The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 14-150mm f3.5-5.8 III 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 Tamron 14-150mm f3.5-5.8 III with a length of 80mm, is 17mm shorter. Besides being longer, the Tamron 18-200mm f3.5-6.3 III VC also has a larger diameter of 68mm compared to the Tamron 14-150mm f3.5-5.8 III's 64mm 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 14-150mm f3.5-5.8 III weighs 285g, which means it is 175g (38%) lighter than the Tamron 18-200mm f3.5-6.3 III VC which has a weight of 460g.
Filter Threads
The Tamron 14-150mm f3.5-5.8 III has a filter size of 52mm 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 52mm filters that we recommend you to consider for the Tamron 14-150mm f3.5-5.8 III:
And these are the 62mm filters that we recommend for the Tamron 18-200mm f3.5-6.3 III VC:
Lens Mounts
The Tamron 14-150mm f3.5-5.8 III has the Micro Four Thirds lens mount whereas the Tamron 18-200mm f3.5-6.3 III VC has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Focal Range
Tamron 14-150mm f3.5-5.8 III has a focal range of 14-150mm and
10.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28-300mm when used on a FourThirds 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.
