The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7artisans 85mm f1.8 AF and the Sigma 18-300 F3.5-6.3 DC OS 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 18-300 F3.5-6.3 DC OS HSM is the longer of the two lenses at 102mm. The 7artisans 85mm f1.8 AF with a length of 96mm, is 6mm shorter. Besides being longer, the Sigma 18-300 F3.5-6.3 DC OS HSM also has a larger diameter of 79mm compared to the 7artisans 85mm f1.8 AF's 72mm diameter.
Below you can find a scaled side-by-side image of 7artisans 85mm f1.8 AF and Sigma 18-300 F3.5-6.3 DC OS HSM to get a better idea of how their sizes compare in real life.
Comparison image of the 7artisans 85mm f1.8 AF and the Sigma 18-300 F3.5-6.3 DC OS HSM Size and Weight 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. 7artisans 85mm f1.8 AF weighs 443g, which means it is 142g (24%) lighter than the Sigma 18-300 F3.5-6.3 DC OS HSM which has a weight of 585g.
Filter Threads
The 7artisans 85mm f1.8 AF has a filter size of 62mm whereas the Sigma 18-300 F3.5-6.3 DC OS HSM 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 62mm filters that we recommend you to consider for the 7artisans 85mm f1.8 AF:
And these are the 72mm filters that we recommend for the Sigma 18-300 F3.5-6.3 DC OS HSM:
Lens Mounts
The 7artisans 85mm f1.8 AF has the Leica L lens mount whereas the Sigma 18-300 F3.5-6.3 DC OS HSM has the Nikon F (DX) 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 D3500 , Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Sony E and Nikon Z mounts.
Canon EF , Pentax KAF3 , Sigma SA and Sony Alpha mounts.
Focal Range
7artisans 85mm f1.8 AF is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm .
On the other hand, the Sigma 18-300 F3.5-6.3 DC OS HSM has a focal range of 18-300mm and 16.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-450mm when used on a APS-C / DX format camera.
