Error in development
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raytoei@gmail.com
Veteran
hi Craig,
at first it looked like multiple exposures.
but since you mentioned that it affects multiple rolls,
i think perhaps you should eliminate another variable,
which is your camera. do you have a color c-41 film
which you can test with the same camera ? since you
are located in singapore, konota photos@peninsula does c-41 dev
in 30 mins.
i presume you have developed film previously and that your
spooling film method is consistent ?
raytoei
singapore
at first it looked like multiple exposures.
but since you mentioned that it affects multiple rolls,
i think perhaps you should eliminate another variable,
which is your camera. do you have a color c-41 film
which you can test with the same camera ? since you
are located in singapore, konota photos@peninsula does c-41 dev
in 30 mins.
i presume you have developed film previously and that your
spooling film method is consistent ?
raytoei
singapore
Photo_Smith
Well-known
Hi Craig
Doesn't look like a processing fault to me. It looks like you have some pre exposed image on the film. If you look at the centre of the frame there is a black line on both images, processing inconsistencies are rarely that consistent.
As they are over the sprockets I could guess that it could be X Rays or some other type of fogging.
You could if you still have some 'unexposed film' try to develop that before you put it in the camera-see if the marks are present if so you can rule out internal reflections in the camera.
Can you snap the negs with a smartphone? It might help me diagnose, but at the moment double exposure looks the most likely cause.
Doesn't look like a processing fault to me. It looks like you have some pre exposed image on the film. If you look at the centre of the frame there is a black line on both images, processing inconsistencies are rarely that consistent.
As they are over the sprockets I could guess that it could be X Rays or some other type of fogging.
You could if you still have some 'unexposed film' try to develop that before you put it in the camera-see if the marks are present if so you can rule out internal reflections in the camera.
Can you snap the negs with a smartphone? It might help me diagnose, but at the moment double exposure looks the most likely cause.
craygc
Well-known
Thanx Ray,
I always use Konata for C41 and printing 🙂 I can try a roll of C41 through the camera but I'm just at a loss to what is happening. As for spooling the film, I was very conscious of it this time as I got a similar issue on a previous roll - hmmm, that was a different camera too! Basically, once the film was fully on the spool it would keep going with a very light touch so Im assuming it was on correctly. The only other constant across all these rolls are that they've been frozen for a number of years but the problem is not consistent and nothing I can think of can explain what appears as a distinct pattern on the film, and not even across an entier frame...
craygc
Well-known
Attached is a shot of the neg strip on the lightbox. Given the resizing that goes on I have cropped a section of the sprocket area.
Attachments
Photo_Smith
Well-known
Craig that is unusual, it could be to do with freezing the films or any number of issues.
Why not send a frame or two to Ilford and see what they say?
HARMAN technology Limited,
Ilford Way,
Mobberley,
Knutsford,
CHESHIRE.
WA16 7JL
UNITED KINGDOM. Mark it for the attention of TECHNICAL SERVICE.
Make sure you tell them how the film was stored and where you got it from. Is it bulk film? if so that may explain why the marks are spaced out more especially if the film is from the outside of the roll.
If it is bulk spool a 12 exp roll and then look at the emulsion in the light, you may see the marks-in which case storage is the main suspect.
I would still process a short end from a film I hadn't put in the camera; we could be looking at a storage issue. Those V shaped marks between the sprockets and the way they look at the sprocket edges would make me suspect the freeze/thaw cycle.
Hope it works out, I wouldn't use that film for any critical work.
Why not send a frame or two to Ilford and see what they say?
HARMAN technology Limited,
Ilford Way,
Mobberley,
Knutsford,
CHESHIRE.
WA16 7JL
UNITED KINGDOM. Mark it for the attention of TECHNICAL SERVICE.
Make sure you tell them how the film was stored and where you got it from. Is it bulk film? if so that may explain why the marks are spaced out more especially if the film is from the outside of the roll.
If it is bulk spool a 12 exp roll and then look at the emulsion in the light, you may see the marks-in which case storage is the main suspect.
I would still process a short end from a film I hadn't put in the camera; we could be looking at a storage issue. Those V shaped marks between the sprockets and the way they look at the sprocket edges would make me suspect the freeze/thaw cycle.
Hope it works out, I wouldn't use that film for any critical work.
Ming Rider
Film, the next evolution.
It looks like an imprint of a shutter curtain?
AlexisNeel
http://alexisneel.com/
That is certainly not a development issue. It looks like gauze actually. The fact that the pattern itself is pretty uniform but not rigid like a window screen does not indicate to me that it would be your shutter screen. The spacing pattern between them is not consistent either as to lead to anything mechanical, and that the pattern extends into the rebate edge, and all the way outer edge of that, is very unusual. The way it bleeds completely into the sprocket holes on 13A but halo's around them in 14A is highly unusual as is the pattern around he sprocket holes, which swoops on 13 but not on 14. The "droop" of the pattern, when looking at the strip vertically, and on the right hand side is close but (as best as I could do) I did not see it as an exact match. I do not see this as storage either, and initial thought is manufacturing error, but of course that would be shot out of the water if you get the same on color film and would lead back to something in the camera, though I'd still be hard pressed as to figure out exactly what.
The idea of sending to Ilford is a good one, along with shooting a few color rolls.
Good luck and post what you find out.
The idea of sending to Ilford is a good one, along with shooting a few color rolls.
Good luck and post what you find out.
sdotkling
Sent through the ether
I'm going with X-ray exposure, film stored in or near a fabric as it passed through a anti-terrorist scanner. Wild guess. Good puzzle, though.
AlexisNeel
http://alexisneel.com/
That's a good possibility...
craygc
Well-known
I have gone completely off an x-ray theory more from a more magnified view of the negs [below]. The well structured and parallel longitudinal lines versus the more fluid lateral lines and how they interact with the sprocket holes show no resemblance of x-ray damage.
The discussion has travelled a little further over at APUG. Currently the best view of what happened is "triboluminescence" which was corroborated by Simon Gallery from Ilford. On another line of investigation I have been in direct contact with Ilford who requested I sent them the negatives. They were posted off today so now its a bit of a wait to see what comes back
