The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus 45mm F1.2 Pro and the Panasonic 42.5mm F1.7 OIS for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Olympus 45mm F1.2 Pro is the longer of the two lenses at 85mm. The Panasonic 42.5mm F1.7 OIS with a length of 50mm is 35mm shorter. Besides being longer, the Olympus 45mm F1.2 Pro also has a larger diameter of 70mm compared to Panasonic 42.5mm F1.7 OIS's 55mm diameter.
Below you can find the scaled side by side image of Olympus 45mm F1.2 Pro and Panasonic 42.5mm F1.7 OIS to get a better idea of how their size compare in real life.
Comparison image of Olympus 45mm F1.2 Pro and Panasonic 42.5mm F1.7 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. Panasonic 42.5mm F1.7 OIS weighs 130g, 68% (280g) lighter than the Olympus 45mm F1.2 Pro's weight of 410g.
Lens Mounts
Both Olympus 45mm F1.2 Pro and Panasonic 42.5mm F1.7 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
Olympus 45mm F1.2 Pro is a prime lens with fixed focal lenght of 45mm which has a 35mm equivalent focal range of 90mm when used on a FourThirds format camera. Panasonic 42.5mm F1.7 OIS is a prime lens with fixed focal lenght of 43mm which has a 35mm equivalent focal range of 90mm when used on a FourThirds format camera.