Very Unusual Parabola on my Film!
I just got back from a trip to San Francisco and I was very surprised with what came back from the lab. At first I thought these were light-leaks, but when I finally saw the negatives, I realized that there were perfect parabolae imprinted on two rolls of my film. I can see them from the first two frames I advanced, and then vaguely (or not so vaguely as the links to the images will show) throughout the roll. At first I thought it might be scanning, but these weird parabolae are perfectly continuous.
- I was using different lenses, so I know that's not it.
- Meter is working fine (Zeiss Ikon).
- Pressure plate is straight
- Both were ISO 400 - the shots below are TMAX 400 pushed two EV. The other roll was Legacy Pro 400 (shot at box speed). The parabolae are on different parts of the film. The ones below go right through the middle, the ones I am not posting are close to the top.
- They went through carry-on X-ray scanners twice (there and back). I know this is the easiest explanation, but seems hard to believe.
Granted these aren't keepers, but I find it really irritating that I don't know what is causing this to happen. My ISO 100 shots are fine.
Odd effect - my only question is: Were you, and the light house, very near a black hole? lol
"There is no such thing as objective reality in a photograph"
and (gasp!) dpug photos
- take a look if you like.
Well, they say there are ghosts on Alcatraz, but the Legacy Pro roll was shot on the mainland with the same effect.
Originally Posted by nhemann
Out of focus hair somewhere in the camera?
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I don't think so - it's a perfect wavelength, even on the advance frames (I take two shots at 1/2000 with the lens cap on to advance to "1" on the counter). It's something technological that's causing this. A hair would be too random.
Originally Posted by keithwms
That was my first thought - but I though X-Rays will just fog whole regions of the film, not narrow bandwidths?
Originally Posted by AgX
These sine wave patterns are most probably from X-ray. Somewhere on the Kodak site there are illustration pictures.
Carried on - twice.
Originally Posted by Sirius Glass
The signs say 800 ISO film is fine but 400 pushed to 1600 probably qualifies. Obviously you should have asked for hand inspection of your film. Sorry about your luck.
Originally Posted by corposant