Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Panasonic 14-140mm F3.5-5.6 II OIS is the longer of the two lenses at 75mm. The Olympus ED 12-45mm F4 Pro with a length of 70mm is 5mm shorter. Besides being longer, the Panasonic 14-140mm F3.5-5.6 II OIS also has a larger diameter of 67mm compared to Olympus ED 12-45mm F4 Pro's 63mm diameter.
Below you can find the scaled side by side image of Olympus ED 12-45mm F4 Pro and Panasonic 14-140mm F3.5-5.6 II OIS to get a better idea of how their size compare in real life.
Comparison image of Olympus ED 12-45mm F4 Pro and Panasonic 14-140mm F3.5-5.6 II OIS Size and Weight 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. Olympus ED 12-45mm F4 Pro weighs 254g, which means it is 11g (4%) lighter than the Panasonic 14-140mm F3.5-5.6 II OIS which has a weight of 265g.
Lens Mounts
Both Olympus ED 12-45mm F4 Pro and Panasonic 14-140mm F3.5-5.6 II OIS 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
Olympus ED 12-45mm F4 Pro has a focal range of 24-90mm and 3.8X zoom ratio which has a 35mm equivalent focal range of 48-180mm when used on a FourThirds format camera. 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.