Table of Contents
- 1 Why are photos of the same resolution different sizes?
- 2 How does image resolution affect file size?
- 3 Why are JPEG file sizes different?
- 4 How does image resolution affect image quality?
- 5 What is the difference between resolution and image size?
- 6 Do images with the same size have the same amount of data?
- 7 Is it possible to attach images with different resolutions?
- 8 Why does the second set of images have more storage?
Why are photos of the same resolution different sizes?
Image resolution is determined by the total number of pixels located within the image noted as pixels wide x pixels high. They are the same size in dimensions, but their file sizes are significantly different, because the image on the left has much more information, or pixel variation than the logo on the right.
How does image resolution affect file size?
Image resolution does one thing and one thing only; it controls the size that your image will print. Higher resolution values pack more pixels into a linear inch, resulting in a smaller print size. And lower resolution values pack fewer pixels per inch, giving us a larger print size.
Why are pictures different file sizes?
JPEG compression says how much details to throw away, not how much to keep. With the same amount of details thrown away, two different images will be left with different amount of details. The storage is generally proportional to the amount of details left in the image after compression.
Why are JPEG file sizes different?
Simply put, JPEG reduces the detail of the picture, attempting to reduce the kind of detail that is the least noticeable to a human person. With higher quality settings (resulting in larger file sizes), the loss of detail may not be noticeable at all.
How does image resolution affect image quality?
Higher resolutions mean that there more pixels per inch (PPI), resulting in more pixel information and creating a high-quality, crisp image. Images with lower resolutions have fewer pixels, and if those few pixels are too large (usually when an image is stretched), they can become visible like the image below.
How the quality of digital image can have an impact on storage size?
Increasing the bit depth will increase the amount of backing storage needed to store the image, but will result in a better quality image. Reducing the bit depth will save on storage, but the image quality will be reduced at the same time. This will have an effect on the quality of the image and on the file size.
What is the difference between resolution and image size?
Resolution is determined by the number of pixels, or dots, in a linear inch. The image size is determined by the resolution multiplied by the height and the width of the image. Your height and width will be determined by how you received the image, be it a camera, scan, etc.
Do images with the same size have the same amount of data?
Two images with the same dimensions contain the same amount of data but not necessarily the same amount of information. A pure white image contains virtually no information and can be compressed into a very small space (it is sufficient to store only the height and width in order to fully recreate this image).
What is the difference between image file size and resolution?
The more pixels in a photograph, the more will be its resolution, the more will be its file size and more details it will contain. For example, a 1024×768 pixels image file will contain more details than a 600×200 pixels image file for same photograph.
Is it possible to attach images with different resolutions?
That is work great but fail in case of different resolutions, i.e. images are identical by eyebut different in it byte content. For example see my image attaches: one of it has 72 ppibut another 96 ppi.
Why does the second set of images have more storage?
The storage is generally proportional to the amount of details left in the image after compression. In your second set, the second image clearly has more details. This should be obvious compared to the first one which has huge expanses of uniform color which compress much better.