The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon T-S 24mm f3.5 and the Tamron AF 28-300mm f3.5-6.3 XR VC 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. Rokinon T-S 24mm f3.5 is the longer of the two lenses at 112mm. The Tamron AF 28-300mm f3.5-6.3 XR VC LD with a length of 78mm, is 34mm shorter. On the other hand, the Tamron AF 28-300mm f3.5-6.3 XR VC LD has a larger diameter of 99mm compared to the Rokinon T-S 24mm f3.5's 86mm 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. Tamron AF 28-300mm f3.5-6.3 XR VC LD weighs 555g, 18% (125g) lighter than the Rokinon T-S 24mm f3.5's weight of 680g.
Filter Threads
The Rokinon T-S 24mm f3.5 has a filter size of 82mm whereas the Tamron AF 28-300mm f3.5-6.3 XR VC LD 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 82mm filters that we recommend you to consider for the Rokinon T-S 24mm f3.5:
And these are the 67mm filters that we recommend for the Tamron AF 28-300mm f3.5-6.3 XR VC LD:
Lens Mounts
Both the Rokinon T-S 24mm f3.5 and the Tamron AF 28-300mm f3.5-6.3 XR VC LD has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Rokinon T-S 24mm f3.5 is also available in Nikon F (FX) and Sony Alpha mounts.
Tamron AF 28-300mm f3.5-6.3 XR VC LD is also available in Nikon F (FX) mount.
Focal Range
Rokinon T-S 24mm f3.5 is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
38.4mm.
On the other hand, the Tamron AF 28-300mm f3.5-6.3 XR VC LD has a focal range of 28-300mm and 10.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 44.8 - 480mm.