The type of photography that you are planning to use is an important decision factor. Here we have evaluated the SG-image 25mm F1.8 and the Viltrox 35mm F1.7 E 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 35mm F1.7 E is the longer of the two lenses at 56mm. The SG-image 25mm F1.8 with a length of 32mm, is 24mm shorter. On the other hand, the SG-image 25mm F1.8 has a larger diameter of 67mm compared to the Viltrox 35mm F1.7 E's 64mm 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. SG-image 25mm F1.8 weighs 145g, which means it is 35g (19%) lighter than the Viltrox 35mm F1.7 E which has a weight of 180g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
Filter Threads
Both the SG-image 25mm F1.8 and the Viltrox 35mm F1.7 E have the same Filter thread size of 52mm.
Below are links to the 52mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the SG-image 25mm F1.8 and the Viltrox 35mm F1.7 E has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
SG-image 25mm F1.8 is also available in the Nikon Z and Fujifilm X mounts.
Focal Range
SG-image 25mm F1.8 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 Viltrox 35mm F1.7 E is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of 52.5mm when used on a APS-C / DX format camera.
