Use of X-ray film: technical discussion with example images

[Tin Can]

Blue skies

Why cyan an not green?

[Eugen Mezei]

But you cut the blue away with the yellow filter you put on the taking lens.

Btw, where can one buy cyan filters?

[Tin Can]

Show and tell please
I don’t use filters

But you cut the blue away with the yellow filter you put on the taking lens.

Btw, where can one buy cyan filters?

[Tin Can]

Eugen

Do you only do research?

I just reviewed your posts to 2013

Your language seems to be american english

I see you bought some x-Ray a while back

Did you try it?

But you cut the blue away with the yellow filter you put on the taking lens.

Btw, where can one buy cyan filters?

[Michael R]

The idea behind using a cyan filter on the meter would be to make the meter “see” more like the film does. Loosely speaking, an orthochromatic film can’t see red light, so if the meter can’t see red light either, it might give more useful exposure readings for the film. It’s not going to work perfectly but anyway. A cyan filter such as the Wratten 44A (“minus red”) would be one to try. This assumes no filter on the taking lens.

If you use a yellow filter on the taking lens, to attenuate blue, you’re effectively using mostly green light to expose the film, in which case a green filter on the meter would better approximate how the film sees.

These will only be approximate adjustments due to the inherent differences in spectral sensitivities of the meter and film. Obviously the specific filter used on the taking lens will affect this.

[Tin Can]

Well done Michael R

Eugen, ask him questions

Thank you both

[Eugen Mezei]

Michael, that is exactly what I meant. Thank you for explaining it better. Also thanks for mentioning the minus red filter, I will look out for one.

Tin Can: Nope, my English is not american. It is just bad. Where are you from? I bought a lot of X-ray from German Ebay.

[Tin Can]

I am from the middle of USA, Chicago

Moved often since child

I bought only from https://www.zzmedical.com/x-ray-acce...-ray-film.html

I experiment more than some members like

rules are to be broken

[Andrew O'Neill]

If you want slightly darker blue sky, or better separation between cloud and sky, with green latitude x-ray film, use a yellow filter. The strongest I have used is a #15.

[Daniel Unkefer]

Ashton Pond Norma Handy HRU Mic-X by Nokton48, on Flickr

Ashton Pond Norma Handy HRU Mic-X 2 by Nokton48, on Flickr


Sinar Norma 4x5 Custom Made HANDY 4x5 XRAY HRU 1 sec F22 Sinar Norma Medium Yellow 108mm Glass Disk. Camera mounted on Star-D tripod. Legacy Mic-X Replenished Straight in Cesco flat bottomed tray under red safelight. Omega DII 180mm black Rodagon laser aligned. Arista RC #2 Multigrade dev

The yellow filter darkened the sky slightly. I prefer this