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

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Originally Posted by Randy Moe

Yes but I can't 'read' binary.

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I could teach you in 5 minutes.

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Originally Posted by seezee

I could teach you in 5 minutes.

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I know binary and any base code is easy, but I don't use it.

Fingers and toes, while I got em!

The original 'metric'. Pun intended!

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Originally Posted by seezee

I could teach you in 5 minutes.

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Quote:

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Originally Posted by Randy Moe

I know binary and any base code is easy, but I don't use it.

Fingers and toes, while I got em!

The original 'metric'. Pun intended!

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I dunno, I was taught binary in grade school computer class and could never really "get it".

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Originally Posted by StoneNYC

I dunno, I was taught binary in grade school computer class and could never really "get it".

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The best way to comprehend binary is to also know numbering can be Base 2, 3, ...to Base 10 which we all use and beyond which they use on Mars.

Binary is best for electronic computers as it is on or off, black or white, dead or alive. Try Base 7 to mess with people!

But then everybody does upside down mirror writing, don't they?

000 001 010 011 100 101 111 etc.

Pretty easy? But I don't think I'd try to mark film holders as such...

I thnk it is time for the thread to get back on topic "X-ray film example and comparison."

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Originally Posted by Jim Noel

I thnk it is time for the thread to get back on topic "X-ray film example and comparison."

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Really..... how to mark holders is important but in another thread please. More images will be better. Here is one from the church interior I shot a while ago. Developed in Pyrocat HD.

End of summer, 2015.

The sun was setting as I was setting up for a seascape.
The people on the right were still in the dimming sunlight, while the ones on the left were already in the shade of the hill behind us.

Speed Graphic 4x5, with Optar 135mm.
Agfa x-ray film (CP G+) at 100asa.
Developed in Ilford MG 1+40 at 20C for 4min, Jobo.

Scan from contact print on Ilford MG Warmtone RC Pearl.

https://farm1.staticflickr.com/660/2...3d80d335_b.jpg

Wow!!!

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Originally Posted by thodoris tzalavras

end of summer, 2015.

The sun was setting as i was setting up for a seascape.
The people on the right were still in the dimming sunlight, while the ones on the left were already in the shade of the hill behind us.

Speed graphic 4x5, with optar 135mm.
Agfa x-ray film (cp g+) at 100asa.
Developed in ilford mg 1+40 at 20c for 4min, jobo.

Scan from contact print on ilford mg warmtone rc pearl.

https://farm1.staticflickr.com/660/2...3d80d335_b.jpg

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Originally Posted by ndg

Funny you ask. Shortly after those test shots, I drove down to this creek. I wanted to capture the stream over the rocks on 14x20 Xray film for carbon. The foliage did not leave a lot of light through. I metered the scene at iso 400 and got absolutely no usable images! In bright sunlight, iso 400 give usable images. However, in low light situations, the iso drops into the 25 - 50 range. Again, that is my experience with my workflow and the experience of others may be different.

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I know this is an old post, but I'll hazard a guess that the foliage was filtering a disproportionate amount of blue light. In other words, daylight vs. shadow color temperature shift.