Picture File Size

Please see the pic below which is self-explanatory, however, I have given a detailed explanation of what influences the file size in the iPhone 12 Pro which I used here. Please note the time of the photo capture. All Photos taken within a minute.

The file size of photographs captured on an iPhone 12 Pro can be influenced by various factors. Here are the key factors that can affect file size in iPhone 12 Pro photography:

1. Resolution: The iPhone 12 Pro camera can capture images with different resolutions, ranging from standard resolution to higher quality options like HDR or ProRAW. Higher resolutions generally result in larger file sizes. However, I have not changed the resolution settings during the 4 Photos that I took using the iPhone 12 Pro.
2. ISO (sensitivity): ISO settings determine the sensitivity of the camera sensor to light. Higher ISO values are typically used in low-light conditions to capture brighter images. When ISO is increased, the camera sensor amplifies the signal, which can introduce more noise and increase file size.
3. Lenses (wide, ultra-wide & Telephoto): The iPhone 12 Pro has a camera system with a wide lens, an ultra-wide lens, and telephoto lenses. The lens choice can affect the field of view and composition of the photograph but does not directly impact file size. The telephoto lens has a longer focal length, which allows for optical zoom capabilities when you use the telephoto lens on the iPhone 12 Pro
4. Focal length (f): The focal length of the lens affects the perspective and magnification of the subject. However, it does not directly affect the file size.
5. Image format: The iPhone 12 Pro supports various image formats, including JPEG, HEIF, and ProRAW. JPEG and HEIF formats use compression techniques to reduce file size, while ProRAW preserves more data and produces larger file sizes.
6. Image content: The complexity of the scene, the level of detail, and the presence of noise can influence the file size. Images with more intricate details or noise tend to have larger file sizes as they require more data to represent accurately.
7. Compression algorithm: The iPhone 12 Pro uses a compression algorithm to reduce the file size of images while maintaining an acceptable level of image quality. Different compression algorithms can result in variations in file size.
8. Dynamic range: Lighting conditions affect the dynamic range of the scene, which refers to the range of brightness levels from the darkest to the brightest areas. High-contrast scenes with significant differences in brightness between the highlights and shadows may require additional data to represent accurately. This can lead to larger file sizes to capture the extended dynamic range. (Not in this case I have not changed the range except zoom)