Chamonix 45N-1 Testing Procedure

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Originally Posted by Jeremy Moore

Based on this thread I'm going to be doing an actual test with film and a Chamonix 45N-1 camera this evening.

I will make 4 photographs. 2 with a 90mm lens and 2 with a 135mm lens.

The camera will be firmly mounted to a Majestic Tripod with 6" bed indoors and focused on a fixed subject 10-15 feet away.

I will make 1 photograph to the best of my ability with a 90mm f/5.6 Super Angulon at f/5.6. I will then remove the fresnel, refocus my camera if need be due to the fresnel being removed, and make another photograph at f/5.6.

I will then repeat this process using a 135mm f/5.6 Symmar-S.

I will light these photographs with flash and use a shutter speed of at least 1/125th of a second to avoid motion blur. I will shoot Ilford FP4+ and develop it in Pyrocat HD using a 2-bath development in a Jobo 3010 with 6 other sheets I need to develop. I will scan the resultant images and post them back to this thread.

Anyone that may have an issue with how this test is conducted and nitpick it later are given the opportunity--RIGHT NOW--to make suggestions on the testing procedure.

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Jeremy, did you ever find time for the tests?

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Originally Posted by kev curry

Jeremy, did you ever find time for the tests?

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Kev, had a concussion that has me all thrown off right now. I do have 2 Chamonix cameras sitting at my desk right now so if my headache is manageable this evening I'll do the testing tonight.

Jeremy,

Feel better. Take care of that brain of yours.

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Originally Posted by David Karp

Jeremy,

Feel better. Take care of that brain of yours.

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Jeremy,

Dr. Steve recommends you stop reading the Chamonix threads and your headache will be much better. :D

Cheers, Steve

Quote:

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Originally Posted by Jeremy Moore

Kev, had a concussion that has me all thrown off right now. I do have 2 Chamonix cameras sitting at my desk right now so if my headache is manageable this evening I'll do the testing tonight.

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Sh*t sorry to hear that Jeremy....hope its mild? Sod the tests, give your brain some time out:)

Eazy does it!

If you haven't done your test yet, a stepped target is a pretty good way to compare states of focus within one piece of film. I created one for my article on ground glass alignment back in 1996 using some foamcore and 5 sequential un-circulated dollar bills. With each bill offset by an inch from the next, you can focus on the center bill and observe the relative sharpness of the bill in front and behind. The one behind will be the next sharpest part of the target with the bill in front being the third sharpest. After development of the film, you can compare the resulting negative with the original if you leave the camera set up. I will be happy to email my article to you with photos of the set up.

jeremy, how are you doing?
has the test not happened yet because of further complications with your concussion?
you got us worried!