The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 400-800mm F6.3-8 and the Sony E 70-350mm F4.5-6.3 G 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 400-800mm F6.3-8 is the longer of the two lenses at 346mm. The Sony E 70-350mm F4.5-6.3 G with a length of 142mm, is 204mm shorter. Besides being longer, the Sony FE 400-800mm F6.3-8 also has a larger diameter of 120mm compared to the Sony E 70-350mm F4.5-6.3 G's 77mm diameter.
Below you can find a scaled side-by-side image of Sony FE 400-800mm F6.3-8 and Sony E 70-350mm F4.5-6.3 G to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 400-800mm F6.3-8 and the Sony E 70-350mm F4.5-6.3 G 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. Sony E 70-350mm F4.5-6.3 G weighs 625g, 74% (1850g) lighter than the Sony FE 400-800mm F6.3-8's weight of 2475g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Sony E Mount for size comparison purposes.
Super Telephoto Sony E Mount
Filter Threads
The Sony FE 400-800mm F6.3-8 has a filter size of 105mm whereas the Sony E 70-350mm F4.5-6.3 G has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 105mm filters that we recommend you to consider for the Sony FE 400-800mm F6.3-8:
And these are the 67mm filters that we recommend for the Sony E 70-350mm F4.5-6.3 G:
Lens Mounts
Both the Sony FE 400-800mm F6.3-8 and the Sony E 70-350mm F4.5-6.3 G has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Focal Range
Sony FE 400-800mm F6.3-8 has a focal range of 400-800mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
600 - 1200mm .
On the other hand, the 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.
