The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic X 35-100mm F2.8 II Power OIS and the Panasonic 45-150mm F4-5.6 OIS for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Panasonic X 35-100mm F2.8 II Power OIS is the longer of the two lenses at 100mm. The Panasonic 45-150mm F4-5.6 OIS with a length of 73mm, is 27mm shorter. Besides being longer, the Panasonic X 35-100mm F2.8 II Power OIS also has a larger diameter of 67mm compared to the Panasonic 45-150mm F4-5.6 OIS's 62mm diameter.
The 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 45-150mm F4-5.6 OIS weighs 200g, 43% (157g) lighter than the Panasonic X 35-100mm F2.8 II Power OIS's weight of 357g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Micro Four Thirds Mount for size comparison purposes.
Telephoto Zoom Lenses in Micro Four Thirds Mount for Size Comparison
Lens Mounts
Both the Panasonic X 35-100mm F2.8 II Power OIS and the Panasonic 45-150mm F4-5.6 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 OM System OM-5, Panasonic GH6 and OM System OM-1.
Focal Range
Panasonic X 35-100mm F2.8 II Power OIS has a focal range of 35-100mm and 2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 70-200mm when used on a FourThirds format camera. Panasonic 45-150mm F4-5.6 OIS has a focal range of 45-150mm and 3.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 90-300mm when used on a FourThirds format camera.