The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 11-20mm F2.8 X and the Tamron 10-24mm f3.5-4.5 II LD 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 11-20mm F2.8 X is the longer of the two lenses at 86mm. The Tamron 10-24mm f3.5-4.5 II LD with a length of 84mm, is 2mm shorter. On the other hand, the Tamron 10-24mm f3.5-4.5 II LD has a larger diameter of 83mm compared to the Tamron 11-20mm F2.8 X's 73mm diameter.
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. Tamron 11-20mm F2.8 X weighs 335g, which means it is 71g (17%) lighter than the Tamron 10-24mm f3.5-4.5 II LD which has a weight of 406g.
Filter Threads
The Tamron 11-20mm F2.8 X has a filter size of 67mm whereas the Tamron 10-24mm f3.5-4.5 II LD 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 11-20mm F2.8 X:
And these are the 77mm filters that we recommend for the Tamron 10-24mm f3.5-4.5 II LD:
Lens Mounts
The Tamron 11-20mm F2.8 X has the Fujifilm X lens mount whereas the Tamron 10-24mm f3.5-4.5 II LD has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Tamron 10-24mm f3.5-4.5 II LD is also available in Canon EF , Sony Alpha, Pentax KAF and Canon EF mounts.
Focal Range
Tamron 11-20mm F2.8 X has a focal range of 11-20mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
16.5-30mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 10-24mm f3.5-4.5 II LD has a focal range of 10-24mm and 2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-36mm when used on a APS-C / DX format camera.