The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 25mm F1.7 X and the AstrHori AF 27mm F2.8 Z 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 X is the longer of the two lenses at 56mm. The AstrHori AF 27mm F2.8 Z with a length of 43mm, is 13mm shorter. On the other hand, the AstrHori AF 27mm F2.8 Z has a larger diameter of 67mm compared to the Viltrox 25mm F1.7 X's 64mm diameter.
Below you can find a scaled side-by-side image of Viltrox 25mm F1.7 X and AstrHori AF 27mm F2.8 Z to get a better idea of how their sizes compare in real life.
Comparison image of the Viltrox 25mm F1.7 X and the AstrHori AF 27mm F2.8 Z Size and Weight 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. AstrHori AF 27mm F2.8 Z weighs 167g, 7% (13g) lighter than the Viltrox 25mm F1.7 X's weight of 180g.
Filter Threads
The Viltrox 25mm F1.7 X has a filter size of 52mm whereas the AstrHori AF 27mm F2.8 Z 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 X:
And these are the 39mm filters that we recommend for the AstrHori AF 27mm F2.8 Z:
Lens Mounts
The Viltrox 25mm F1.7 X has the Fujifilm X lens mount whereas the AstrHori AF 27mm F2.8 Z has the Nikon Z lens mount . Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and RED Komodo-X 6K Z , Nikon Z50 II and Nikon Z30 for the Nikon Z Mount.
Focal Range
Viltrox 25mm F1.7 X 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 AstrHori AF 27mm F2.8 Z 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.
