Which of the following processing errors causes films to turn black with poor image contrast?

The correct answer pertains to the condition where the developer solution is at an above-normal temperature. When the developer solution exceeds the optimal temperature, the chemical reactions during film development accelerate, leading to excessive blackening of the film. This rapid action does not allow for the proper development of the latent image, resulting in a film that turns black with poor image contrast.

In standard radiography practices, maintaining the developer solution at the correct temperature is crucial to ensure that the image quality is optimal. The ideal temperature helps achieve a clear contrast between the areas of interest on the film, which is vital for accurate interpretations.

Understanding film processing is key in radiography. Thus, recognizing that high developer temperatures can lead to poor image quality is fundamental for anyone involved in film processing.