
 >> Stay informed about: Scanned slides blue 

"tony cooper" <tony_cooper213.DeleteThis@earthlink.net> wrote in message
....
> This must be the blue cast that the color correction puts in. This
> one is easy to work with. Some are more difficult because the tweak
> changes things that shouldn't be changed. I can't take the time to
> mask and re-tweak with so many slides.
>
> http://i48.photobucket.com/albums/f244/cooper213/irelandmilk.jpg is
> also straight from the scanner. This one I can correct in two steps:
> a tweak in Curves RGB setting the white point and then a tweak in the
> Blue Channel to change the window frame and walls. The result is
> pretty close to what I actually remember of the colors.
>
> Both of these are slides from a 1969 vacation...the first in London
> and the second in Ireland.

Hi Tony,

Here's my humble attempt at correcting your two images, using curves only
with no masks:
http://mike.russell-home.net/tmp/blue-slides/flowerman-corr.jpg
http://mike.russell-home.net/tmp/blue-slides/irelandmilk-corr.jpg

> The only thing I don't understand - but it doesn't really make a
> difference - is why these two pictures (and many like them) came out
> with a blue cast (stronger in the milk bottles) but most of the
> pictures require no adjustments at all. In some I might tick Levels a
> bit to brighten them up, but straight from the scanner would be OK.

The blue cast is very severe, and I would suspect that your scanner settings
are off, or that there is some other problem, such as the automatic color
correction of the scanner software.

I'm always on the lookout for interesting images for students to try their
hand at in the curve class. If you would be willing to allow me to use
them, please contact me offline at mike at curvemeister.com.
--
Mike Russell - www.curvemeister.com
 >> Stay informed about: Scanned slides blue 

On Sun, 03 Feb 2008 09:01:26 GMT, "Mike Russell"
<RE-MOVEmike RemoveThis @Curvemeister.comRE-MOVE> wrote:

>"tony cooper" <tony_cooper213 RemoveThis @earthlink.net> wrote in message
>...
>> This must be the blue cast that the color correction puts in. This
>> one is easy to work with. Some are more difficult because the tweak
>> changes things that shouldn't be changed. I can't take the time to
>> mask and re-tweak with so many slides.
>>
>> http://i48.photobucket.com/albums/f244/cooper213/irelandmilk.jpg is
>> also straight from the scanner. This one I can correct in two steps:
>> a tweak in Curves RGB setting the white point and then a tweak in the
>> Blue Channel to change the window frame and walls. The result is
>> pretty close to what I actually remember of the colors.
>>
>> Both of these are slides from a 1969 vacation...the first in London
>> and the second in Ireland.
>
>Hi Tony,
>
>Here's my humble attempt at correcting your two images, using curves only
>with no masks:
>http://mike.russell-home.net/tmp/blue-slides/flowerman-corr.jpg
>http://mike.russell-home.net/tmp/blue-slides/irelandmilk-corr.jpg
>
>> The only thing I don't understand - but it doesn't really make a
>> difference - is why these two pictures (and many like them) came out
>> with a blue cast (stronger in the milk bottles) but most of the
>> pictures require no adjustments at all. In some I might tick Levels a
>> bit to brighten them up, but straight from the scanner would be OK.
>
>The blue cast is very severe, and I would suspect that your scanner settings
>are off, or that there is some other problem, such as the automatic color
>correction of the scanner software.

A one-time glitch in the milk bottle image being that severe blue, and
out of 400 or more slides copied so far. The blue cast in the London
flower seller is something seen in more than half of the slides.

I use a Minolta Dimage Scan Elite F-2900 dedicated slide/film scanner.
Corrections can be made during scanning from the preview, but I don't
use that feature. I import into PS 7.0 and do the corrections there.

The flower man slide is dead-on, but the milk bottle image is wrong.
The frame is aged white paint, and almost cream colored. I can get
the frame right, but I can't get the milk bottles as white as you have
without masking and isolating them. It must be the green you've
brought out.

Even though this is a 1969 slide, I have a better memory of the
correct image than you might think. I had it made into a 5 x 7 and
mounted. It was accidently destroyed a few years ago when a hurricane
caused a leak in our roof. So, my memory of the colors only has to go
back a few years.



--

Tony Cooper - Orlando, Florida
 >> Stay informed about: Scanned slides blue 

This message is not archived
 >> Stay informed about: Scanned slides blue 

"tony cooper" <tony_cooper213 DeleteThis @earthlink.net> wrote in message
news:1oebq310pe11cb2atpt5o99e4ums19fd45@4ax.com...

....
> The flower man slide is dead-on, but the milk bottle image is wrong.
> The frame is aged white paint, and almost cream colored. I can get
> the frame right, but I can't get the milk bottles as white as you have
> without masking and isolating them. It must be the green you've
> brought out.

I got the milk right anyway One of the things that interested me about
this image, and why I want to use it in my class, is that if the color cast
is removed by setting the milk to a neutral color, you get one color for the
frames in Lab and a completely different one in RGB. I went with bright
green, given the Irish origin of the image.

Here's a pointer to the RGB version, similar to the Digital ROC image, but
with a more saturated cream color to the frame:
http://mike.russell-home.net/tmp/blue-slides/irelandmilk-rgb-1.jpg
....
--
Mike Russell - www.curvemeister.com
 >> Stay informed about: Scanned slides blue 

"Mike Russell" <RE-MOVEmike.TakeThisOut@Curvemeister.comRE-MOVE> wrote in message
news:wqppj.5502$J41.3243@newssvr14.news.prodigy.net...
> "tony cooper" <tony_cooper213.TakeThisOut@earthlink.net> wrote in message
> news:1oebq310pe11cb2atpt5o99e4ums19fd45@4ax.com...
>
> ...
>> The flower man slide is dead-on, but the milk bottle image is wrong.
>> The frame is aged white paint, and almost cream colored. I can get
>> the frame right, but I can't get the milk bottles as white as you have
>> without masking and isolating them. It must be the green you've
>> brought out.
>
> I got the milk right anyway One of the things that interested me
> about this image, and why I want to use it in my class, is that if the
> color cast is removed by setting the milk to a neutral color, you get one
> color for the frames in Lab and a completely different one in RGB. I went
> with bright green, given the Irish origin of the image.
>
> Here's a pointer to the RGB version, similar to the Digital ROC image, but
> with a more saturated cream color to the frame:
> http://mike.russell-home.net/tmp/blue-slides/irelandmilk-rgb-1.jpg
> ...
> --
> Mike Russell - www.curvemeister.com
>
>

Do I see a layer of cream on top of the milk? I can remember that milk was
delivered this way when I was a child, un-homogenized.
Dinosaurs still walked the earth then.
 >> Stay informed about: Scanned slides blue 

On Sun, 03 Feb 2008 20:25:00 GMT, "Mike Russell"
<RE-MOVEmike DeleteThis @Curvemeister.comRE-MOVE> wrote:

>"tony cooper" <tony_cooper213 DeleteThis @earthlink.net> wrote in message
>news:1oebq310pe11cb2atpt5o99e4ums19fd45@4ax.com...
>
>...
>> The flower man slide is dead-on, but the milk bottle image is wrong.
>> The frame is aged white paint, and almost cream colored. I can get
>> the frame right, but I can't get the milk bottles as white as you have
>> without masking and isolating them. It must be the green you've
>> brought out.
>
>I got the milk right anyway One of the things that interested me about
>this image, and why I want to use it in my class, is that if the color cast
>is removed by setting the milk to a neutral color, you get one color for the
>frames in Lab and a completely different one in RGB. I went with bright
>green, given the Irish origin of the image.
>
>Here's a pointer to the RGB version, similar to the Digital ROC image, but
>with a more saturated cream color to the frame:
>http://mike.russell-home.net/tmp/blue-slides/irelandmilk-rgb-1.jpg
>...

There you go. Old white paint with a tinge of mildew. The mildew is
probably right for the window. It would be interesting to know the
effect on age on paint in some older buildings like this. Milk and
lime were once paint ingredients. The typical Irish cottage is
plastered and whitewashed, not painted, but the wood trim would have
been painted. I don't know what "whitewash" is composed of.

That picture, by the way was not set up. The cottage was still a
residence, and the milk was for the residents.


--

Tony Cooper - Orlando, Florida
 >> Stay informed about: Scanned slides blue 

tony cooper wrote:

> http://i48.photobucket.com/albums/f244/cooper213/irelandmilk.jpg is
> also straight from the scanner. This one I can correct in two steps:
> a tweak in Curves RGB setting the white point and then a tweak in the
> Blue Channel to change the window frame and walls. The result is
> pretty close to what I actually remember of the colors.

Hi Tony,

I'm wondering if you've tried using the eyedropper tools in a levels or
curves adjustment layer. I find that it works quite well on overall
color casts. Here's my three click attempt at correcting your image:

http://home.comcast.net/~nikonshooter/irelandmilk-rgb-2.jpg

--
Lee


It is much easier to suggest solutions when you know nothing
about the problem.
 >> Stay informed about: Scanned slides blue 

On Tue, 5 Feb 2008 10:00:04 +0000 (UTC), Sundance Kid <hole.TakeThisOut@the.wall>
wrote:

>tony cooper wrote:
>
>> http://i48.photobucket.com/albums/f244/cooper213/irelandmilk.jpg is
>> also straight from the scanner. This one I can correct in two steps:
>> a tweak in Curves RGB setting the white point and then a tweak in the
>> Blue Channel to change the window frame and walls. The result is
>> pretty close to what I actually remember of the colors.
>
>Hi Tony,
>
>I'm wondering if you've tried using the eyedropper tools in a levels or
>curves adjustment layer. I find that it works quite well on overall
>color casts. Here's my three click attempt at correcting your image:
>
>http://home.comcast.net/~nikonshooter/irelandmilk-rgb-2.jpg

Yes, I do. One of the reasons that I posted this topic is that, with
hundreds of slides that I've corrected to some amount, no one sequence
of corrective actions seems to work on all. I keep thinking that
there's one "magic" set of steps that will work for all.

I usually try Curves first, and use the eyedropper for white then
black. I often forget gray because the gray point doesn't seem to do
anything on most slides.

Sometimes, though, using the eyedropper on white first "blows out" the
image or the black point over-corrects and I have to go to some other
tool.

While I normally work with PS 7.0, I also have Elements 5.0. In the
"Quick" mode, Elements has a color temperature slider that can "warm
up" an image. There have been some slides that I've corrected with
this tool in one step that I haven't been able to correct in PS 7.0 in
half a dozen steps.

The slides I'm working with are from the 60s through the 70s and vary
widely - quite widely - in how they scan. Some need no adjustment and
some need extensive adjustment. I have no idea why there's such a
great difference. I used the same camera (rangefinder Konica T3) and
the same type of film (Kodak ASA 200) on all. Most of the processing
was to Kodak slides, but some are non-Kodak.

It's been an interesting project.

Your correction is excellent, by the way. I ended up with a very
similar result.




--

Tony Cooper - Orlando, Florida
 >> Stay informed about: Scanned slides blue 

"Sundance Kid" <hole RemoveThis @the.wall> wrote in message
news:Xns9A3B32DE2F3DFa1d3g5j7l9@127.0.0.1...
> tony cooper wrote:
>
>> http://i48.photobucket.com/albums/f244/cooper213/irelandmilk.jpg is
>> also straight from the scanner. This one I can correct in two steps:
>> a tweak in Curves RGB setting the white point and then a tweak in the
>> Blue Channel to change the window frame and walls. The result is
>> pretty close to what I actually remember of the colors.
>
> Hi Tony,
>
> I'm wondering if you've tried using the eyedropper tools in a levels or
> curves adjustment layer. I find that it works quite well on overall
> color casts. Here's my three click attempt at correcting your image:
>
> http://home.comcast.net/~nikonshooter/irelandmilk-rgb-2.jpg

Very nice job, Lee! It's as good or better than mine.
--
Mike Russell - www.curvemeister.com
 >> Stay informed about: Scanned slides blue 

tony cooper wrote:

> I usually try Curves first, and use the eyedropper for white then
> black. I often forget gray because the gray point doesn't seem to
> do anything on most slides.

Try clicking around the image until you find something that works.
I find that the gray eyedropper is the most important of the three.
Even using it alone can get you 90% there:

http://home.comcast.net/~nikonshooter/irelandmilk-rgb-3.jpg

> Sometimes, though, using the eyedropper on white first "blows out"
> the image or the black point over-corrects and I have to go to
> some other tool.
>

Don't forget, you're not committed to the results of your first click
with each eyedropper - it usually takes a few clicks to get it "just
right".

> Your correction is excellent, by the way. I ended up with a very
> similar result.

Thanks. Try keeping that image open and dragging that adjustment layer
into similarly discolored images - it may save you some work...

Good luck!

--
Lee


It is much easier to suggest solutions when you know nothing
about the problem.
 >> Stay informed about: Scanned slides blue 

Mike Russell wrote:

>> Hi Tony,
>>
>> I'm wondering if you've tried using the eyedropper tools in a
>> levels or curves adjustment layer. I find that it works quite
>> well on overall color casts. Here's my three click attempt at
>> correcting your image:
>>
>> http://home.comcast.net/~nikonshooter/irelandmilk-rgb-2.jpg
>
> Very nice job, Lee! It's as good or better than mine.
>

Thanks, Mike. So many ways to work in Photoshop - and always so much
more to learn.
You seem to know a lot about LAB mode. I rarely work there, but I've
tried the LAB sharpening method. One of these days I'll get around to
reading Dan Margulis' book...

--
Lee


It is much easier to suggest solutions when you know nothing
about the problem.
 >> Stay informed about: Scanned slides blue 

"Sundance Kid" <hole.TakeThisOut@the.wall> wrote in message
news:Xns9A3B86D14E72a1d3g5j7l9@127.0.0.1...
....
> Thanks, Mike. So many ways to work in Photoshop - and always so much
> more to learn.

Each little piece helps.

> You seem to know a lot about LAB mode. I rarely work there, but I've
> tried the LAB sharpening method. One of these days I'll get around to
> reading Dan Margulis' book...

Alas, with such books I've found that just buying it doesn't mean I know
what's in it
--
Mike Russell - www.curvemeister.com
 >> Stay informed about: Scanned slides blue