The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 100-300mm F4-5.6 II and the Sigma 18-300 F3.5-6.3 DC OS HSM 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 100-300mm F4-5.6 II is the longer of the two lenses at 126mm. The Sigma 18-300 F3.5-6.3 DC OS HSM with a length of 102mm, is 24mm shorter. On the other hand, the Sigma 18-300 F3.5-6.3 DC OS HSM has a larger diameter of 79mm compared to the Panasonic 100-300mm F4-5.6 II's 74mm diameter.
Below you can find a scaled side-by-side image of Panasonic 100-300mm F4-5.6 II and Sigma 18-300 F3.5-6.3 DC OS HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Panasonic 100-300mm F4-5.6 II and the Sigma 18-300 F3.5-6.3 DC OS HSM Size and Weight 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 100-300mm F4-5.6 II weighs 520g, which means it is 65g (11%) lighter than the Sigma 18-300 F3.5-6.3 DC OS HSM which has a weight of 585g.
Filter Threads
The Panasonic 100-300mm F4-5.6 II has a filter size of 67mm whereas the Sigma 18-300 F3.5-6.3 DC OS HSM has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Panasonic 100-300mm F4-5.6 II:
And these are the 72mm filters that we recommend for the Sigma 18-300 F3.5-6.3 DC OS HSM:
Lens Mounts
The Panasonic 100-300mm F4-5.6 II has the Micro Four Thirds lens mount whereas the Sigma 18-300 F3.5-6.3 DC OS HSM has the Nikon F (DX) 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 Nikon D3500 , Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Canon EF , Pentax KAF3 , Sigma SA and Sony Alpha mounts.
Focal Range
Panasonic 100-300mm F4-5.6 II has a focal range of 100-300mm and
3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
200-600mm when used on a FourThirds format camera.
On the other hand, the Sigma 18-300 F3.5-6.3 DC OS HSM has a focal range of 18-300mm and 16.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-450mm when used on a APS-C / DX format camera.
