Tamron 35mm F/2.8 DI III OSD 1/2 Macro Lens - Sony E Mount vs Samyang VDSLR T1.5 MK2 Prime Cine Lens (EF Mount)
Specs side by side at each model's entry configuration, with the cheapest crypto price for each.

Tamron 35mm F/2.8 DI III OSD 1/2 Macro Lens - Sony E Mount
1 configurations
from $256

Samyang VDSLR T1.5 MK2 Prime Cine Lens (EF Mount)
3 configurations
from $486
1 of 1 specs differ across these 2.
Questions
What is the difference between the Tamron 35mm F/2.8 DI III OSD 1/2 Macro Lens - Sony E Mount and the Samyang VDSLR T1.5 MK2 Prime Cine Lens (EF Mount)?
1 of the 1 specs we track differ at their base configurations. The table above marks every one, and flags the better value wherever a spec has a better direction.
Which is cheaper?
Tamron 35mm F/2.8 DI III OSD 1/2 Macro Lens - Sony E Mount from $256, $230 less than the Samyang VDSLR T1.5 MK2 Prime Cine Lens (EF Mount). Both are the cheapest total, shipping included, for the entry configuration.
Are you comparing the same configurations?
Each model is shown at its entry configuration, which is the only fair basis for a like-for-like table. Open either product to switch memory, storage or chip and see how its price moves.