Help on Raw in CS2 red blotches on original 350D/ CS2

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Birilac - 01 Sep 2005 16:07 GMT

Hi,
Just starting out in raw. I have Photoshop cs2 withthe canon plug (3.1)
When I open the canon image (raw) it has a lot of very bright red areas,
mainly on the white areas of the picture. After adjusting the settings or
using "auto" the red blotches are still there. However when I save the
picture as jpg or tiff they are gone and I have a great picture.

If I open the same raw pic in another program (Rawshooter or Canons own
Digital Photo pro ) the red blotches are not present.

The Camera space is set on sRGB as default. I tried to set the camera to
adobe RGB but there is no change.

Any help would be appreciated,

Thanks and regards
Tom

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Thomas T. Veldhouse - 01 Sep 2005 16:27 GMT

> Hi,
> Just starting out in raw. I have Photoshop cs2 withthe canon plug (3.1)
> When I open the canon image (raw) it has a lot of very bright red areas,
> mainly on the white areas of the picture. After adjusting the settings or
> using "auto" the red blotches are still there. However when I save the
> picture as jpg or tiff they are gone and I have a great picture.

You say you are using the Canon plugin? I have no experience with it,
but I can say that Adobe's plugin that comes with CS2 (and can be
updated online) is superb. I would simply remove the plugin and give it
a try again to see if the problem returns or not. I suspect it will
not. My brother shoots Canon RAW and I can open any RAW file he sends
me without issue.

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Thomas T. Veldhouse
Key Fingerprint: 2DB9 813F F510 82C2 E1AE 34D0 D69D 1EDC D5EC AED1
Spammers please contact me at renegade@veldy.net.

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Frank ess - 01 Sep 2005 16:41 GMT

>> Hi,
>> Just starting out in raw. I have Photoshop cs2 withthe canon plug
[quoted text clipped - 14 lines]
> he
> sends me without issue.

Somewhere in there you'l find a switch that makes the blown highlights
render as red splotches. Something similar for blocked lowlights, if
I'm not mistaken.

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Frank ess

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Jeremy Nixon - 01 Sep 2005 23:55 GMT

> Just starting out in raw. I have Photoshop cs2 withthe canon plug (3.1)
> When I open the canon image (raw) it has a lot of very bright red areas,
> mainly on the white areas of the picture. After adjusting the settings or
> using "auto" the red blotches are still there. However when I save the
> picture as jpg or tiff they are gone and I have a great picture.

You have highlight-clipping warnings enabled. Uncheck the "highlights"
thingy.

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Jeremy | jeremy@exit109.com

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Birilac - 02 Sep 2005 06:21 GMT

Thanks to all , especially Frank and Jeremy

Switched off the Highlights clipping warning and all's well

Thanks again

Tom

>> Just starting out in raw. I have Photoshop cs2 withthe canon plug (3.1)
>> When I open the canon image (raw) it has a lot of very bright red areas,
[quoted text clipped - 4 lines]
> You have highlight-clipping warnings enabled. Uncheck the "highlights"
> thingy.

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John A. Stovall - 02 Sep 2005 12:33 GMT

>Thanks to all , especially Frank and Jeremy
>
>Switched off the Highlights clipping warning and all's well

All is not well.

You should leave it on. This how you can tell how well you are
adjusting for blown high-lights. By the way the dark blue spots are
telling you where you've plugged the shadows.

Why are you using ACR if you don't know how it works and what the
settings are for?

I would suggest you need to read:

Real World Camera Raw with Adobe Photoshop CS2 Industrial-Strength
Production Techniques
By Bruce Fraser

*************************************************************

"I believe that all government is evil,
in that all government must necessarily make war upon liberty...

From "Mencken's Creed"
H.L. Mencken (1880 -1956)

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Birilac - 02 Sep 2005 17:55 GMT

>>Thanks to all , especially Frank and Jeremy
>>
[quoted text clipped - 16 lines]
>
>Hi John, Thanks for the help..

Why am I using ACR if I don't know how it works... Simple, to learn how it
works and in time become proficient.
When I started using the Pc in 1984 there were a lot of thingies that I did
not understand both in DOS and within the hardware.Today I am able to make a
reasonable living from the "old Pc", networking, programing and lecturing.
I am sure that is how most of us start, including your good self.
Anyway I will try to get a copy of the book you suggested

Thanks

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John A. Stovall - 04 Sep 2005 18:56 GMT

>>>Thanks to all , especially Frank and Jeremy
>>>
[quoted text clipped - 22 lines]
>reasonable living from the "old Pc", networking, programing and lecturing.
> I am sure that is how most of us start, including your good self.

No, I didn't start that way. I read the manual first.

*************************************************************

"I believe that all government is evil,
in that all government must necessarily make war upon liberty...

From "Mencken's Creed"
H.L. Mencken (1880 -1956)

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no one - 08 Sep 2005 01:03 GMT

> No, I didn't start that way. I read the manual first.

Where's the fun in that?

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