The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 17-50mm f4 Di III VXD and the Tamron 17-35mm F2.8-4 Di OSD 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 17-50mm f4 Di III VXD is the longer of the two lenses at 114mm. The Tamron 17-35mm F2.8-4 Di OSD with a length of 93mm, is 21mm shorter. On the other hand, the Tamron 17-35mm F2.8-4 Di OSD has a larger diameter of 84mm compared to the Tamron 17-50mm f4 Di III VXD's 75mm diameter.
Below you can find a scaled side-by-side image of Tamron 17-50mm f4 Di III VXD and Tamron 17-35mm F2.8-4 Di OSD to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 17-50mm f4 Di III VXD and the Tamron 17-35mm F2.8-4 Di OSD 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.
Filter Threads
The Tamron 17-50mm f4 Di III VXD has a filter size of 67mm whereas the Tamron 17-35mm F2.8-4 Di OSD has a 77mm 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 Tamron 17-50mm f4 Di III VXD:
And these are the 77mm filters that we recommend for the Tamron 17-35mm F2.8-4 Di OSD:
Lens Mounts
The Tamron 17-50mm f4 Di III VXD has the Sony E lens mount whereas the Tamron 17-35mm F2.8-4 Di OSD has the Canon EF lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Nikon F (FX) mount.
Focal Range
Tamron 17-50mm f4 Di III VXD has a focal range of 17-50mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5 - 75mm .
On the other hand, the Tamron 17-35mm F2.8-4 Di OSD has a focal range of 17-35mm and 2.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 27.2 - 56mm .
