The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F2.8 EX DG Macro and the Lensbaby Sol 45 DSLR 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 50mm F2.8 EX DG Macro is the longer of the two lenses at 67mm. The Lensbaby Sol 45 DSLR with a length of 39mm, is 28mm shorter. On the other hand, the Lensbaby Sol 45 DSLR has a larger diameter of 73mm compared to the Sigma 50mm F2.8 EX DG Macro's 71mm 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 Sol 45 DSLR weighs 144g, 55% (176g) lighter than the Sigma 50mm F2.8 EX DG Macro's weight of 320g.
Lens Mounts
Both the Sigma 50mm F2.8 EX DG Macro and the Lensbaby Sol 45 DSLR has the same Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Sigma 50mm F2.8 EX DG Macro is also available in Canon EF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Lensbaby Sol 45 DSLR is also available in Canon EF , Fujifilm X, Nikon F (FX) and Sony Alpha mounts.
Focal Range
Sigma 50mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm.
On the other hand, the Lensbaby Sol 45 DSLR is a prime lens with fixed focal lenght of 45mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 67.5mm.