The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 18-50mm F2.8 DC DN C and the Tamron 35mm F1.8 Di VC USD 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 35mm F1.8 Di VC USD is the longer of the two lenses at 81mm. The Sigma 18-50mm F2.8 DC DN C with a length of 75mm, is 6mm shorter. Besides being longer, the Tamron 35mm F1.8 Di VC USD also has a larger diameter of 80mm compared to the Sigma 18-50mm F2.8 DC DN C's 65mm diameter.
Below you can find a scaled side-by-side image of Sigma 18-50mm F2.8 DC DN C and Tamron 35mm F1.8 Di VC USD to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 18-50mm F2.8 DC DN C and the Tamron 35mm F1.8 Di VC USD 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 18-50mm F2.8 DC DN C weighs 290g, which means it is 160g (35%) lighter than the Tamron 35mm F1.8 Di VC USD which has a weight of 450g.
Filter Threads
The Sigma 18-50mm F2.8 DC DN C has a filter size of 55mm whereas the Tamron 35mm F1.8 Di VC USD has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 18-50mm F2.8 DC DN C:
And these are the 67mm filters that we recommend for the Tamron 35mm F1.8 Di VC USD:
Lens Mounts
The Sigma 18-50mm F2.8 DC DN C has the Sony E lens mount whereas the Tamron 35mm F1.8 Di VC USD has the Sony Alpha lens mount . Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount and Sony A99 II , Sony A68 and Sony A77 II for the Sony Alpha Mount.
Leica L and Fujifilm X mounts.
Canon EF and Nikon F (FX) mounts.
Focal Range
Sigma 18-50mm F2.8 DC DN C has a focal range of 18-50mm and
2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-75mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 35mm F1.8 Di VC USD is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm .
