The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 15mm f4.5 and the Sigma 10-18mm F2.8 DC DN C 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. Sigma 10-18mm F2.8 DC DN C is the longer of the two lenses at 64mm. The Venus 15mm f4.5 with a length of 48mm, is 16mm shorter. Besides being longer, the Sigma 10-18mm F2.8 DC DN C also has a larger diameter of 72mm compared to the Venus 15mm f4.5's 70mm 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. Sigma 10-18mm F2.8 DC DN C weighs 255g, 17% (53g) lighter than the Venus 15mm f4.5's weight of 308g.
Filter Threads
The Venus 15mm f4.5 has a filter size of 62mm whereas the Sigma 10-18mm F2.8 DC DN C has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Venus 15mm f4.5:
And these are the 67mm filters that we recommend for the Sigma 10-18mm F2.8 DC DN C:
Lens Mounts
Both the Venus 15mm f4.5 and the Sigma 10-18mm F2.8 DC DN C has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Venus 15mm f4.5 is also available in the Nikon Z , Canon RF and Leica L mounts.
Sigma 10-18mm F2.8 DC DN C is also available in Leica L , Fujifilm X and Canon RF mounts.
Focal Range
Venus 15mm f4.5 is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
22.5mm.
On the other hand, the 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.
