The percentage is the scaling applied to render the image onto the display. The size of the image on screen will therefore depend on your screen size. Conceptually this can be thought of:

• 100% means that each pixel in the image takes 100% of a pixel on screen.
• 200% is zoom in because each pixel of the image takes 200% of a screen pixel which is 2 pixels vertically and 2 pixels horizontally, so 4 pixels in total.
• 50% zooms out because each pixel is scaled to the size of 1/2 pixel which means that 4 image pixels get mapped to a single screen pixel since the image pixels are scaled 50% horizontally and vertically.

Those who take issue with the simplification of the above list, strictly speaking the mapping can be more complicated to provide a clearer zoom but in terms of scale, that is what happens.

The percentage zoom is unrelated to focal-length. It is simply a pixel-to-screen scaling.

The percentage is the scaling applied to render the image onto the display. The size of the image on screen will therefore depend on your screen size. Conceptually this can be thought of:

• 100% means that each pixel of the image is shown as 100% of a pixel on screen.
• 200% is zoom in because each pixel of the image takes 200% of a screen pixel which is 2 pixels vertically and 2 pixels horizontally, so 4 pixels in total.
• 50% zooms out because each pixel is represented by a 1/2 screen pixel, so 4 image pixels get mapped to a single screen pixel since image pixels are scaled 50% horizontally and vertically.

For those who take issue with the simplification of the above list, strictly speaking the mapping can be more complicated to provide a clearer zoom but in terms of scale, that is what happens.

The percentage zoom is unrelated to focal-length. It is simply a pixel-to-screen scaling.

The percentage is the scaling applied to render the image onto the display. The size of the image on screen will therefore depend on your screen size.

• 100% means that each pixel in the image takes 100% of a pixel on screen.
• 50% is that each image pixel takes 50% of a screen pixel.
• 200% is zoom in because each pixel of the image takes 200% of a screen pixel which is 2 pixels.

The percentage zoom is unrelated to focal-length. It is simply a pixel-to-screen scaling.

The percentage is the scaling applied to render the image onto the display. The size of the image on screen will therefore depend on your screen size. Conceptually this can be thought of:

• 100% means that each pixel in the image takes 100% of a pixel on screen.
• 200% is zoom in because each pixel of the image takes 200% of a screen pixel which is 2 pixels vertically and 2 pixels horizontally, so 4 pixels in total.
• 50% zooms out because each pixel is scaled to the size of 1/2 pixel which means that 4 image pixels get mapped to a single screen pixel since the image pixels are scaled 50% horizontally and vertically.

Those who take issue with the simplification of the above list, strictly speaking the mapping can be more complicated to provide a clearer zoom but in terms of scale, that is what happens.

The percentage zoom is unrelated to focal-length. It is simply a pixel-to-screen scaling.