Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Olympus ED 14-150mm F4-5.6 II is the longer of the two lenses at 83mm. The Panasonic 14-140mm F3.5-5.6 II OIS with a length of 75mm is 8mm shorter. On the other hand, the Panasonic 14-140mm F3.5-5.6 II OIS has a larger diameter of 67mm compared to Olympus ED 14-150mm F4-5.6 II's 64mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Panasonic 14-140mm F3.5-5.6 II OIS weighs 265g, which means it is 19g (7%) lighter than the Olympus ED 14-150mm F4-5.6 II which has a weight of 284g.
Below you can find the dimension and weight table of the 'SuperZoom Lenses in Micro Four Thirds Mount for size comparison purposes.
SuperZoom Lenses in Micro Four Thirds Mount for Size Comparison
Lens Mounts
Both Panasonic 14-140mm F3.5-5.6 II OIS and Olympus ED 14-150mm F4-5.6 II has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are Panasonic GH6, OM System OM-1 and Panasonic GH5 II.
Focal Range
Panasonic 14-140mm F3.5-5.6 II OIS has a focal range of 14-140mm and 10.0X zoom ratio which has a 35mm equivalent focal range of 28-280mm when used on a FourThirds format camera. Olympus ED 14-150mm F4-5.6 II has a focal range of 14-150mm and 10.7X zoom ratio which has a 35mm equivalent focal range of 28-300mm when used on a FourThirds format camera.