The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 50mm F1.4 AS UMC and the Panasonic 100-300mm F4-5.6 II 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. Panasonic 100-300mm F4-5.6 II is the longer of the two lenses at 126mm. The Samyang 50mm F1.4 AS UMC with a length of 75mm, is 51mm shorter. On the other hand, the Samyang 50mm F1.4 AS UMC has a larger diameter of 82mm compared to the Panasonic 100-300mm F4-5.6 II's 74mm diameter.
Below you can find a scaled side-by-side image of Samyang 50mm F1.4 AS UMC and Panasonic 100-300mm F4-5.6 II to get a better idea of how their sizes compare in real life.
Comparison image of the Samyang 50mm F1.4 AS UMC and the Panasonic 100-300mm F4-5.6 II Size and Weight 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. Panasonic 100-300mm F4-5.6 II weighs 520g, 2% (15g) lighter than the Samyang 50mm F1.4 AS UMC's weight of 535g.
Filter Threads
The Samyang 50mm F1.4 AS UMC has a filter size of 77mm whereas the Panasonic 100-300mm F4-5.6 II has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Samyang 50mm F1.4 AS UMC:
And these are the 67mm filters that we recommend for the Panasonic 100-300mm F4-5.6 II:
Lens Mounts
The Samyang 50mm F1.4 AS UMC has the Sony E lens mount whereas the Panasonic 100-300mm F4-5.6 II has the Micro Four Thirds lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Canon EF , Nikon F (FX) , Pentax KAF and Sony Alpha mounts.
Focal Range
Samyang 50mm F1.4 AS UMC is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm .
On the other hand, the Panasonic 100-300mm F4-5.6 II has a focal range of 100-300mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 200-600mm when used on a FourThirds format camera.
