Red

bluekite · Feb 10, 2011

The Sigma SD1 site is plastered with a red theme and a model in a flowing red dress.

http://www.sigma-sd.com/SD1/message.html

I hope they have conquered the blown red problems.

I get this a lot with red roses.

N.
--
There is more happiness in giving than receiving.

Chunsum J Choi · Feb 10, 2011

Just don't ove expose and your reds will be fine.

bluekite said:
The Sigma SD1 site is plastered with a red theme and a model in a flowing red dress.

http://www.sigma-sd.com/SD1/message.html

I hope they have conquered the blown red problems.

I get this a lot with red roses.

N.
--
There is more happiness in giving than receiving.

--
http://www.chunsum.com (Website/Blog)
http://www.pbase.com/chunsum (Gallery)
http://www.flickr.com/photos/chunsum (Gallery)
http://www.pbase.com/sigmadslr (Sigma Users Gallery)

Laurence Matson · Feb 10, 2011

What a novel concept! You mean that exposure is important when using a Sigma camera? Does this apply to photography in general?

Chunsum J Choi said:
bluekite said:

The Sigma SD1 site is plastered with a red theme and a model in a flowing red dress.

http://www.sigma-sd.com/SD1/message.html

I hope they have conquered the blown red problems.

I get this a lot with red roses.

N.
--
There is more happiness in giving than receiving.

Click to expand...

--
http://www.chunsum.com (Website/Blog)
http://www.pbase.com/chunsum (Gallery)
http://www.flickr.com/photos/chunsum (Gallery)
http://www.pbase.com/sigmadslr (Sigma Users Gallery)

--
Laurence
laurence at appledore-farm dot com

La chance ne sourit qu'aux esprits bien préparés.
Chance favors the prepared mind.
Louis Pasteur

http://www.pbase.com/lmatson/root
http://www.pbase.com/sigmadslr/root
http://www.pbase.com/cameras/sigma/dp1
http://www.pbase.com/cameras/sigma/sd14
http://www.pbase.com/cameras/sigma/sd10
http://www.pbase.com/cameras/sigma/sd9

Chunsum J Choi · Feb 10, 2011

in my house. yes. as for the outside world, we'll have to ask Gene.

Laurence Matson said:
What a novel concept! You mean that exposure is important when using a Sigma camera? Does this apply to photography in general?

Chunsum J Choi said:

bluekite said:

The Sigma SD1 site is plastered with a red theme and a model in a flowing red dress.

http://www.sigma-sd.com/SD1/message.html

I hope they have conquered the blown red problems.

I get this a lot with red roses.

N.
--
There is more happiness in giving than receiving.

Click to expand...

--
http://www.chunsum.com (Website/Blog)
http://www.pbase.com/chunsum (Gallery)
http://www.flickr.com/photos/chunsum (Gallery)
http://www.pbase.com/sigmadslr (Sigma Users Gallery)

Click to expand...

--
Laurence
laurence at appledore-farm dot com

La chance ne sourit qu'aux esprits bien préparés.
Chance favors the prepared mind.
Louis Pasteur

http://www.pbase.com/lmatson/root
http://www.pbase.com/sigmadslr/root
http://www.pbase.com/cameras/sigma/dp1
http://www.pbase.com/cameras/sigma/sd14
http://www.pbase.com/cameras/sigma/sd10
http://www.pbase.com/cameras/sigma/sd9

--
http://www.chunsum.com (Website/Blog)
http://www.pbase.com/chunsum (Gallery)
http://www.flickr.com/photos/chunsum (Gallery)
http://www.pbase.com/sigmadslr (Sigma Users Gallery)

Len5742 · Feb 10, 2011

Let's just stipulate up front that I'm reeeally stoopid.

See the following picture. This happens to me all the time.

Now, what should I do w/r/t exposure so that the reds (and yellows and oranges for that matter) come out looking as they should and not like this? Use -n EV on every picture that contains red/yellow/orange flowers? If so, how do I solve for n? Everything else looks just fine to me, if I underexpose the rest won't that lead to other problems?

Thanks for any charity you might bestow on the severely intellectually challenged.

Len

Laurence Matson said:
What a novel concept! You mean that exposure is important when using a Sigma camera? Does this apply to photography in general?

Chunsum J Choi said:

bluekite said:

The Sigma SD1 site is plastered with a red theme and a model in a flowing red dress.

http://www.sigma-sd.com/SD1/message.html

I hope they have conquered the blown red problems.

I get this a lot with red roses.

N.
--
There is more happiness in giving than receiving.

Click to expand...

Click to expand...

KM Legacy · Feb 10, 2011

That's a JPG, which means that all kinds of user-controllable variables went into making it look the way it does. I could take an image with any digital camera and process it so it looks like that. I could also take your image and reduce the saturation, esp. of red, and make it look less extreme.

stanislaw stitchanow · Feb 10, 2011

are they solved also?

Kendall Helmstetter Gelner · Feb 10, 2011

Len5742 said:
Let's just stipulate up front that I'm reeeally stoopid.

See the following picture. This happens to me all the time.

Now, what should I do w/r/t exposure so that the reds (and yellows and oranges for that matter) come out looking as they should and not like this? Use -n EV on every picture that contains red/yellow/orange flowers? If so, how do I solve for n?

The solution is pretty much always -0.7 (2/3 stop) unless the red is vibrant and in direct sunlight surrounded by shadowed areas, then possibly up to -1.3.

If you turn on warnings you'll see highlights go, that can also help (I agree it looks ugly; I generally just eyeball it).

I'm a bit surprised reds blew out in that particular image though, what RAW converter did you use? Do you have the X3F file you could share?

Len5742 said:
Everything else looks just fine to me, if I underexpose the rest won't that lead to other problems?

You can recover more shadow detail than you might think and -0.7 is not really that far to recover from.

--
---> Kendall
http://InsideAperture.com
http://www.pbase.com/kgelner
http://www.pbase.com/sigmadslr/user_home

KM Legacy · Feb 10, 2011

With my Bayer sensor camera I often find that an image can be correctly exposed overall, yet a strong primary color like red or yellow will be completely blown out. So it's not just a Sigma problem

DavidMillier · Feb 10, 2011

I'm not convinced about this with my DP1 at least. I've done some tests where I have induced flourescent dayglo reds or magenta reds even with 3 stops underexposure.

--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

DavidMillier · Feb 10, 2011

With my DP1 that is what generally happens (in raw) sometimes even with a couple of stops less exposure so that the rest of the image is very dark.

This is not a user error situation, it's inherent in the camera.

--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

DavidMillier · Feb 10, 2011

Kendall

-3 stops is often not enough. This is not a simple matter of exposure.
--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

Zone8 · Feb 11, 2011

I don't get all these reported problems with colours - but then, if colour is important (I mostly work for B+W) I always use CWB.

Using AUTO in SPP for processing has always caused colour problems. I expose correctly and use the basic X3F file for making a JPEG for working. I have posted numerous examples over the years from the SD9 and SD14.

Not flowers but perhaps flowering?

Zone8

The photograph isolates and perpetuates a moment of time: an important and revealing moment, or an unimportant and meaningless one, depending upon the photographer's understanding of his subject and mastery of his process. -Edward Weston
http://www.photosnowdonia.co.uk/ZPS
LINK: For B+W with Epson 1400 using black ink only:

http://forums.dpreview.com/forums/read.asp?forum=1003&message=33148491&q=zone8+1400+b+w+plain&qf=m

Usee · Feb 11, 2011

Hi Dave,

DMillier said:
I'm not convinced about this with my DP1 at least. I've done some tests where I have induced flourescent dayglo reds or magenta reds even with 3 stops underexposure.

--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

another possibility is to replace the DP1 filter, with the DP1s filter:

...or just buy a DP1s!

-

P.S.:

Because of the far better (N)IR suppression, the DP1s is less suited for IR photography than the DP1, if shorter exposure times are wanted.

If one like, one can make a test with a DP1 and DP1s, both additional equipped with a filter for (N)IR photography.

A 665 nm or even a 715 nm filter shows huge differences in exposure time between the DP1 and DP1s.

--
If I´m writing in bold letters, I do not shout , like one mentioned to me -
I´m just trying to improve the readability!

Uli

D Cox · Feb 11, 2011

Those solid red flowers remind me of Kodachrome. ;-)

DavidMillier · Feb 11, 2011

Does this mean the original DP1 might benefit from the use of an external Hot mirror IR filter?

I remember this was one of the solutions put forward for solving noise problems with the ill-fated Nikon D2h and of course Leica M8.

--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

DavidMillier · Feb 11, 2011

The reds there aren't blown or mis-coloured but they are right on the edge, aren't they. That may be a faithful rendition but it doesn't look like one ;-) Personally, I'd prefer more restrained red.

--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

Usee · Feb 11, 2011

Hello Dave,

DMillier said:
Does this mean the original DP1 might benefit from the use of an external Hot mirror IR filter?

I remember this was one of the solutions put forward for solving noise problems with the ill-fated Nikon D2h and of course Leica M8.

--
Galleries and website: http://www.whisperingcat.co.uk/default.shtml

theoretical yes,

but a external Hot mirror IR filter can cause more problems than it would solve, if attached outside in front of the DP1 lens.

--
If I´m writing in bold letters, I do not shout , like one mentioned to me -
I´m just trying to improve the readability!

Uli

Zone8 · Feb 11, 2011

DMillier said:
The reds there aren't blown or mis-coloured but they are right on the edge, aren't they. That may be a faithful rendition but it doesn't look like one ;-) Personally, I'd prefer more restrained red.

Somehow, Dave, I don't think the señoritas would agree with you.

Zone8

The photograph isolates and perpetuates a moment of time: an important and revealing moment, or an unimportant and meaningless one, depending upon the photographer's understanding of his subject and mastery of his process. -Edward Weston
http://www.photosnowdonia.co.uk/ZPS
LINK: For B+W with Epson 1400 using black ink only:

http://forums.dpreview.com/forums/read.asp?forum=1003&message=33148491&q=zone8+1400+b+w+plain&qf=m

Len5742 · Feb 11, 2011

Thanks for the suggestions.

The photo is from SPP 4.2, all settings auto, saturation at .4 or so. The excessive red saturation is there at 0.

I have to run, maybe I can upload the RAW later.

Len

Kendall Helmstetter Gelner said:
Len5742 said:

Let's just stipulate up front that I'm reeeally stoopid.

See the following picture. This happens to me all the time.

Now, what should I do w/r/t exposure so that the reds (and yellows and oranges for that matter) come out looking as they should and not like this? Use -n EV on every picture that contains red/yellow/orange flowers? If so, how do I solve for n?

Click to expand...

The solution is pretty much always -0.7 (2/3 stop) unless the red is vibrant and in direct sunlight surrounded by shadowed areas, then possibly up to -1.3.

If you turn on warnings you'll see highlights go, that can also help (I agree it looks ugly; I generally just eyeball it).

I'm a bit surprised reds blew out in that particular image though, what RAW converter did you use? Do you have the X3F file you could share?

Kendall Helmstetter Gelner said:

Everything else looks just fine to me, if I underexpose the rest won't that lead to other problems?

Click to expand...

You can recover more shadow detail than you might think and -0.7 is not really that far to recover from.

--
---> Kendall
http://InsideAperture.com
http://www.pbase.com/kgelner
http://www.pbase.com/sigmadslr/user_home

Red

Leading Member

Veteran Member

Forum Pro

Veteran Member

Member

Senior Member

Senior Member

Forum Pro

Senior Member

Forum Pro

Forum Pro

Forum Pro

Forum Pro

Senior Member

Forum Pro

Forum Pro

Forum Pro

Senior Member

Forum Pro

Member

Similar threads

Keyboard shortcuts