Do dark negatives equal over exposure?

[stradibarrius]

I recently shot two rolls of 120 Ektar 100 and all but two of the negatives are just dark with nothing there.
Does that mean that I just blew them out with too much light?

 

[SuzanneR]

Do the rest of the frames appear to be ok? Then, yes, probably way overexposed.

 

[railwayman3]

I would have thought that, even with considerable overexposure, there would still be some sort of image visible. Can you recall if there was anything unusual about the exposures which you gave to the faulty frames?

Or could there have been an intermittent shutter fault which caused it not to close properly?

 

[Paul Sorensen]

Yeah, I would agree that if there is really nothing there, then you have a shutter issue or HUGE over exposure, several stops at least. If it was just a normal over exposure, the kind caused by lighting issues, setting your meter at 400, that kind of thing, you would have negs that are less than optimal but have images on them. Perhaps even marginally printable. I think that if they are totally black, you likely have a shutter issue, or missed the exposure by a very large amount. (BTW, I am assuming that the rebates [edges] are normal, that only the frames are actually exposed, is that correct?)

 

[stradibarrius]

I used my hand held meter???Maybe I just had a brain fart but these two rolls were shot over a two week period?
Is it at all possible that the lab could have done anything to cause this type problem

 

[Vonder]

What camera did you use?

 

[stradibarrius]

AN RB67 w/127mm Secor "C", Kodak Ektar 100 film. Obviously I just made a colossal mistake when I set the exposure. I will just work at it some more.

 

[Marc Akemann]

AN RB67 w/127mm Secor "C", Kodak Ektar 100 film. Obviously I just made a colossal mistake when I set the exposure. I will just work at it some more.

This may be a stupid question but, with this camera, are you consistently doing the proper sequence of cocking the shutter and advancing the film with the two appropriate levers? One on the camera body and one on the film back?

Years ago, my first roll with an RB was a disaster because I kept forgetting to advance the film on a consistent basis.

-Marc