Would a magenta filter work for increasing contrast...

[LabRat]

I photographed a light rail train at night, and a 30 magenta did an excellent job of filtering the green in the on-board fluorescent lights. It also "magentized" the street lighting. But to my thinking, it was different, but not a negative in the photograph.

Another interesting filter for night color is the filter sold for 35mm cameras, the Hoya Color Intensifier... There's two different shades (I don't remember which, but one peaks magenta, cuts green, and deep blues light polluted night skies)... I also use these for astronomy large eyepiece WA viewing to cut light pollution...

I think these might still be available, but were targeted to the amateur market with the common thread sizes and diameters...

Steve K

[Steven Ruttenberg]

There are filters that block sodium light for astronomy that I am going to try in the future for night time photography and see how that works.

[Steven Ruttenberg]

Post a few and let us see what you find out.

I will give it a try. Need to get a magenta filter first, shouldn't be terribly difficult to get a good used one.

[Bob Salomon]

I will give it a try. Need to get a magenta filter first, shouldn't be terribly difficult to get a good used one.

It is for an optical quality one!

[Steven Ruttenberg]

I used them in the past with film when I was shooting 35mm in doors under fluorescent lighting. Worked great, don't remember any issues, but that was almost 20 years ago. Don't remember paying much for it.

[Bob Salomon]

I used them in the past with film when I was shooting 35mm in doors under fluorescent lighting. Worked great, don't remember any issues, but that was almost 20 years ago. Don't remember paying much for it.

They were a combination of red and blue, how much depended on the manufacturer of the filter you used and the type of tubes used in the room. That particular combination will be very hard to duplicate and, if shooting outdoors, the K temp will be different.

[Drew Wiley]

I have a selection of deep magenta and violet Wratten filters for specialized mask exposure applications in the lab. I have no use for them in the field, and they're too expensive and fragile for that kind of usage anyway. I've sometimes used mild CC magenta filters in indoor architectural shoots, per color temp meter specifications.

[Steven Ruttenberg]

I will get a filter, then post up. Then from there I will experiment and post up as I do.

[LabRat]

There are filters that block sodium light for astronomy that I am going to try in the future for night time photography and see how that works.

Those filters are very expensive and usually small diameters, and would turn the moon cyan if you looked at it through a telescope...

The Hoya I mentioned is a dichroic filter not really different from them, but at a much lower cost... So worth a try...

They balance night color surprisingly well, but some stuff turns cyan or other colors...

Steve K

[Steven Ruttenberg]

I have had terrible results with red filters where veins were shown that the eye cannot see, and does not want to see.

Sounds unsettling. Green mafe facial blemishes stick out like a sore thumb.