Nikon D1x with green filter?

[John Geerts]

I acquired a nice Nikon D1x.  It's output gives however surprising results.
Here are some examples shot with the Nikkor AF-D 50/1.4

The last one was processed in B&W, apparantly that works pretty good.

Does anyone have an idea why this camera contains somehow a  green filter?

[Fons Baerken]

Must be a way to correct the colour array, i wonder?

[John Geerts]

Must be a way to correct the colour array, i wonder?

I tried the Channel mixer  but ended up in B&W

Not Adapted in Camera RAW - Standard Profile used.

[Birna Rørslett]

Have you tried to run the D1X NEFs through NX Studio?

[John Geerts]

Have you tried to run the D1X NEFs through NX Studio?

Not yet. Used ACR and Photoshop

[Akira]

My wild guess is that the data on the red channel is lost or very weak.

Have you checked the RGB histogram in ACR?

Nevertheless, I kind of like this pleasant green tone.

[John Geerts]

Thanks Akira.  I like the images too.

ACR shows that all colours are recorded. Presumable a green filter has been inserted inside the camera for the use of Black-and-White photography.

For recording the correct exposure two stops are required which also assumes a green filter must be in place:

"When photographing foliage in black and white, a green filter is used almost exclusively."

"It lightens green foliage, which is particularly important with dark green leaves which can record very dark without a filter. It therefore gives a more natural, lighter feel to the photograph."

"Although limited in application, it can be the perfect solution for many photographs. A typical green filter has a filter factor of 2 (the manufacturer will supply the exact factor with the filter) while most cameras with TTL metering will be able to correct automatically for the filter factor."  according to Ilfordphoto.  https://www.ilfordphoto.com/colour-filters/?___store=ilford_brochure&___from_store=ilford_uk

The rubber of the camera show some signs of being removed at the spots for opening the camera.  Life Pixel published a tutorial on the Net:  https://www.lifepixel.com/tutorials/infrared-diy-tutorials/nikon-d1x

[John Geerts]

A portrait in the green recording and one transferred to B&W

In a Leica forum:  "When large format B&W film was the dominant media for portraiture, green filters were often used because they worked well with caucasian skin. The shift to smaller formats, the rise of digital photography and a more diverse population sitting for portraits left the green filter on the shelf. As sales declined, fewer manufactures offered them. Leica still offers them and Tiffen has them in limited sizes. ".    https://www.l-camera-forum.com/topic/380568-green-filters-not-popular/

"Green film is always useful for portraits. Always. Darkens lips, gives a proper impact to the eyes. There's nothing worst than very light lips, makes people look sick to death."

"Green filter is a very well kept secret."

[Birna Rørslett]

Does the camera focus correctly to infinity?

[Akira]

Thanks Akira.  I like the images too.

ACR shows that all colours are recorded. Presumable a green filter has been inserted inside the camera for the use of Black-and-White photography.

For recording the correct exposure two stops are required which also assumes a green filter must be in place:

"When photographing foliage in black and white, a green filter is used almost exclusively."

"It lightens green foliage, which is particularly important with dark green leaves which can record very dark without a filter. It therefore gives a more natural, lighter feel to the photograph."

"Although limited in application, it can be the perfect solution for many photographs. A typical green filter has a filter factor of 2 (the manufacturer will supply the exact factor with the filter) while most cameras with TTL metering will be able to correct automatically for the filter factor."  according to Ilfordphoto.  https://www.ilfordphoto.com/colour-filters/?___store=ilford_brochure&___from_store=ilford_uk

The rubber of the camera show some signs of being removed at the spots for opening the camera.  Life Pixel published a tutorial on the Net:  https://www.lifepixel.com/tutorials/infrared-diy-tutorials/nikon-d1x

Hmm...  Now I wonder how much D1X suffered from the IR contamination?  The green filter may be added to suppress IR that might affect the overall rendition of the B&W image.

[John Geerts]

Does the camera focus correctly to infinity?

Yes it does.

Just took an image, but now more colours are introduced

I just noticed, I changed the white balance to PRE.

[John Geerts]

Now with the White Balance set to AUTO

[Erik Lund]

Looks strange,,, Please try resetting the camera settings: Hold down the function button and the checkard board button for 2 seconds it resets back to factory default!

[Akira]

Now with the White Balance set to AUTO

Apparently, the red signals are rendered correctly...

[John Geerts]

Looks strange,,, Please try resetting the camera settings: Hold down the function button and the checkard board button for 2 seconds it resets back to factory default!

Thanks for the tip. No result. Still the same green filter output