The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 50mm F1.8 and the Tamron 10-24mm f3.5-4.5 II LD 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. Tamron 10-24mm f3.5-4.5 II LD is the longer of the two lenses at 84mm. The Sony FE 50mm F1.8 with a length of 60mm, is 24mm shorter. Besides being longer, the Tamron 10-24mm f3.5-4.5 II LD also has a larger diameter of 83mm compared to the Sony FE 50mm F1.8's 69mm 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. Sony FE 50mm F1.8 weighs 186g, which means it is 220g (54%) lighter than the Tamron 10-24mm f3.5-4.5 II LD which has a weight of 406g.
Filter Threads
The Sony FE 50mm F1.8 has a filter size of 49mm whereas the Tamron 10-24mm f3.5-4.5 II LD has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Sony FE 50mm F1.8:
And these are the 77mm filters that we recommend for the Tamron 10-24mm f3.5-4.5 II LD:
Lens Mounts
The Sony FE 50mm F1.8 has the Sony E lens mount whereas the Tamron 10-24mm f3.5-4.5 II LD has the Pentax KAF 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 Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Tamron 10-24mm f3.5-4.5 II LD is also available in Canon EF , Nikon F (DX), Sony Alpha and Canon EF mounts.
Focal Range
Sony FE 50mm F1.8 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 Tamron 10-24mm f3.5-4.5 II LD has a focal range of 10-24mm and 2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-36mm when used on a APS-C / DX format camera.
