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Equipment

Contrast viewing glass

A dark monocular viewing filter used to evaluate relative lighting contrast and source direction without continuously viewing the full scene brightness.

Also known as: cameraman's glass, contrast glass, viewing glass, bullshit glass (dated slang)

Reviewed

A dark monocular viewing filter used to evaluate relative lighting contrast and source direction without continuously viewing the full scene brightness.

Use cases

  • Historically used by cinematographers, it does not replace a calibrated monitor, meter, or approved solar-viewing protection. Products and safe viewing limitations differ.

Setup

  • Confirm the intended use, inspect the equipment, and coordinate placement with the responsible department.

Safety notes

  • Use only within manufacturer ratings and the production safety plan.

In practice

Historically used by cinematographers, it does not replace a calibrated monitor, meter, or approved solar-viewing protection. Products and safe viewing limitations differ.

Usage note

The vulgar alias is historical slang and is not recommended professional language.

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