The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Lensbaby Burnside 35 and the Sigma 24-70mm F2.8 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. Sigma 24-70mm F2.8 II is the longer of the two lenses at 122mm. The Lensbaby Burnside 35 with a length of 70mm, is 52mm shorter. Besides being longer, the Sigma 24-70mm F2.8 II also has a larger diameter of 88mm compared to the Lensbaby Burnside 35's 70mm 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. Lensbaby Burnside 35 weighs 374g, which means it is 361g (49%) lighter than the Sigma 24-70mm F2.8 II which has a weight of 735g.
Filter Threads
The Lensbaby Burnside 35 has a filter size of 62mm whereas the Sigma 24-70mm F2.8 II has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Lensbaby Burnside 35:
And these are the 82mm filters that we recommend for the Sigma 24-70mm F2.8 II:
Lens Mounts
Both the Lensbaby Burnside 35 and the Sigma 24-70mm F2.8 II 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.
Lensbaby Burnside 35 is also available in the Canon EF , Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF, Samsung NX and Sony Alpha mounts.
Sigma 24-70mm F2.8 II is also available in Leica L mount.
Focal Range
Lensbaby Burnside 35 is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5mm.
On the other hand, the Sigma 24-70mm F2.8 II has a focal range of 24-70mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36 - 105mm.
