The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10-18mm F2.8 DC DN C and the Venus 25mm F2.8 2.5-5X Ultra Macro 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. Venus 25mm F2.8 2.5-5X Ultra Macro is the longer of the two lenses at 65mm. The Sigma 10-18mm F2.8 DC DN C with a length of 64mm, is 1mm shorter. Besides being longer, the Venus 25mm F2.8 2.5-5X Ultra Macro also has a larger diameter of 82mm compared to the Sigma 10-18mm F2.8 DC DN C's 72mm diameter.
Below you can find a scaled side-by-side image of Sigma 10-18mm F2.8 DC DN C and Venus 25mm F2.8 2.5-5X Ultra Macro to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 10-18mm F2.8 DC DN C and the Venus 25mm F2.8 2.5-5X Ultra Macro 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. Sigma 10-18mm F2.8 DC DN C weighs 255g, which means it is 145g (36%) lighter than the Venus 25mm F2.8 2.5-5X Ultra Macro which has a weight of 400g.
Lens Mounts
The Sigma 10-18mm F2.8 DC DN C has the Sony E lens mount whereas the Venus 25mm F2.8 2.5-5X Ultra Macro has the Nikon F (DX) 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 Nikon D6 , Nikon D780 and Nikon D3500 for the Nikon F (DX) Mount.
Leica L , Fujifilm X and Canon RF mounts.
Canon EF , Pentax KAF2 and Sony E mounts.
Focal Range
Sigma 10-18mm F2.8 DC DN C has a focal range of 10-18mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-27mm when used on a APS-C / DX format camera.
On the other hand, the Venus 25mm F2.8 2.5-5X Ultra Macro is a prime lens with fixed focal lenght of 25mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 37.5mm .
