The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50-150mm F2.8 EX DC OS HSM and the Panasonic Leica 35-100mm f2.8 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 50-150mm F2.8 EX DC OS HSM is the longer of the two lenses at 198mm. The Panasonic Leica 35-100mm f2.8 with a length of 100mm, is 98mm shorter. Besides being longer, the Sigma 50-150mm F2.8 EX DC OS HSM also has a larger diameter of 86mm compared to the Panasonic Leica 35-100mm f2.8'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. Panasonic Leica 35-100mm f2.8 weighs 360g, 73% (990g) lighter than the Sigma 50-150mm F2.8 EX DC OS HSM's weight of 1350g.
Filter Threads
The Sigma 50-150mm F2.8 EX DC OS HSM has a filter size of 77mm whereas the Panasonic Leica 35-100mm f2.8 has a 58mm 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 Sigma 50-150mm F2.8 EX DC OS HSM:
And these are the 58mm filters that we recommend for the Panasonic Leica 35-100mm f2.8:
Lens Mounts
The Sigma 50-150mm F2.8 EX DC OS HSM has the Nikon F (DX) lens mount whereas the Panasonic Leica 35-100mm f2.8 has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Sigma 50-150mm F2.8 EX DC OS HSM is also available in the Canon EF and Sigma SA mounts.
Focal Range
Sigma 50-150mm F2.8 EX DC OS HSM has a focal range of 50-150mm and
3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
75-225mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic Leica 35-100mm f2.8 has a focal range of 35-100mm and 2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 70-200mm when used on a FourThirds format camera.