The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 28-70mm F3.5-5.6 II and the Sony E 18-135mm F3.5-5.6 OSS 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 E 18-135mm F3.5-5.6 OSS is the longer of the two lenses at 88mm. The Sony FE 28-70mm F3.5-5.6 II with a length of 83mm, is 5mm shorter. On the other hand, the Sony FE 28-70mm F3.5-5.6 II has a larger diameter of 73mm compared to the Sony E 18-135mm F3.5-5.6 OSS's 67mm 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 FE 28-70mm F3.5-5.6 II weighs 295g, which means it is 30g (9%) lighter than the Sony E 18-135mm F3.5-5.6 OSS which has a weight of 325g.
Filter Threads
Both the Sony FE 28-70mm F3.5-5.6 II and the Sony E 18-135mm F3.5-5.6 OSS have the same Filter thread size of 55mm.
Below are links to the 55mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sony FE 28-70mm F3.5-5.6 II and the Sony E 18-135mm F3.5-5.6 OSS 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 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.
On the other hand, the Sony E 18-135mm F3.5-5.6 OSS has a focal range of 18-135mm and 7.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-202.5mm when used on a APS-C / DX format camera.
