Divide 85mm by 17mm to get the zoom range of 5x. Also, find the magnification produced by the lens. For example, the Canon EF-S 17-85mm IS USM Lens has a 5x zoom range. To get the binocular-like viewfinder magnification value of a lens… The total magnification of 40 means that the object appears forty times larger than the actual object. Also find its magnification. The Canon EF 28-300mm IS Lens has a zoom range of 10.7x. A 1x magnification power is a 100 percent increase in the magnified object’s … Lets apply image magnification equation to second lens m 2 = - 1.15 Second lens has magnification of – 1.15 Image magnification in terms of object/image height is Image generated from first lens going to be object for the second lens h i1 = h o2 From this equation we see that total magnification … Find the nature, position and size of the image. The distance of the object from the lens is 15 cm. View Answer Example 10.4 - A 2.0 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. Magnification power is calculated by dividing the focal length of the scanning object (lens) by the focal length of the eyepiece. If the viewer changes to the 10x objective lens, the total magnification will be the ocular's 10x magnification multiplied by the new objective lens's 10x magnification, calculated as 10 × 10, for a total magnification …