Werid light leak frames from my Mamiya RZ67 Pro II photos

[Blue Glass]

Hi,
so I recently notice I get a light leak on one of my photo from my RZ67 pro II. this have only occur to me twice, I don't think there is any light seal problem on my camera body since I have shoot around 20 rolls with it and I only get two shot with this kind of Leak. Would it be possible to be caused by overexposured?

The reflection in second pictrue is my hand with phone camera, the negative is pure black.
As shown in the pictrues, the light leak is going though the border of the frame, I developed the second photo at home, but the first photo is developed at lab, so I don't think it is the problem with developing process. Noted: the first picture is not at the end of the film roll, so I don't think it get fat roll, since later photo is fine.

However, I did also shoot this camera with muti exposure before, I exposed the pictrue under it with at least three shoots, so I don't think the could be cause by overexposre either.

 

[koraks]

The second example for sure looks like massive overexposure to me. Under such conditions there will be considerably bleeding beyond the image borders.
For the first example I'd also expect overexposure to be the most probable cause.

Accidents happen; this is most likely a simple case of incorrectly set aperture or shutter speed.

 

[Blue Glass]

The second example for sure looks like massive overexposure to me. Under such conditions there will be considerably bleeding beyond the image borders.
For the first example I'd also expect overexposure to be the most probable cause.

Accidents happen; this is most likely a simple case of incorrectly set aperture or shutter speed.

Yea, I did suspect it might cause by the overexposure, but what surprised me was that the multi exposure shot was not showing the same effect on the frame. I guess I have really overexposed too much for my first two shoot, especially the second one

 

[MattKing]

Perhaps the shutter stayed open longer than intended.
Has the shutter in that lens been acting up?

 

[Blue Glass]

Perhaps the shutter stayed open longer than intended.
Has the shutter in that lens been acting up?

Not any that I have notice, shutter sounds correct to me. I think I might have change the F stop on those lens unnoticed, sometimes I find I have used a different f stop than what I expected, those aperture ring are really easy to move. What might have happen might just be I somehow move the aperture to fully open on a bright sunny day.

 

[MattKing]

Do you use a metering prism or chimney finder?
Because if you do, and you inadvertently have the lens switch on the M position, rather than the A position, your metering might have been off.
Don't ask me how I know ......

 

[Blue Glass]

Do you use a metering prism or chimney finder?
Because if you do, and you inadvertently have the lens switch on the M position, rather than the A position, your metering might have been off.
Don't ask me how I know ......

haven't try the chimney or metering finder yet. However, I did make some stupid mistakes around the mirror lock-up before. After screwing in the shutter release to the lens and screwing it out, I didn't notice the red mark hadn't gone down yet. I get confused about why the advance lever wouldn't advance after I take the shot with the shutter button, so I just used the manual shutter for the rest of that roll. It was a roll of E100, in the end, there were four shots of nothing.

 

[koraks]

Yea, I did suspect it might cause by the overexposure, but what surprised me was that the multi exposure shot was not showing the same effect on the frame. I guess I have really overexposed too much for my first two shoot, especially the second one

One or two stops of overexposure doesn't create bleeding around the edges, but e.g. 6-7 stops will.

 

[mshchem]

I have been using this camera for over 25 years, I still make mistakes. It's easy to fumble the aperture and shutter speed. I have the auto exposure prism finder for the RZ67II, but it's so heavy I very rarely use it. Mostly I shoot with the waist level finder.
I recently purchased a Nons Instax back for this camera. Great for proofing except that Instax is ISO 800 and Ektar is 100. Got one more thing to remember

 

[Blue Glass]

One or two stops of overexposure doesn't create bleeding around the edges, but e.g. 6-7 stops will.

That would make sense, the weather was really great for the first shoot, I didn’t purchase ND for my lens yet so I remember we had to crack the f stop all the way to 16 or 22. the biggest aperture on that lens was 4. So that would make it around 4 to 5 stop overexposed if I accidentally turn my f stop to 4.

 

[koraks]

Yeah, that would explain it pretty well. So far I see no signs of major equipment failure etc so that's good news!

 

[Blue Glass]

I have been using this camera for over 25 years, I still make mistakes. It's easy to fumble the aperture and shutter speed. I have the auto exposure prism finder for the RZ67II, but it's so heavy I very rarely use it. Mostly I shoot with the waist level finder.
I recently purchased a Nons Instax back for this camera. Great for proofing except that Instax is ISO 800 and Ektar is 100. Got one more thing to remember

It is a truly a fascinating camera, its mistake proofing mechanism save my ass multiple times already, like it won’t let me take off my back if the blade wasn’t in. But my fine focusing knob did get wear out and I end it up need to getting it fix by replacing the plastic gear with metal gear.

I recently purchased a Nons Instax back for this camera. Great for proofing except that Instax is ISO 800 and Ektar is 100. Got one more thing to remember

I find it useful to stick a piece of sticky paper label on the top of the back and write down the iso of film or instax that you are shooting with it. I had two film back and that really help me to track what I am shooting with. But do be careful since some of the cheap label will leave residue and hard to peel off.

 

[Blue Glass]

Yeah, that would explain it pretty well. So far I see no signs of major equipment failure etc so that's good news!

Indeed, glad it didn’t have any major issue other than the gear get wear out for the fine focusing knob. I did some research and find that is not uncommon issue. Currently getting it fix by replacing the plastic gear with metal gear. Thanks for sharing the info about overexposure and light leak! Truly appreciated!

 

[mshchem]

It is a truly a fascinating camera, its mistake proofing mechanism save my ass multiple times already, like it won’t let me take off my back if the blade wasn’t in. But my fine focusing knob did get wear out and I end it up need to getting it fix by replacing the plastic gear with metal gear.

I find it useful to stick a piece of sticky paper label on the top of the back and write down the iso of film or instax that you are shooting with it. I had two film back and that really help me to track what I am shooting with. But do be careful since some of the cheap label will leave residue and hard to peel off.View attachment 426099

Very good idea!