The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 25mm F1.7 E and the TTArtisan 27mm F2.8 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. Viltrox 25mm F1.7 E is the longer of the two lenses at 56mm. The TTArtisan 27mm F2.8 with a length of 41mm, is 15mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 64mm.
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. TTArtisan 27mm F2.8 weighs 94g, 44% (76g) lighter than the Viltrox 25mm F1.7 E's weight of 170g.
Filter Threads
The Viltrox 25mm F1.7 E has a filter size of 52mm whereas the TTArtisan 27mm F2.8 has a 39mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Viltrox 25mm F1.7 E:
And these are the 39mm filters that we recommend for the TTArtisan 27mm F2.8:
Lens Mounts
The Viltrox 25mm F1.7 E has the Sony E lens mount whereas the TTArtisan 27mm F2.8 has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
TTArtisan 27mm F2.8 is also available in Sony E and Nikon Z mounts.
Focal Range
Viltrox 25mm F1.7 E is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of
37.5mm when used on a APS-C / DX format camera.
On the other hand, the TTArtisan 27mm F2.8 is a prime lens with fixed focal lenght of 27mm which has an effective (full-frame 35mm equivalent) focal range of 40.5mm when used on a APS-C / DX format camera.