The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Lensbaby Sol 45 Mirrorless and the Hartblei 40mm F4 IF TS for their suitability to various photography scenarios:
Size and Weight Comparison
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, which means it is 1278g (82%) lighter than the Hartblei 40mm F4 IF TS which has a weight of 1550g.
Lens Mounts
The Lensbaby Sol 45 Mirrorless has the Sony E lens mount whereas the Hartblei 40mm F4 IF TS has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Lensbaby Sol 45 Mirrorless is also available in the Fujifilm X mount.
Hartblei 40mm F4 IF TS is also available in Canon EF , Pentax KAF and Nikon F (FX) mounts.
Focal Range
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.
On the other hand, the Hartblei 40mm F4 IF TS is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 60mm.