The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 7-14mm F4 ASPH and the Olympus ED 12-40mm f2.8 PRO 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. Olympus ED 12-40mm f2.8 PRO is the longer of the two lenses at 84mm. The Panasonic 7-14mm F4 ASPH with a length of 83mm, is 1mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 70mm.
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. Panasonic 7-14mm F4 ASPH weighs 300g, which means it is 82g (21%) lighter than the Olympus ED 12-40mm f2.8 PRO which has a weight of 382g.
Lens Mounts
Both the Panasonic 7-14mm F4 ASPH and the Olympus ED 12-40mm f2.8 PRO 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
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.
On the other hand, the Olympus ED 12-40mm f2.8 PRO has a focal range of 12-40mm and 3.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-80mm when used on a FourThirds format camera.
