The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 7.5mm F2 MFT and the Canon 10-18mm f4.5-5.6 IS STM 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. Canon 10-18mm f4.5-5.6 IS STM is the longer of the two lenses at 72mm. The Venus 7.5mm F2 MFT with a length of 55mm, is 17mm shorter. Besides being longer, the Canon 10-18mm f4.5-5.6 IS STM also has a larger diameter of 75mm compared to the Venus 7.5mm F2 MFT's 50mm 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. Venus 7.5mm F2 MFT weighs 170g, which means it is 70g (29%) lighter than the Canon 10-18mm f4.5-5.6 IS STM which has a weight of 240g.
Lens Mounts
The Venus 7.5mm F2 MFT has the Micro Four Thirds lens mount whereas the Canon 10-18mm f4.5-5.6 IS STM has the Canon EF-S lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Canon T8i, Canon 90D and Canon SL3 for the Canon EF-S Mount.
Focal Range
Venus 7.5mm F2 MFT is a prime lens with fixed focal lenght of 7.5mm which has an effective (full-frame 35mm equivalent) focal range of
16mm when used on a FourThirds format camera.
On the other hand, the Canon 10-18mm f4.5-5.6 IS STM has a focal range of 10-18mm and 1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16-28.8mm when used on a APS-C / DX format camera.
