ok.
so, i'm waiting in line at the airport, about to go through security,
shoes off, no belt, and a lead bag full of film in my hands.
"could
you check this by hand please?"
suspicion
now floats over me, all the agents turn around to take a look at me.
"what
is it?"
"film"
i say
"ok.
you can put it through, the machine doesn't affect film."
"this
is high speed film." i lie.
"anything
under 800 iso is fine."
"well,
this is 4000."
"it's
written 400 on it. hp5 400."
"i
shot it at 4000 iso."
i
have no problem lying about film speed when it's a matter of
preservation. anyway, someone takes my lead bag, i go through the
x-ray, so do my cameras, while keeping an eye on my film bag. once,
an agent took 3 rolls out of my sight for a moment, and somehow these
very 3 rolls got fogged.
so
now i empty the rolls of film into a tray, and the hand inspection
begins. it's pretty quick actually. a swap for explosives and
another for drugs. i have to separate film from camera, much like
gun and bullets, because some people (no comments) do carry guns and
ammunition in planes... just take a look at the lunacy on tsa
instagram.
"you're
clear!" i'm told.
i
put the film back in the lead bag, on on i go.
but,
before i go, the security guy who inspected my film says:
"it
doesn't even affect film, you know, you really don't have to do
that."
"well,
actually, it does."
"you
know, i've been an x-ray specialist for 15 years, trust me, it
doesn't do anything to film..."
so
i pulled rank on him.
"i've
been a photo lab technician for 25 years, trust me, it does. it fogs
it. it leaves a continuous hyperbola throughout the length of the
roll."
he
turns around and mutters "impossible."
quick
reminder: this is taking place at an airport security check point,
i'm not there to win an argument, i just want to get on the plane, or
home.
"i
just want to be safe."
honestly,
i don't know how one trains for the effects of x-rays on silver
halides, but if i was testing, i would put a roll through, develop
it, look at it and say: "oh yes, x-rays fog film."
now,
what i'd like to know is, who came up with x-rays being safe for film
800 iso and less? it makes absolutely no sense, it's completely
arbitrary. everyone knows high energy photons, with a wavelength
similar to atoms, and emitted by electrons, will photoabsorb the
radiated -bluish if we could see it- light. x-rays have a much
shorter wavelength than visible light, therefore the silver crystals
trapped in gelatin are bombarded intermittently by waves much shorter
they are used to. i'm not making this up, here's a quote from kodak:
" the orientation of the fog stripe depends on the orientation
of the film relative to the x-ray beam. the banding may be linear or
wavy and can run lengthwise or horizontally on the film. it can also
undulate, depending on the combination of the angle of exposure and
the multiple laps of film on the roll." i shoot 120 film, so the
stripe runs as a very tight wave, almost vertical across the width.
35 mm film will run a much longer wave along the length of the roll.
i'm
not trying to change, or even improve, the situation, i just want to
travel and shoot film. so i smile and i move on. i don't care what
the customs agent thinks anymore. the good part is that in the last
3 years or so, i've had no problem having my film inspected by hand.
but, what if you do get your film x-rayed and you want to print it?
fogged
film is bullet-proof -thick- meaning pretty much all halides on every
layer of the emulsion have been darkened. there is no toe region on
this sensitometric curve. flatness blurs the line between shadows
and highlights. plus, when that happens, the grain structure become
more apparent. you got yourself a flat piece of film, you compensate
by adding contrast, which gives you more grain. not good in most
situations. in this case, split filtration comes in handy. first
you expose the grays, the general patterns of the image, diffusing
clumps of grains for a smoother feel, and then, zap, just an accent
of pure black to define the said patterns. i close down the f-stop
for the high contrast and open up for the low, obviously, every
little bit helps. a 90/10 ratio, perhaps 80 % low, 20 high, it
varies with every image.
my
point is you can't just casually print x-ray fogged film. once i was
so frustrated with the whole experience i told them to throw away my
film if they must x-ray it, because i wouldn't be able to use it
anyway. yaddi yaddi yadda, we agreed to disagree, and somehow, since
that day, no problem to hand check photographic film. they do
fingerprint me every time though...
now,
in the chance you like your film as it gets through airport x-ray
scanners, i can help you replicate that look without the hassle of
going through customs at an airport. i 'discovered' that trick in an
unfortunate event; you simply leave your film in the developer after
regular development, as if you forgot it somehow, retrieve it a few
hours later and continue through the fix. i only did this once, but
i'll never forget the look of it.
ps:
no, it wasn't my film.