The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 70-350mm F4.5-6.3 G and the Sony 70-400mm F4-5.6 G SSM 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 70-400mm F4-5.6 G SSM II is the longer of the two lenses at 196mm. The Sony E 70-350mm F4.5-6.3 G with a length of 142mm, is 54mm shorter. Besides being longer, the Sony 70-400mm F4-5.6 G SSM II also has a larger diameter of 95mm compared to the Sony E 70-350mm F4.5-6.3 G's 77mm 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. Sony E 70-350mm F4.5-6.3 G weighs 625g, which means it is 875g (58%) lighter than the Sony 70-400mm F4-5.6 G SSM II which has a weight of 1500g.
Filter Threads
The Sony E 70-350mm F4.5-6.3 G has a filter size of 67mm whereas the Sony 70-400mm F4-5.6 G SSM II has a 77mm 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 Sony E 70-350mm F4.5-6.3 G:
And these are the 77mm filters that we recommend for the Sony 70-400mm F4-5.6 G SSM II:
Lens Mounts
The Sony E 70-350mm F4.5-6.3 G has the Sony E lens mount whereas the Sony 70-400mm F4-5.6 G SSM II has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Focal Range
Sony E 70-350mm F4.5-6.3 G has a focal range of 70-350mm and
5.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
105-525mm when used on a APS-C / DX format camera.
On the other hand, the Sony 70-400mm F4-5.6 G SSM II has a focal range of 70-400mm and 5.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 600mm.