The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm GF 55mm F1.7R WR and the Sigma 300-800mm F5.6 EX DG HSM 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. Sigma 300-800mm F5.6 EX DG HSM is the longer of the two lenses at 544mm. The Fujifilm GF 55mm F1.7R WR with a length of 99mm, is 445mm shorter. Besides being longer, the Sigma 300-800mm F5.6 EX DG HSM also has a larger diameter of 157mm compared to the Fujifilm GF 55mm F1.7R WR's 95mm 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. Fujifilm GF 55mm F1.7R WR weighs 780g, which means it is 5100g (86%) lighter than the Sigma 300-800mm F5.6 EX DG HSM which has a weight of 5880g.
Filter Threads
The Fujifilm GF 55mm F1.7R WR has a filter size of 77mm whereas the Sigma 300-800mm F5.6 EX DG HSM has a 46mm 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 Fujifilm GF 55mm F1.7R WR:
And these are the 46mm filters that we recommend for the Sigma 300-800mm F5.6 EX DG HSM:
Lens Mounts
The Fujifilm GF 55mm F1.7R WR has the Fujifilm G lens mount whereas the Sigma 300-800mm F5.6 EX DG HSM has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm GFX Eterna 55, Fujifilm GFX 100S II and Fujifilm GFX 100 II for the Fujifilm G Mount and Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Sigma 300-800mm F5.6 EX DG HSM is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Fujifilm GF 55mm F1.7R WR is a prime lens with fixed focal lenght of 55mm.
On the other hand, the Sigma 300-800mm F5.6 EX DG HSM has a focal range of 300-800mm and 2.7X zoom ratio .
