The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony DT 16-50mm F2.8 SSM and the Sony 28-75mm F2.8 SAM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sony 28-75mm F2.8 SAM is the longer of the two lenses at 98mm. The Sony DT 16-50mm F2.8 SSM with a length of 88mm, is 10mm shorter. On the other hand, the Sony DT 16-50mm F2.8 SSM has a larger diameter of 81mm compared to the Sony 28-75mm F2.8 SAM's 78mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony 28-75mm F2.8 SAM weighs 565g, 2% (12g) lighter than the Sony DT 16-50mm F2.8 SSM's weight of 577g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Sony Alpha Mount for size comparison purposes.
Standard Zoom Lenses in Sony Alpha Mount for Size Comparison
Both the Sony DT 16-50mm F2.8 SSM and the Sony 28-75mm F2.8 SAM has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A68, Sony A77 II and Sony A58.
Sony DT 16-50mm F2.8 SSM has a focal range of 16-50mm and 3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-75mm when used on a APS-C / DX format camera. Sony 28-75mm F2.8 SAM has a focal range of 28-75mm and 2.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 112.5mm.