The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 18-135mm F3.5-5.6 OSS and the Tamron 18-200mm f3.5-6.3 III VC 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 18-200mm f3.5-6.3 III VC is the longer of the two lenses at 97mm. The Sony E 18-135mm F3.5-5.6 OSS with a length of 88mm, is 9mm shorter. Besides being longer, the Tamron 18-200mm f3.5-6.3 III VC also has a larger diameter of 68mm compared to the Sony E 18-135mm F3.5-5.6 OSS's 67mm 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. Sony E 18-135mm F3.5-5.6 OSS weighs 325g, which means it is 135g (29%) lighter than the Tamron 18-200mm f3.5-6.3 III VC which has a weight of 460g.
Below you can find the dimension and weight table of the SuperZoom Lenses in Sony E Mount for size comparison purposes.
Superzoom Lenses in Sony E Mount for Size Comparison
Filter Threads
The Sony E 18-135mm F3.5-5.6 OSS has a filter size of 55mm whereas the Tamron 18-200mm f3.5-6.3 III VC has a 62mm 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 Sony E 18-135mm F3.5-5.6 OSS:
And these are the 62mm filters that we recommend for the Tamron 18-200mm f3.5-6.3 III VC:
Lens Mounts
Both the Sony E 18-135mm F3.5-5.6 OSS and the Tamron 18-200mm f3.5-6.3 III VC has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Focal Range
Sony E 18-135mm F3.5-5.6 OSS has a focal range of 18-135mm and
7.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-202.5mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 18-200mm f3.5-6.3 III VC has a focal range of 18-200mm and 11.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-300mm when used on a APS-C / DX format camera.
