avatar

I'd say Yakim pretty much summarized it. If nothing else the IS cinches the deal.

35mm is a lot of film with very little air in a small sealed container (hopefully you stor it in its cannister)

4x5 does not have happy little sealing cannisters

What?

What about ziploc in the fridge?

If you loaded some 4x5 holders and then you dont see yourself using

them for a few months... do you shove the holders in the freezer or

what? or is that bad for the plastic? or potentially corossive for

the metal? or bad for the film since its not sealed? should you use a

freezer ziplock bag?

I forgot I left the holders in there. How would I go about compensating if a test came out bad?

TMAX 100 sheet film loaded 8 months ago... stored in a car trunk (so

during the day for around 2 or 3 months it probably got somewhat

warm. Stored at room temp the rest of the time. I shot one month

ago... should any adjustment be made to developing? Or does it not

make a difference? Or will I have no problems? Or is my film likely

ruined?

-------- Original Message --------

Subject: Re: Black and White Films (KMM2527719C0KM)

Date: Wed, 11 Sep 2002 10:41:26 -0400

From: Kodak US <ProfessionalUS@cyber.kodak.com>

Reply-To: Kodak US <ProfessionalUS@cyber.kodak.com>

To: Parmet <parmet@umr.edu>

 

Parmet,

 

Yes, in fact the film is stored in salt mines to combat gamma radiation.

 

Thank you for visiting the Kodak web site

 

http://www.kodak.com/go/professional

 

If you should have any questions on Kodak products or services, please

be sure to revisit our site as we are continually adding information to

enhance our support. If you need further assistance you may also reach

us at 1-800-242-2424 ext. 19 (Monday-Friday, 9am-7pm EST)

 

 

Regards,

 

Peter V.

Kodak Information and Technical Support

Kodak Professional

 

Original message follows:

-------------------------

 

Question: Is there any truth to the rumors that Kodak

produces and/or stores their 3200 and/or 1600

emulsoins in underground facilities to increase

shelf life by reducing fogging from backround

radiation (specifically cosmic ray) exposure

during manufacturing/storage?

 

Category: Professional

Subcategory: Black and White Films

Referer:

readableSubject: Black and White Films

Know any more detail about the underground storage of TMZ? I am a nuclear engineering major so I'm giggling about some of your false conclusions on radiation. Let's be clear, when refering to cosmic rays usually you are talking about super high energy protons and their secondaries (although it also includes other particle radiation and ionizing photonic radiation). High energy charged particles of extraterrestrial origin (comsic rays) are for the most part easily stopped by enough solid object (though some of their secondaries are not if you get secondary gamma or neutron emissions). Why do you think they put accelerators and neutrino detectors underground? To filter out charged particle bombardment. Even air greatly reduces it. Thats why air crews are subject to increased radiation doses. Most of the increase is not X-ray or gamma, which dont change much with altitude nearly as much as cosmic rays. Protons are heavy charged particles and are not highly penetrating. They do NOT go from one side of the earth to the other. Even a neutron doesnt do that (uncharged particle radiation). Neutrino's do (but then they have virtually no mass). Now if you push your film, its going to be more succeptible to smaller exposures whether from light or radiation. The true film speed is irrelevant. It's what you treat it as that mattters. So it matters that its at 3200.

Anyone know if there is any truth to the rumors that Kodak and/or

Ilford produce and/or store their 3200 and/or 1600 emulsioins in

underground facilities to increase shelf life by reducing fogging

from backround radiation (specifically cosmic ray) exposure during

manufacturing/storage?

I developed 5 rolls of B&W together... 3 TMX (TMax 100 ) and 2 TX

(Tri-X 400) (not their brand new emulsions) in a Jobo (rotary drum)

with D76 for 6min at 21C (70F) because the charts showed that they

both had the same development time at that temp. They look like they

turned out just fine. So do you think there was a problem? Is it a

bad idea to be developing the TX with the TMX together even though

their development times were the same for that method at that temp

in that developer? If so, why?

Well I think I'll buy the $40 cheapo adaptor... that way I'll at least save $10! Then I'll hack it apart and solder on a 3.5mm stereo connector!

Well the ultimate solution to my 4 connectors may be to buy a $40 N3-T3 connector adaptor and hack it apart and insert my own standard 3.5mm stereo connector then build all my accessories to fit the 3.5mm connector. I'm not about to take apart my EOS-3 and buying an actual remote defeats the purpose of this project. Anyone out there with a RS-80N3 and a continuity tester who would care to take 5 minutes to figure out the pinouts? PLEASE?

But buying Canon's parts defeats the point, that is to save money!!!!

I've looked around photo.net and THE net and I couldn't find a post on

this subject. Does anyone know the pinouts (what each pin does) for

the remote release socket of the EOS 3 / 1v? Does the metal screw

socket serve as a fourth conductor or a ground or is it not used

electronically? Does anyone know where I can buy just the connectors

for the remote socket (male or female)? I don't want to pay Canon's

extortionist price of $50 for a piece of crappy plastic that happens

to have a fancy proprietary connector that plugs into the cable

release socket on my EOS 3. So........... I'm gonna make my own piece

of crappy plastic for $5 either by buying a connector or by making a

converter... and then I'm gonna make a 40 foot cable release extension

for $3 instead of paying Canon $80... and when I get time I'm gonna

design a timer/intervolometer for $20 instead of paying Canon $120...

and then when I have time I'm gonna design a IR release for $40

instead of paying Canon $400! At some point in there I'm going to

document all my work, scan my electronic schematics, and put all the

information you would need to build your own super cheap releases,

extensions, and remotes, all on my <a

href="http://home.kc.rr.com/aaronphoto/">webpage</a>. Help me out

here! Nobody should have to pay the unreasonable prices that Canon

charges for these cheap accessories. I yearn for my old Elan IIe that

had simple $20 releases and IR remote... ironically it was much easier

to hack your own because it used a simple 3 conductor stereo headphone

jack.

Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations 49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine: Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

As to the gentleman who wondered why 35mm would set off the metal detector but not his fillings... I believe 35mm containers are made of a ferrous material whereas his mercury filling are not magnetic at all.

Just because the film will recieve a dose of cosmic rays at altitude doesn't mean it's a great idea to nuke it some more on the ground ;)

The emulsion will stop some X-rays because of its silver content. <p> Try to avoid the X-rays period! Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations 49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine: Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

I would think that the actual emulsions would have equal sensitivity to X-rays. However, roll film, at least 35mm roll film, is in a metal container and that might attenuate some of the X-rays. However, that same metal container might cause secondary emissions of beta particles induced by the X-ray bombardment. I'd have to check my text books on that one.... might even require tests... anyone wanna buy me an X-ray machine so I can test? Those CTX-5000 machines only cost about one million dollars!!!! I'll nuke my Tech IV with it to see what it looks like!

You can demand hand inspections in the USA. Outside the USA and its posessions, you may be SoL. My page has a link to someones experiences at various European airports. Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations (49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations (49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

You can demand hand inspections in the USA. Outside the USA and its posessions, you may be SoL. My page has a link to someones experiences at various European airports. Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations (49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations (49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations (49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>

Under the Code of Federal Regulations, film doesn't have to be x-rayed in US airports (except maybe film backs)! It does not matter what speed it is. It can all be hand checked if you like. Print out the regulations (49CFR1544.211(e)(4) to show the screeners! There is too much information on my page to put here. Here is how to avoid the X-ray machine Check my page on it! Here is your definate answer to x-raying in airports. There are links to all the relevant regulations for printing along with an explanation of the federal structure and tips to make things go easier: <a href="http://home.kc.rr.com/aaronphoto/xray.html">http://home.kc.rr.com/aaronphoto/xray.html</a>