Pentax 645N Dark Shadow on the Frames

chx1115 · 01-11-2022, 09:02 PM

Hi,

This is my first time posting here, and also my first time owning a Pentax 645 camera.

After shooting a few rolls, I noticed there is sometime a dark shadow along one edge of the frames, in the shape of a trapezoid. So I took a look at the camera, and saw something hanging at the back of the shutter whenever it's open. And that piece seems causing the shadow.

Since I don't own any Pentax 645 camera before, I am not sure if that's serious or something perhaps I could get it fixed by myself?

Thanks,
Xiao

Attached Images

**pentaxus** · 01-11-2022, 10:58 PM

That is not supposed to be hanging down like that. It is part of the autofocus system. Either it popped out of place or it is broken.

**Pål Jensen** · 01-12-2022, 06:06 AM

Seems to be the sub-mirror assembly (for AF) that doesn't flip all the way up with the main mirror.

01-11-2022, 09:02 PM	#1
chx1115 New Member Join Date: Jan 2022 Posts: 1	Pentax 645N Dark Shadow on the Frames Hi, This is my first time posting here, and also my first time owning a Pentax 645 camera. After shooting a few rolls, I noticed there is sometime a dark shadow along one edge of the frames, in the shape of a trapezoid. So I took a look at the camera, and saw something hanging at the back of the shutter whenever it's open. And that piece seems causing the shadow. Since I don't own any Pentax 645 camera before, I am not sure if that's serious or something perhaps I could get it fixed by myself? Thanks, Xiao Attached Images

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01-11-2022, 10:58 PM	#2
pentaxus Site Supporter Join Date: Jun 2010 Location: Central Coast, CA Posts: 1,315	That is not supposed to be hanging down like that. It is part of the autofocus system. Either it popped out of place or it is broken.

01-12-2022, 06:06 AM	#3
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 4,371	Seems to be the sub-mirror assembly (for AF) that doesn't flip all the way up with the main mirror.