The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 85mm F1.4 and the Olympus ED 40-150mm f4-5.6 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 40-150mm f4-5.6 is the longer of the two lenses at 86mm. The Samyang 85mm F1.4 with a length of 75mm, is 11mm shorter. On the other hand, the Samyang 85mm F1.4 has a larger diameter of 78mm compared to the Olympus ED 40-150mm f4-5.6's 64mm 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. Olympus ED 40-150mm f4-5.6 weighs 190g, 64% (349g) lighter than the Samyang 85mm F1.4's weight of 539g.
Filter Threads
The Samyang 85mm F1.4 has a filter size of 72mm whereas the Olympus ED 40-150mm f4-5.6 has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Samyang 85mm F1.4:
And these are the 58mm filters that we recommend for the Olympus ED 40-150mm f4-5.6:
Lens Mounts
The Samyang 85mm F1.4 has the Four Thirds lens mount whereas the Olympus ED 40-150mm f4-5.6 has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Samyang 85mm F1.4 is also available in the Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.
Focal Range
Samyang 85mm F1.4 is a prime lens with fixed focal lenght of 85mm.
On the other hand, the Olympus ED 40-150mm f4-5.6 has a focal range of 40-150mm and 3.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 80-300mm when used on a FourThirds format camera.
