The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina Opera 50mm F1.4 and the Sigma 50mm F1.4 DG HSM A 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. Tokina Opera 50mm F1.4 is the longer of the two lenses at 108mm. The Sigma 50mm F1.4 DG HSM A with a length of 100mm, is 8mm shorter. On the other hand, the Sigma 50mm F1.4 DG HSM A has a larger diameter of 85mm compared to the Tokina Opera 50mm F1.4's 80mm 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. Sigma 50mm F1.4 DG HSM A weighs 815g, 14% (135g) lighter than the Tokina Opera 50mm F1.4's weight of 950g.
Filter Threads
The Tokina Opera 50mm F1.4 has a filter size of 72mm whereas the Sigma 50mm F1.4 DG HSM A 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 72mm filters that we recommend you to consider for the Tokina Opera 50mm F1.4:
And these are the 77mm filters that we recommend for the Sigma 50mm F1.4 DG HSM A:
Lens Mounts
The Tokina Opera 50mm F1.4 has the Nikon F (FX) lens mount whereas the Sigma 50mm F1.4 DG HSM A has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Tokina Opera 50mm F1.4 is also available in the Canon EF mount.
Sigma 50mm F1.4 DG HSM A is also available in Canon EF , Sigma SA, Nikon F (FX) and Leica L mounts.
Focal Range
Both lenses have the same focal range of
50mm and the fastest aperture of
F1.4.