The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 105mm F2 and the Sony 300mm F2.8 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 300mm F2.8 G SSM II is the longer of the two lenses at 243mm. The Venus 105mm F2 with a length of 99mm, is 144mm shorter. Besides being longer, the Sony 300mm F2.8 G SSM II also has a larger diameter of 122mm compared to the Venus 105mm F2's 76mm 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. Venus 105mm F2 weighs 745g, which means it is 1555g (67%) lighter than the Sony 300mm F2.8 G SSM II which has a weight of 2300g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Sony Alpha Mount for size comparison purposes.
Telephoto Lenses in Sony Alpha Mount for Size Comparison
Lens Mounts
Both the Venus 105mm F2 and the Sony 300mm F2.8 G SSM II has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Venus 105mm F2 is also available in the Sony E , Canon EF, Nikon F (FX) and Pentax KAF2 mounts.
Focal Range
Venus 105mm F2 is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
157.5mm.
On the other hand, the Sony 300mm F2.8 G SSM II is a prime lens with fixed focal lenght of 300mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 450mm.
