What the thread found

• The Betz topstage is not designed with adjustments for different plate widths and should work with PRO plates as supplied
• The lever that clamps the plate does not need to close completely flush to secure the plate properly; pressing firmly until snug is sufficient for safe operation
• Older camera plates may be too thin and allow the camera body to contact the clamping lever
• Replacement plates matching the correct thickness specification are available from third-party suppliers

Depends on

• One contributor acknowledged they have never owned or used a Betz topstage
• The advice about lever operation comes from a single user's experience after consultation with a supplier
• The discussion involves a borrowed plate that was incompatible, so general plate fit was not definitively tested

Parts

Top Stage

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