The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16-300mm f3.5-6.7 C 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. Sigma 16-300mm f3.5-6.7 C is the longer of the two lenses at 124mm. The Sigma 18-300 F3.5-6.3 DC OS HSM with a length of 102mm, is 22mm 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 Sigma 16-300mm f3.5-6.7 C's 74mm diameter.
Below you can find a scaled side-by-side image of Sigma 16-300mm f3.5-6.7 C 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 Sigma 16-300mm f3.5-6.7 C 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. Sigma 18-300 F3.5-6.3 DC OS HSM weighs 585g, 4% (30g) lighter than the Sigma 16-300mm f3.5-6.7 C's weight of 615g.
Filter Threads
The Sigma 16-300mm f3.5-6.7 C 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 Sigma 16-300mm f3.5-6.7 C:
And these are the 72mm filters that we recommend for the Sigma 18-300 F3.5-6.3 DC OS HSM:
Lens Mounts
The Sigma 16-300mm f3.5-6.7 C has the Fujifilm X lens mount whereas the Sigma 18-300 F3.5-6.3 DC OS HSM has the Sony Alpha lens mount . Some of the latest released cameras that are compatible with these mounts are Sony A68 , Sony A77 II and Sony A58 for the Sony Alpha Mount.
Sony E , Leica L and Canon RF mounts.
Canon EF , Nikon F (DX) , Pentax KAF3 and Sigma SA mounts.
Focal Range
Sigma 16-300mm f3.5-6.7 C has a focal range of 16-300mm and
18.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
25.6-480mm when used on a APS-C / DX 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.
