The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 28-45mm F1.8 and the Nikon 135mm f2D DC 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 28-45mm F1.8 is the longer of the two lenses at 151mm. The Nikon 135mm f2D DC with a length of 120mm, is 31mm shorter. Besides being longer, the Sigma 28-45mm F1.8 also has a larger diameter of 88mm compared to the Nikon 135mm f2D DC's 79mm 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. Nikon 135mm f2D DC weighs 815g, 15% (145g) lighter than the Sigma 28-45mm F1.8's weight of 960g.
Filter Threads
The Sigma 28-45mm F1.8 has a filter size of 82mm whereas the Nikon 135mm f2D DC has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Sigma 28-45mm F1.8:
And these are the 72mm filters that we recommend for the Nikon 135mm f2D DC:
Lens Mounts
The Sigma 28-45mm F1.8 has the Leica L lens mount whereas the Nikon 135mm f2D DC has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 28-45mm F1.8 is also available in the Sony E mount.
Focal Range
Sigma 28-45mm F1.8 has a focal range of 28-45mm and
1.6X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 67.5mm.
On the other hand, the Nikon 135mm f2D DC is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 202.5mm.