The area occupied by one frame on 35-mm film is 24 mm by 36 mm see the figure with Problem 18

step 1 In this problem, we have a camera that takes pictures of a person that has this size here, 1 .82

The area occupied by one frame on 35-mm film is 24 mm by 36...

The area occupied by one frame on $35-\mathrm{mm}$ film is $24 \mathrm{~mm}$ by $36 \mathrm{~mm}$ see the figure with Problem 18 . The focal length of the camera lens is $50.0 \mathrm{~mm}$. A picture is taken of a person $182 \mathrm{~cm}$ tall. What is the minimum distance from the camera for the person to stand so that the image fits on the film? Give two answers; one for each orientation of the camera

Key Concepts

Magnification

Magnification in optics is defined as the ratio of the image size to the object size. In a lens system, it is often given by the relationship m = f / (distance - f) for objects far away relative to the focal length, or by the ratio of image dimension to object dimension. This concept is critical in determining how far the object must be placed from the camera so that its sized image correctly fits onto the film frame.

Film Format Orientation

The film format, particularly the dimensions of the frame (aspect ratio of 24 mm by 36 mm in this case), plays a significant role in photography. Depending on whether the camera is oriented in portrait or landscape mode, one of the film’s dimensions becomes the limiting factor for capturing the full height or width of the object. Understanding this concept is essential as it influences which calculation is used in ensuring the entire subject fits on the film.

Similar Triangles

In photographic imaging, the formation of the image by a lens can be modeled with similar triangles. This principle establishes a proportional relationship between the dimensions of the object and those of the image, with the focal length of the lens serving as a key link in the relationship. It allows us to set up ratios (object size to image size) which can be used to determine distances such that the object fits within the frame.

Transcript

Please give Ace some feedback