The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Kamlan 50mm F1.1 II and the Lensbaby Velvet 56 for their suitability to various photography scenarios:
Size and Weight Comparison
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Lensbaby Velvet 56 weighs 400g, 33% (200g) lighter than the Kamlan 50mm F1.1 II's weight of 600g.
Both Kamlan 50mm F1.1 II has the Canon EF-M lens mount whereas the Lensbaby Velvet 56 has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Canon EF-M Mount and Sony A7R V, Sony FX30 and Sony A7 IV for the Sony E Mount.
Kamlan 50mm F1.1 II is also available in Fujifilm X , Micro Four Thirds and Sony E mounts.
Lensbaby Velvet 56 is also available in Canon EF , Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF3, Samsung NX and Sony Alpha mounts.
Kamlan 50mm F1.1 II is a prime lens with fixed focal lenght of 50mm which has a 35mm equivalent focal range of 75mm when used on a APS-C / DX format camera. Lensbaby Velvet 56 is a prime lens with fixed focal lenght of 56mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 84mm.