645n light leaks

rostek · 09-26-2020, 03:58 PM - **1 Like**

Hi, i was wandering can you help mi idenfity these light leaks. Looks like the courtain is old and has some holes, because this pattern repeats on several photos. How to check this manually on camera?

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Martin Stu · 09-26-2020, 07:46 PM

don't scare me

... is this really a defect in the image? not photoshop and not coloring the girl?

**ProfessorBuzz** · 09-27-2020, 06:19 AM - **1 Like**

Am a bit stumped by this.
The white spots have shifted from one image to the next. If it were the shutter, then I'd expect the white spots would be in exactly the same place frame to frame.

Some ideas:
Try a different film back. The position of the film frame on the rolls will shift as the roll fills up. That would account for the shifting of the white spots.
Do the spots shift a little with each frame? The two images above are 12 frames apart.

Check the film pressure plate is clean and not beat up.

Do you have 2 frames taken from the same position (eg no moving of the camera - tripod in the same place, model in same place, same framing)?

You could remove the film back and lens, and point the camera at a bright light source. Then you'd see if there were holes in one curtain. Again, I don't think this is it.

Put camera on B. Take a look with the shutter closed, and then push and hold the button, see if anything odd going on during the motion. Try same at a fast speed.

Light leaks tend to leave streaks.

Did you process this yourself?
Did you have a bright light behind the camera?

Sorry, that's all I've got for ideas.

rostek · 09-27-2020, 06:47 AM

i thought i cleaned the glass of the scanner but there were dust left... sorry for the trouble

rostek · 09-27-2020, 06:48 AM

problem solved

**jumbleview** · 09-27-2020, 12:38 PM

I learn the hard way that if you see defects on scanned images you first need to evaluate you scan technique Overexposed Left Edge on the My MX - PentaxForums.com

rostek · 09-27-2020, 01:18 PM

Originally posted by jumbleview

I learn the hard way that if you see defects on scanned images you first need to evaluate you scan technique Overexposed Left Edge on the My MX - PentaxForums.com

the dust gut under the glass of the scanner. no wonder i thought the glass was clean after simply sweeping it with cloth

**pentaxus** · 09-28-2020, 08:04 AM

Looks like junk on the negatives from something in the water or chemistry to me. This kind of thing can "become one" with the emulsion and be not cleanable.

rostek · 09-28-2020, 09:55 AM

Originally posted by pentaxus

Looks like junk on the negatives from something in the water or chemistry to me. This kind of thing can "become one" with the emulsion and be not cleanable.

already solved the problem, thx

09-27-2020, 06:48 AM	#5
rostek New Member Join Date: Nov 2019 Posts: 16 Original Poster	problem solved Attached Images

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09-26-2020, 07:46 PM	#2
Martin Stu Pentaxian Join Date: Jan 2019 Posts: 1,115	don't scare me ... is this really a defect in the image? not photoshop and not coloring the girl?

09-27-2020, 06:19 AM - 1 Like	#3
ProfessorBuzz Loyal Site Supporter Join Date: Feb 2018 Posts: 1,903	Am a bit stumped by this. The white spots have shifted from one image to the next. If it were the shutter, then I'd expect the white spots would be in exactly the same place frame to frame. Some ideas: Try a different film back. The position of the film frame on the rolls will shift as the roll fills up. That would account for the shifting of the white spots. Do the spots shift a little with each frame? The two images above are 12 frames apart. Check the film pressure plate is clean and not beat up. Do you have 2 frames taken from the same position (eg no moving of the camera - tripod in the same place, model in same place, same framing)? You could remove the film back and lens, and point the camera at a bright light source. Then you'd see if there were holes in one curtain. Again, I don't think this is it. Put camera on B. Take a look with the shutter closed, and then push and hold the button, see if anything odd going on during the motion. Try same at a fast speed. Light leaks tend to leave streaks. Did you process this yourself? Did you have a bright light behind the camera? Sorry, that's all I've got for ideas.

09-27-2020, 06:47 AM	#4
rostek New Member Join Date: Nov 2019 Posts: 16 Original Poster	i thought i cleaned the glass of the scanner but there were dust left... sorry for the trouble

09-27-2020, 12:38 PM	#6
jumbleview Site Supporter Join Date: May 2012 Location: Concord, CA Posts: 1,068	I learn the hard way that if you see defects on scanned images you first need to evaluate you scan technique Overexposed Left Edge on the My MX - PentaxForums.com

09-27-2020, 01:18 PM	#7
rostek New Member Join Date: Nov 2019 Posts: 16 Original Poster	Originally posted by jumbleview I learn the hard way that if you see defects on scanned images you first need to evaluate you scan technique Overexposed Left Edge on the My MX - PentaxForums.com the dust gut under the glass of the scanner. no wonder i thought the glass was clean after simply sweeping it with cloth

09-28-2020, 08:04 AM	#8
pentaxus Site Supporter Join Date: Jun 2010 Location: Central Coast, CA Posts: 1,313	Looks like junk on the negatives from something in the water or chemistry to me. This kind of thing can "become one" with the emulsion and be not cleanable.

09-28-2020, 09:55 AM	#9
rostek New Member Join Date: Nov 2019 Posts: 16 Original Poster	Originally posted by pentaxus Looks like junk on the negatives from something in the water or chemistry to me. This kind of thing can "become one" with the emulsion and be not cleanable. already solved the problem, thx