The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic 14-140mm F3.5-5.6 II OIS and the Tamron 14-150mm f3.5-5.8 III 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 14-150mm f3.5-5.8 III is the longer of the two lenses at 80mm. The Panasonic 14-140mm F3.5-5.6 II OIS with a length of 75mm, is 5mm shorter. On the other hand, the Panasonic 14-140mm F3.5-5.6 II OIS has a larger diameter of 67mm 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. Panasonic 14-140mm F3.5-5.6 II OIS weighs 265g, which means it is 20g (7%) lighter than the Tamron 14-150mm f3.5-5.8 III which has a weight of 285g.
Below you can find the dimension and weight table of the SuperZoom Lenses in Micro Four Thirds Mount for size comparison purposes.
Superzoom Lenses in Micro Four Thirds Mount for Size Comparison
Filter Threads
The Panasonic 14-140mm F3.5-5.6 II OIS has a filter size of 58mm whereas the Tamron 14-150mm f3.5-5.8 III has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Panasonic 14-140mm F3.5-5.6 II OIS:
And these are the 52mm filters that we recommend for the Tamron 14-150mm f3.5-5.8 III:
Lens Mounts
Both the Panasonic 14-140mm F3.5-5.6 II OIS and the Tamron 14-150mm f3.5-5.8 III has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-1 II, Panasonic G9 II and OM System OM-5.
Focal Range
Panasonic 14-140mm F3.5-5.6 II OIS has a focal range of 14-140mm and
10.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28-280mm when used on a FourThirds format camera.
On the other hand, the 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.