The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander SEPTON 40mm f2 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. TTArtisan 27mm F2.8 is the longer of the two lenses at 41mm. The Voigtlander SEPTON 40mm f2 with a length of 32mm, is 9mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 68mm.
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 100g, 51% (105g) lighter than the Voigtlander SEPTON 40mm f2's weight of 205g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Nikon Z Mount for size comparison purposes.
Standard Lenses in Nikon Z Mount for Size Comparison
Filter Threads
The Voigtlander SEPTON 40mm f2 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 Voigtlander SEPTON 40mm f2:
And these are the 39mm filters that we recommend for the TTArtisan 27mm F2.8:
Lens Mounts
Both the Voigtlander SEPTON 40mm f2 and the TTArtisan 27mm F2.8 has the same Nikon Z lens mount. Some of the latest released cameras that are compatible with the Nikon Z lenses are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z.
Voigtlander SEPTON 40mm f2 is also available in the Sony E mount.
TTArtisan 27mm F2.8 is also available in Sony E and Fujifilm X mounts.
Focal Range
Voigtlander SEPTON 40mm f2 is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
60mm.
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.