The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 18-70mm f3.5-4.5G ED-IF and the Sony FE 28-70mm F3.5-5.6 II 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. Sony FE 28-70mm F3.5-5.6 II is the longer of the two lenses at 83mm. The Nikon 18-70mm f3.5-4.5G ED-IF with a length of 76mm, is 7mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 73mm.
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. Sony FE 28-70mm F3.5-5.6 II weighs 295g, 29% (125g) lighter than the Nikon 18-70mm f3.5-4.5G ED-IF's weight of 420g.
Filter Threads
The Nikon 18-70mm f3.5-4.5G ED-IF has a filter size of 67mm whereas the Sony FE 28-70mm F3.5-5.6 II has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Nikon 18-70mm f3.5-4.5G ED-IF:
And these are the 55mm filters that we recommend for the Sony FE 28-70mm F3.5-5.6 II:
Lens Mounts
The Nikon 18-70mm f3.5-4.5G ED-IF has the Nikon F (DX) lens mount whereas the Sony FE 28-70mm F3.5-5.6 II has the Sony E 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 Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Focal Range
Nikon 18-70mm f3.5-4.5G ED-IF has a focal range of 18-70mm and
3.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-105mm when used on a APS-C / DX format camera.
On the other hand, the Sony FE 28-70mm F3.5-5.6 II has a focal range of 28-70mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 105mm.
