The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina 16.5-135mm f3.5-5.6 DX and the Panasonic 14-140mm F4-5.8 OIS 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. Panasonic 14-140mm F4-5.8 OIS is the longer of the two lenses at 84mm. The Tokina 16.5-135mm f3.5-5.6 DX with a length of 78mm, is 6mm shorter. On the other hand, the Tokina 16.5-135mm f3.5-5.6 DX has a larger diameter of 84mm compared to the Panasonic 14-140mm F4-5.8 OIS's 70mm 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 F4-5.8 OIS weighs 460g, 24% (150g) lighter than the Tokina 16.5-135mm f3.5-5.6 DX's weight of 610g.
Filter Threads
The Tokina 16.5-135mm f3.5-5.6 DX has a filter size of 77mm whereas the Panasonic 14-140mm F4-5.8 OIS 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 77mm filters that we recommend you to consider for the Tokina 16.5-135mm f3.5-5.6 DX:
And these are the 62mm filters that we recommend for the Panasonic 14-140mm F4-5.8 OIS:
Lens Mounts
The Tokina 16.5-135mm f3.5-5.6 DX has the Canon EF lens mount whereas the Panasonic 14-140mm F4-5.8 OIS has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Tokina 16.5-135mm f3.5-5.6 DX is also available in the Nikon F (DX) mount.
Focal Range
Tokina 16.5-135mm f3.5-5.6 DX has a focal range of 17-135mm and
7.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27.2-216mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic 14-140mm F4-5.8 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.