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 Panasonic 7-14mm F4 ASPH 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. Panasonic 7-14mm F4 ASPH is the longer of the two lenses at 83mm. The Venus 7.5mm F2 MFT with a length of 55mm, is 28mm shorter. Besides being longer, the Panasonic 7-14mm F4 ASPH also has a larger diameter of 70mm 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 130g (43%) lighter than the Panasonic 7-14mm F4 ASPH which has a weight of 300g.
Lens Mounts
Both the Venus 7.5mm F2 MFT and the Panasonic 7-14mm F4 ASPH has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3.
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 Panasonic 7-14mm F4 ASPH has a focal range of 7-14mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 14-28mm when used on a FourThirds format camera.
