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2x3 RB Series B Ground Glass

 
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camz



Joined: 15 Apr 2004
Posts: 135
Location: Southern CA

PostPosted: Mon Feb 22, 2021 8:50 pm    Post subject: 2x3 RB Series B Ground Glass Reply with quote

Does anyone know how to remove the ground glass on an RB series B 2x3?

I've removed the screws, but the glass won't budge.
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45PSS



Joined: 28 Sep 2001
Posts: 4020
Location: Mid Peninsula, Ca.

PostPosted: Mon Feb 22, 2021 10:49 pm    Post subject: Reply with quote

At the front of the view hood at the ground glass is a clip. Push that clip forward to release the base of the view hood. Remove 1 lower screw from the view hood to view door retainers and loosen the other 1/2 to 1 turn. Slide the view hood bar from behind the other retainer then remove the view hood from the camera.
Remove the 4 screws from the rear ground glass retainer spring then slip the ground glass from the front spring and out of the camera.
Ground side faces the mirror on installation.
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camz



Joined: 15 Apr 2004
Posts: 135
Location: Southern CA

PostPosted: Tue Feb 23, 2021 12:02 am    Post subject: Reply with quote

This unit doesn't have a spring retainer.

It's more of a frame unit with 4 screws that
must adjust the ground glass for focus.

Is there any information on how to adjust
the ground glass?
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45PSS



Joined: 28 Sep 2001
Posts: 4020
Location: Mid Peninsula, Ca.

PostPosted: Tue Feb 23, 2021 12:26 am    Post subject: Reply with quote

I have one from the late 1940's, it has the retainer spring for the view hood at the front center.

The ground glass springs/retainers have 2 screws front and rear.
Tripod mount the camera and focus on a target that is parallel to the film plane. Adjust for best overall focus with a loupe. I usually just check the center third of the ground glass once I set the retainers to the same position they were in before removal.
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