The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Lensbaby Sol 22 and the Sigma 19mm F2.8 EX DN 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 19mm F2.8 EX DN is the longer of the two lenses at 46mm. The Lensbaby Sol 22 with a length of 38mm, is 8mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 61mm.
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. Sigma 19mm F2.8 EX DN weighs 140g, 2% (4g) lighter than the Lensbaby Sol 22's weight of 144g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Micro Four Thirds Mount for size comparison purposes.
Wideangle Lenses in Micro Four Thirds Mount for Size Comparison
Lens Mounts
Both the Lensbaby Sol 22 and the Sigma 19mm F2.8 EX DN has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-1 II, Panasonic G9 II and OM System OM-5.
Sigma 19mm F2.8 EX DN is also available in Sony E mount.
Focal Range
Lensbaby Sol 22 is a prime lens with fixed focal lenght of 22mm which has an effective (full-frame 35mm equivalent) focal range of
44mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 19mm F2.8 EX DN is a prime lens with fixed focal lenght of 19mm which has an effective (full-frame 35mm equivalent) focal range of 28.5mm when used on a APS-C / DX format camera.