The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 18-300mm F3.5-6.3 and the Sigma 16-300mm f3.5-6.7 C 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. Tamron 18-300mm F3.5-6.3 is the longer of the two lenses at 126mm. The Sigma 16-300mm f3.5-6.7 C with a length of 123mm, is 3mm shorter. Besides being longer, the Tamron 18-300mm F3.5-6.3 also has a larger diameter of 76mm compared to the Sigma 16-300mm f3.5-6.7 C's 73mm diameter.
Below you can find a scaled side-by-side image of Tamron 18-300mm F3.5-6.3 and Sigma 16-300mm f3.5-6.7 C to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 18-300mm F3.5-6.3 and the Sigma 16-300mm f3.5-6.7 C 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 16-300mm f3.5-6.7 C weighs 615g, 0% (5g) lighter than the Tamron 18-300mm F3.5-6.3's weight of 620g.
Filter Threads
Both the Tamron 18-300mm F3.5-6.3 and the Sigma 16-300mm f3.5-6.7 C have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tamron 18-300mm F3.5-6.3 has the Canon RF lens mount whereas the Sigma 16-300mm f3.5-6.7 C has the Sony E lens mount . Some of the latest released cameras that are compatible with these mounts are Canon R50 V , Canon R100 and Canon R50 for the Canon RF Mount and Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount.
Tamron 18-300mm F3.5-6.3 is also available in the Nikon Z mount.
Sigma 16-300mm f3.5-6.7 C is also available in Leica L , Canon RF and Fujifilm X mounts.
Focal Range
Tamron 18-300mm F3.5-6.3 has a focal range of 18-300mm and
16.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28.8-480mm when used on a APS-C / DX format camera.
On the other hand, the 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 24-450mm when used on a APS-C / DX format camera.