Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Olympus ED 8mm F1.8 Fisheye PRO is the longer of the two lenses at 80mm. The Panasonic Fisheye 8mm F3.5 with a length of 52mm is 28mm shorter. Besides being longer, the Olympus ED 8mm F1.8 Fisheye PRO also has a larger diameter of 62mm compared to Panasonic Fisheye 8mm F3.5's 61mm 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 Fisheye 8mm F3.5 weighs 165g, 90% (149g) lighter than the Olympus ED 8mm F1.8 Fisheye PRO's weight of 314g.
Below you can find the dimension and weight table of the 'Wideangle Fisheye Prime Lenses in Micro Four Thirds Mount for size comparison purposes.
Wideangle Fisheye Prime Lenses in Micro Four Thirds Mount for Size Comparison
Both Olympus ED 8mm F1.8 Fisheye PRO and Panasonic Fisheye 8mm F3.5 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.