What could this issue be?

pamphoto · Sunday at 5:04 PM

I recently developed a roll of Ferraina Orto 120 film taken with my Hasselblad EL. It looks like the light from one negative streaked out and over onto the next one. Could this be an issue with the film, the camera's shutter or motor, Film back, or all of the above? I asked a friend and he thinks it could be the motor. This is the first roll it's done this on and I think only the second or third roll I have shot with the camera. I have two more rolls to develop once I get more chemicals. It wasn't every frame, and these were the worst of them.

OAPOli · Sunday at 5:21 PM

To me it looks like the film started advancing while the shutter was still open. Where those longish exposures? What length? If I remember right you have to keep the shutter release button depressed for the entire duration of the exposure: as soon as you release it the motor will cycle (I think).

AnselMortensen · Sunday at 5:22 PM

The streaks are from the film being advanced during the exposure.
Most likely the leaf shutter and the barn doors are sticking open while the film is advancing.

pamphoto · Sunday at 6:53 PM

OAPOli said:
To me it looks like the film started advancing while the shutter was still open. Where those longish exposures? What length? If I remember right you have to keep the shutter release button depressed for the entire duration of the exposure: as soon as you release it the motor will cycle (I think).

I believe they were longer exposures. I didn't write it down because it was hot and humid out. The film speed was 50.

pamphoto · Sunday at 6:56 PM

AnselMortensen said:
The streaks are from the film being advanced during the exposure.
Most likely the leaf shutter and the barn doors are sticking open while the film is advancing.

Could it be the motor drive then? I did take it out just now to finish a roll of 800 Portra. It was slow to advance to the next frame. I was told the battery was charged and should not need it for a long while. I have not had this camera very long and have not run many rolls of film through it.

F4U · Sunday at 7:30 PM

An old unknown unserviced Hasselblad can be prone for trouble. I say this as one who was never a trained tech. Just somebody who has worked on quite a number of them. First read the manual to be sure the button must be held down for long exposures. I cant' remember on that point. "the battery was changed", With what? Maybe some ebay Chinese battery,? (which would be worthless). I had the best luck soldering up my own battery packs with Eneloop AAA rechargables. Or even better, a known good quality NiCd, which the charger was made for. you may not have just one question. There may be more issues needing address. as for batteries, ! am not at all a fan of the popular 9V conversion gadgets. Too much voltage and very little actual capacity.

OAPOli · Sunday at 8:02 PM

See above. My guess is that you released the button early. Shutter was still open but the film started to advance while the auxiliary shutter was closing. Test it at 1s with no film to confirm.

Edit. I mean test it without the back to confirm.

F4U · Sunday at 8:31 PM

OAPOli said:
View attachment 406993

See above. My guess is that you released the button early. Shutter was still open but the film started to advance while the auxiliary shutter was closing. Test it at 1s with no film to confirm.

Edit. I mean test it without the back to confirm.

There you go. Good catch , OAP

pamphoto · Sunday at 9:22 PM

OAPOli said:
View attachment 406993

See above. My guess is that you released the button early. Shutter was still open but the film started to advance while the auxiliary shutter was closing. Test it at 1s with no film to confirm.

Edit. I mean test it without the back to confirm.

Thank you. Wil do. Would using a shutter release cable work as well?

Edit: Nevermind, I just found the manual. Thanks again.

mshchem · Sunday at 9:52 PM

I remember this was "different" than other cameras I had used. Especially for the times as short as 1/15 s. Unlike something like a Bronica SQ or a Mamiya RZ (electronic vs mechanical).

alentine · 2025-09-08T04:29:40-0400

OAPOli said:
To me it looks like the film started advancing while the shutter was still open. Where those longish exposures? What length? If I remember right you have to keep the shutter release button depressed for the entire duration of the exposure: as soon as you release it the motor will cycle (I think).

Yes.
Each frame shares exposure from the previous(or next) frame while winder is advancing film/ double exposure.
Its more clear if you read frames at the top of each other.
Please see photo attached. BTW, I'm not a photoshop guy.

Don_ih · 2025-09-08T05:15:22-0400

Releasing the button allows the motor to start the winding mechanism. It more or less simultaneously closes the rear shutter, lowers the mirror, advances the film, and winds the lens shutter. If your shutter is still open when you release the button, it's still exposing film while all of that happens, and will smear the top of one image into the bottom of the next. The shutter may be open because it was set for a long exposure. Or the shutter may be open because the lens shutter is not accurate and might be staying open too long.

What could this issue be?

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