The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus ED 8mm F1.8 Fisheye and the Samyang 7.5mm F3.5 Fisheye MFT for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Olympus ED 8mm F1.8 Fisheye is the longer of the two lenses at 80mm. The Samyang 7.5mm F3.5 Fisheye MFT with a length of 48mm, is 32mm shorter. Besides being longer, the Olympus ED 8mm F1.8 Fisheye also has a larger diameter of 62mm compared to the Samyang 7.5mm F3.5 Fisheye MFT's 60mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Samyang 7.5mm F3.5 Fisheye MFT weighs 197g, 37% (117g) lighter than the Olympus ED 8mm F1.8 Fisheye'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.
Ultra-Wideangle Lenses in Micro Four Thirds Mount for Size Comparison
Lens Mounts
Both the Olympus ED 8mm F1.8 Fisheye and the Samyang 7.5mm F3.5 Fisheye MFT 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-3 Astro, OM System OM-5 II and OM System OM-3.
Focal Range
Both lenses have the same focal range of
8mm but while Olympus ED 8mm F1.8 Fisheye has the fastest aperture of
F1.8, the Samyang 7.5mm F3.5 Fisheye MFT's widest aperture value is
F3.5.
