The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 56mm F1.4 C and the Lensbaby Sol 45 Mirrorless 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. Lensbaby Sol 45 Mirrorless is the longer of the two lenses at 65mm. The Sigma 56mm F1.4 C with a length of 60mm, is 5mm shorter. Besides being longer, the Lensbaby Sol 45 Mirrorless also has a larger diameter of 73mm compared to the Sigma 56mm F1.4 C'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. Lensbaby Sol 45 Mirrorless weighs 272g, 2% (8g) lighter than the Sigma 56mm F1.4 C's weight of 280g.
Lens Mounts
The Sigma 56mm F1.4 C has the Canon RF lens mount whereas the Lensbaby Sol 45 Mirrorless has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R50 V, Canon R100 and Canon R50 for the Canon RF Mount and Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Sigma 56mm F1.4 C is also available in the Fujifilm X and Nikon Z mounts.
Lensbaby Sol 45 Mirrorless is also available in Fujifilm X mount.
Focal Range
Sigma 56mm F1.4 C is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of
89.6mm when used on a APS-C / DX format camera.
On the other hand, the Lensbaby Sol 45 Mirrorless 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.
