The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 45-200mm F4-5.6 OIS and the Olympus ED 75-300mm f4.8-6.7 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. Olympus ED 75-300mm f4.8-6.7 is the longer of the two lenses at 116mm. The Panasonic 45-200mm F4-5.6 OIS with a length of 100mm, is 16mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 70mm.
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 45-200mm F4-5.6 OIS weighs 380g, which means it is 50g (11%) lighter than the Olympus ED 75-300mm f4.8-6.7 which has a weight of 430g.
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 45-200mm F4-5.6 OIS and the Olympus ED 75-300mm f4.8-6.7 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 45-200mm F4-5.6 OIS has a focal range of 45-200mm and 4.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 90-400mm when used on a FourThirds format camera. Olympus ED 75-300mm f4.8-6.7 has a focal range of 75-300mm and 4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 150-600mm when used on a FourThirds format camera.