Certified Professional Photographer (CPP) Practice Exam

The size of 135 film is _______mm x 24mm.

1. 24 x 36

2. 36 x 24

3. 35 x 24

4. 30 x 40

The correct answer is: 36 x 24

The correct size of 135 film is 36 mm x 24 mm, which corresponds to the dimensions provided in the chosen answer. This film format is widely recognized and used in still photography, providing a standard width of 36 mm and a height of 24 mm. The rectangular shape and these specific measurements are critical for the intended aspect ratio and compatibility with 35 mm cameras. Understanding this size is essential for photographers working with traditional film or transitioning between film and digital formats, as it affects lens selection, composition, and printing options. Other options present incorrect dimensions for 135 film or use non-standard measurements. For instance, 24 x 36 mm is the same dimensions but expressed differently and would likely cause confusion, and the dimensions of 35 x 24 mm and 30 x 40 mm do not correspond to the standard 135 film size, making them inaccurate choices.