The type of photography that you are planning to use is an important decision factor. Here we have evaluated the TTArtisan AF 75mm F2 and the Sigma 19mm F2.8 EX DN 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. TTArtisan AF 75mm F2 is the longer of the two lenses at 69mm. The Sigma 19mm F2.8 EX DN with a length of 46mm, is 23mm shorter. Besides being longer, the TTArtisan AF 75mm F2 also has a larger diameter of 68mm compared to the Sigma 19mm F2.8 EX DN's 61mm 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 19mm F2.8 EX DN weighs 140g, 58% (200g) lighter than the TTArtisan AF 75mm F2's weight of 340g.
Filter Threads
The TTArtisan AF 75mm F2 has a filter size of 62mm whereas the Sigma 19mm F2.8 EX DN has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the TTArtisan AF 75mm F2:
And these are the 46mm filters that we recommend for the Sigma 19mm F2.8 EX DN:
Lens Mounts
The TTArtisan AF 75mm F2 has the Nikon Z lens mount whereas the Sigma 19mm F2.8 EX DN has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
TTArtisan AF 75mm F2 is also available in the Sony E , Leica L and Fujifilm X mounts.
Sigma 19mm F2.8 EX DN is also available in Micro Four Thirds mount.
Focal Range
TTArtisan AF 75mm F2 is a prime lens with fixed focal lenght of 75mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
112.5mm.
On the other hand, the Sigma 19mm F2.8 EX DN is a prime lens with fixed focal lenght of 19mm which has an effective (full-frame 35mm equivalent) focal range of 28.5mm when used on a APS-C / DX format camera.
