My R-D1 Magenta Problem

[Tuolumne]

Everyone says that the R-D1 does not have the same magenta color issues as the M8. Not so, in my experience. I recently started shooting alot of theater where black is the predominant color - clothing, curtains, etc. Attached is an example from a show I shot recently. Everyone was wearing a shade of black, not the ugly magenta clothes you see in the photo. The curtain in the left rear - pitch black, not purple. The only true colors here are skin, hair, the white chair to the left and the red curtain. I just ordered two IR filters from Tony Rose to address this problem. I will likely need more.

I thought Epson had used the stock Nikon D100 sensor in the R-D1. If so, why does it show a magenta cast?

/T

 

[victoriapio]

I shoot a lot of the performing arts and businessmen in suits and have had the same problem with the rd1s. I understand the Nikon D100 has similar problems just not as bad.

I thought I read that Epson used the d100 sensor, but without the mouire filter.

O.C.

 

[Didier]

The magenta cast has reportedly happened under certain light conditions. But I never had it that extreme with mine. Btw it's the Nikon D70 sensor in the Epson.
Didier

 

[Tuolumne]

The magenta cast has reportedly happened under certain light conditions. But I never had it that extreme with mine. Btw it's the Nikon D70 sensor in the Epson.
Didier

Certain kinds of theater lighting seem to bring out the worst problems. I never really noticed the magenta cast before I started shooting theater.

Does anyone know how to get rid of it in post-processing? I've read this is "easy" with photoshop. But the cast is so extensive that I usually ruin another part of the photo when I try to get rid of it. In particular, the girl on the left gets the colored-hair frizzies when I try changing the magenta curtain to black. Anyone have an "easy" way to fix this, other than using a filter in the first place? :bang:

/T

 

[Didier]

Does anyone know how to get rid of it in post-processing?

Convert to b&w... 😀
D.

 

[Tuolumne]

Convert to b&w... 😀
D.

Believe it or not, that's what I was going to do. I have a few hundred like this. 🙁

/T

 

[sevres_babylone]

I have had problems from time to time. Sometimes I use Color Replace in PS, sometimes on a separate layer as a first step in trying to isolate the correction if necessary. Other times, I just switch to black and white. I have not found the problem serious enough for me to contemplate getting IR filters.

 

[nksyoon]

Very noticeable with typical stage lights:

 

[tomasis]

I experience magenta on some shots with rd1. but I don't panic since I usually convert them all to B&W 🙂

magenta appears in some certain lightings conditions as Didier said. In my case, it happens under halogen and "old type" lamps.

Funny that not only cloth types but also some metal paints appear magenta coloured.

I didn't have bought a 21 mm viewfinder yet 😱:bang:😱

 

[Gabriel M.A.]

Certain kinds of theater lighting seem to bring out the worst problems. I never really noticed the magenta cast before I started shooting theater.

I noticed this with my Canon 5D years ago, too: if the source of light is very "hot" (e.g. it's a strong source of IR light), those black fabrics are a "magenta shade of black".

I fix that issue in Photoshop by using "Selective Color" and adjusting both the Magenta and Black colors.

 

[tomasis]

I fix that issue in Photoshop by using "Selective Color" and adjusting both the Magenta and Black colors.

Great tip! Thanks

 

[ZorkiKat]

Everyone says that the R-D1 does not have the same magenta color issues as the M8. Not so, in my experience. I recently started shooting alot of theater where black is the predominant color - clothing, curtains, etc. Attached is an example from a show I shot recently. Everyone was wearing a shade of black, not the ugly magenta clothes you see in the photo. The curtain in the left rear - pitch black, not purple. The only true colors here are skin, hair, the white chair to the left and the red curtain. I just ordered two IR filters from Tony Rose to address this problem. I will likely need more.

I thought Epson had used the stock Nikon D100 sensor in the R-D1. If so, why does it show a magenta cast?

/T

Actually, I started a thread about this more than a year ago ("The Colour Purple, by Epson")

http://rangefinderforum.com/forums/showthread.php?t=33828&highlight=purple

Enclosed sample / comparison images of the same subject shot with the Epson and a Canon DSLR.

As others have mentioned earlier, the "purples" appear under certain circumstances- type of fabric, the illumination used, and perhaps even the lens itself.

The purples in my case always appear with flash illumination, both with studio strobes and shoe mounted portables. Some types of fabric are also prone to go purple than others- namely the synthetics, or maybe the dye used to colour them black. The purpling in any case varies- from slight suggestions in the midtones to total changes in colour of the object- ie, black to bright brown.

Nikon may have a stronger IR-cut filter over their sensors, as most DSLR makers tend to do to avoid what they often label as 'false reds'. Or it could be the image processing engine used in the camera. A digital sensor has a high native sensitivity to IR, and often relieved by the use of strong IR-cut filters to shield the sensor. Epson may not have used a similar IR-cut filter over its sensor, hence the magenta casts. And there's a different engine within too. It's not really the sensor alone which determines how the image finally appears. It's more of how the camera processes it.


Jay

 

[LCT]

Everyone was wearing a shade of black, not the ugly magenta clothes you see in the photo. The curtain in the left rear - pitch black, not purple. The only true colors here are skin, hair, the white chair to the left and the red curtain...

I see magenta but also red cast in your pic if my laptop is not off here.
Look at the reddish shadows on the necks for instance.
Did you use AWB? Better use manual WB settings in the camera or the raw converter IMHO.
Otherwise your pic is not lost if you don't mind to darken the hair of your subjects.
2 clics in iCorrect on the chair and the curtain, green lightness -50, yellow lightness +20. FWIW.

 

[LCT]

...it's the Nikon D70 sensor in the Epson...

Are you sure? Always thought that it is the Sony ICX413AQ sensor of the Pentax *ist D and Nikon D100. The D70 has a Sony ICX453AK sensor according to Thom Hogan: http://www.bythom.com/d70review.htm