is the ratio between the maximum and minimum focal length of a zoom lens.

The ratio of starting focal length (wide position) to the ending focal length (telephoto position) of a zoom lens.

The ratio of the starting focal length (wide position) to the ending focal length (telephoto position) of a zoom lens.

ZOOM RATIO: The ratio of the starting focal length (wide position) to the ending focal length (telephoto position) of a zoom lens.

Microscope objective lenses (10, 20, 30) of a telecentric system and having a high zoom ratio.

The optical zoom range is the ratio between the longest and shortest focal lengths.

Optical zoomThe zoom range is the ratio between the longest and shortest focal lengths.

The compensator compensates for the position of an image plane using the change of the zoom ratio by the variator.

In addition, its zoom objective is 0.7×-3×/ 1×-4.5× and its zoom ratio 1:4.3/ 1:4.5.

ZOOM, but this is not an indication of a malfunction.

Further, the zoom lens is compact with high performance and has a wide angle of view at the wide angle end and an extremely high zooming ratio is obtained.

There are provided an imaging device and method capable of designing a lens without considering the zoom position or the zoom amount and restoring an image by a calculation of high accuracy.

There is provided a low-price electronic imaging device having a high image quality, a high zoom ratio, and a small depth dimension.

Canon's first EF-M high zoom power lens covering a broad range of shooting scenes with a high zoom ratio of up to 8.3x (29–240mm equivalent).

Canon’s first EF-M high-zoom power lens covering a broad range of shooting scenes with a high-zoom ratio of up to 8.3x (29–240mm equivalent).