Sigma SD1M wrong colors

Started Mar 27, 2013 | Discussions
anfat
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Sigma SD1M wrong colors
Mar 27, 2013

Hi, I have a new SD1M that produce colors not true: some reds are orange, some greens are light blue; I've tried to change wb and to set up a personal wb, but with no result...which could be the cause?

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Hornbrille
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Re: Sigma SD1M wrong colors
In reply to anfat, Mar 27, 2013

Sounds like Foveon blue color mode. Post the picture for better answers.

Uwe 8-)

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Kendall Helmstetter Gelner
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Some things to check
In reply to anfat, Mar 27, 2013

anfat wrote:

Hi, I have a new SD1M that produce colors not true: some reds are orange, some greens are light blue; I've tried to change wb and to set up a personal wb, but with no result...which could be the cause?

Can you post an example?

Some things to look at:

1) Have you tried bringing down exposure in SPP - the reds going to orange can be a result of over-exposure.

2) What color mode are you shooting in? Neutral yields I think the closest to real colors.  Also if reds still seem a bit orange, try +0.2-+0.3 saturation in SPP (processing a Neutral color mode image).

3) Do you have the SPP working space set to sRGB?  Display colors seem odd otherwise.  It doesn't mean you cannot still save in AdobeRGB or ProPhoto, it only affects review.

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anfat
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Re: Some things to check
In reply to Kendall Helmstetter Gelner, Mar 27, 2013

color mode is neutral, color space srgb...

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ArvoJ
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Re: Sigma SD1M wrong colors
In reply to anfat, Mar 27, 2013

Sample X3F file would be really helpful.

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anfat
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Re: Some things to check
In reply to Kendall Helmstetter Gelner, Mar 27, 2013

the same picture with the sd1m and with dp2m...that one shot with dp2m has true colors...

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Roland Karlsson
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Re: Something is wrong
In reply to anfat, Mar 27, 2013

Woa!!!

Yeah, something is wrong here.

I cant help you, but I sure hope someone else can.

Maybe publishing the X3F file might be a good idea.

EDIT:

Just one thought. Are you sure about the DP image being right?

The top of the chair, and also other red parts look somewhat too much pink too me. Maybe they are, just look little curious.

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anfat
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Re: Some things to check
In reply to Kendall Helmstetter Gelner, Mar 27, 2013

same two cameras and same setting: neutral, auto wb...

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Roland Karlsson
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Re: Some things to check
In reply to anfat, Mar 27, 2013

Hmmmm ... neither look correct to me.  The SD image is too orange, but the DP image feels too pink to me. Should it not be redder?

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Laurence Matson
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Re: Some things to check
In reply to anfat, Mar 27, 2013

Could you please send the raw files. You can use Yousendit if you do not have a server or use something like Dropbox. One per message with Yousendit.

anfat wrote:

same two cameras and same setting: neutral, auto wb...

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Laurence
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anfat
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Re: Sigma SD1M wrong colors
In reply to ArvoJ, Mar 27, 2013

ArvoJ wrote:

Sample X3F file would be really helpful.

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Sigma/Foveon information collection and little galleries:
http://www.stv.ee/~donq/sigma.htm
http://www.stv.ee/~donq/images.htm

Is it possible to charge a so large file?

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Laurence Matson
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Three color settings to check
In reply to anfat, Mar 27, 2013

There are three basic color settings to check in order for us to figure out what is going on.

- On the back of each camera, click the QS button twice. At the top right it should show QS2. The top box is for the white balance setting. Set this to the same value on both cameras (anything will do for comparisons).

- On the bottom of the same QS2 menu window is the color mode. This is somewhat less important for the moment, but still make sure both are at your chosen Neutral setting.

- Then in SPP, make sure you still have those settings in the respective windows in the tool set (White Balance Setting and Color Mode). And when you export the file, make sure you use your chosen sRGB each time.

anfat wrote:

Hi, I have a new SD1M that produce colors not true: some reds are orange, some greens are light blue; I've tried to change wb and to set up a personal wb, but with no result...which could be the cause?

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Laurence
laurence at appledore-farm dot com
"The fact of being reported multiplies the apparent extent of any deplorable development by five- to tenfold" (or any figure the reader would care to supply).
Barbara Tuchman, A Distant Mirror
http://www.pbase.com/lmatson
http://www.pbase.com/sigmadslr
http://www.howardmyerslaw.com

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Laurence Matson
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Re: Sigma SD1M wrong colors
In reply to anfat, Mar 27, 2013

anfat wrote:

ArvoJ wrote:

Sample X3F file would be really helpful.

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Arvo
Sigma/Foveon information collection and little galleries:
http://www.stv.ee/~donq/sigma.htm
http://www.stv.ee/~donq/images.htm

Is it possible to charge a so large file?

Try this:

https://www.yousendit.com/

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Laurence
laurence at appledore-farm dot com
"The fact of being reported multiplies the apparent extent of any deplorable development by five- to tenfold" (or any figure the reader would care to supply).
Barbara Tuchman, A Distant Mirror
http://www.pbase.com/lmatson
http://www.pbase.com/sigmadslr
http://www.howardmyerslaw.com

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anfat
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Re: Three color settings to check
In reply to Laurence Matson, Mar 27, 2013

yes, neutral, auto wb, srgb for all the four pictures...

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Laurence Matson
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Re: Three color settings to check
In reply to anfat, Mar 27, 2013

anfat wrote:

yes, neutral, auto wb, srgb for all the four pictures...

Just for a test, set WB to overcast or something not Auto.

Also, make sure you get the metering right.

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Laurence
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"The fact of being reported multiplies the apparent extent of any deplorable development by five- to tenfold" (or any figure the reader would care to supply).
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http://www.pbase.com/sigmadslr
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anfat
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Re: Three color settings to check
In reply to Laurence Matson, Mar 27, 2013

I have tried all setting in the past days...no different result...

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Tom Schum
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Re: Sigma SD1M wrong colors
In reply to anfat, Mar 27, 2013

I've noticed it on my SD1 also.

Reds go orange on a regular basis, especially under tungsten light.

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Tom Schum

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anfat
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Re: Sigma SD1M wrong colors
In reply to Laurence Matson, Mar 27, 2013

if I use yousendit I have to post the links?

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Davethepom
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Me too Tom...
In reply to Tom Schum, Mar 27, 2013

... but usually it's in cases where there is a strong spot-light or un-natural light on the red surface and it's usually over exposed as a result. A classic scenario would be a car show, with RED Ferrari. Usually it's also when the finish is highly polished, so there may be a reflection / reflective issue there too. I'm at work at the moment so I don't have examples.

Pom

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anfat
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Re: Sigma SD1M wrong colors
In reply to Tom Schum, Mar 27, 2013

other color...

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