When processing a freshly exposed sensitometric strip daily, what instrument should you read it with?

When processing a freshly exposed sensitometric strip daily, what instrument should you read it with?

• A. Densitometer
• B. Spectrophotometer
• C. Caliper
• D. Thickness Gauge

Answer: (A)

Reading a freshly exposed sensitometric strip daily relies on a densitometer because the goal is to measure optical density—the amount of light transmitted through the developed film. The densitometer provides a numeric density value, which feeds into the sensitometric (H&D) curve used to monitor processor performance, film speed, and overall image quality. Other instruments don’t measure density: a spectrophotometer analyzes color or spectral content, while calipers or thickness gauges measure physical dimensions. Therefore, the densitometer is the appropriate tool for this task.

Reading a freshly exposed sensitometric strip daily relies on a densitometer because the goal is to measure optical density—the amount of light transmitted through the developed film. The densitometer provides a numeric density value, which feeds into the sensitometric (H&D) curve used to monitor processor performance, film speed, and overall image quality. Other instruments don’t measure density: a spectrophotometer analyzes color or spectral content, while calipers or thickness gauges measure physical dimensions. Therefore, the densitometer is the appropriate tool for this task.