In a small format 8×10 picture, the amount of usable photo area to put on the frame is measured in micrometers. This metric is called “pixel size”, or how much room a photograph or a photo can occupy on the screen.
The more pixels that are on your screen, the smaller the amount of photo area available for you to grab a photo from. The number of pixels does not have any effect on the size of the photo – it is just the amount of room you have to grab a photo from.
It is best to measure the entire width and height of the frame to keep the picture on your screen in view. The best way to do this is to take an average of the width and the height of the frame and divide by 100. If you measure your frame as follows:
width (cm) = 1.25 x 100 = 5.12
height (cm) = 1.25 x 100 = 5.12× (25)/(5.12) = 1.24
The first number in the above square is called the horizontal ratio (this ratio is always lower than the height), but it does not have any effect on the rest of the measurements. Measurements (width + height) are called “absolute” (absolute means without loss of height) in the image frame industry. But when we say “absolute” it means with no loss of resolution (so a photo that is 16:9 would be “absolute” only with the 1.24 pixels added on top of it).
When measuring the number of pixels in your frame, don’t worry too much about the aspect ratio. The only way you may see a larger or smaller aspect ratio is if viewing the picture on your smartphone or tablet with a display that has a native aspect ratio of 16:9.
Image processing techniques can help you to know if a photo is 4:3 or 16:9. By the way, the difference between 16:9 and 4:3 is that the aspect ratio is always larger in 4:3, while all other ratios are the same size in 16:9. Most of the time when we do tests with the 16:9 aspect ratio on a smartphone and a 5.7-inch smartphone, we usually see the difference between the two in the aspect ratio when viewing the picture on a larger screen at the same resolution.
How can I see the difference between 16:9 and 4:3?
I’ve been a