The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 70-300mm F4-5.6 DG OS and the Panasonic 14-140mm F3.5-5.6 O.I.S 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 70-300mm F4-5.6 DG OS is the longer of the two lenses at 126mm. The Panasonic 14-140mm F3.5-5.6 O.I.S with a length of 75mm, is 51mm shorter. Besides being longer, the Sigma 70-300mm F4-5.6 DG OS also has a larger diameter of 77mm compared to the Panasonic 14-140mm F3.5-5.6 O.I.S's 67mm 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. Panasonic 14-140mm F3.5-5.6 O.I.S weighs 265g, 56% (345g) lighter than the Sigma 70-300mm F4-5.6 DG OS's weight of 610g.
Filter Threads
Both the Sigma 70-300mm F4-5.6 DG OS and the Panasonic 14-140mm F3.5-5.6 O.I.S have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 70-300mm F4-5.6 DG OS has the Canon EF lens mount whereas the Panasonic 14-140mm F3.5-5.6 O.I.S has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Sigma 70-300mm F4-5.6 DG OS is also available in the Nikon F (FX) , Pentax KAF3, Sony Alpha and Sigma SA mounts.
Focal Range
Sigma 70-300mm F4-5.6 DG OS has a focal range of 70-300mm and
4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
112 - 480mm.
On the other hand, the Panasonic 14-140mm F3.5-5.6 O.I.S has a focal range of 14-140mm and 10.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28-280mm when used on a FourThirds format camera.
