The type of photography that you are planning to use is an important decision factor. Here we have evaluated the PENTAX28-105mm F3.5-5.6 WR and the Lensbaby Velvet 56 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. PENTAX28-105mm F3.5-5.6 WR is the longer of the two lenses at 87mm. The Lensbaby Velvet 56 with a length of 86mm, is 1mm shorter. Besides being longer, the PENTAX28-105mm F3.5-5.6 WR also has a larger diameter of 73mm compared to the Lensbaby Velvet 56's 72mm diameter.
Below you can find a scaled side-by-side image of PENTAX28-105mm F3.5-5.6 WR and Lensbaby Velvet 56 to get a better idea of how their sizes compare in real life.
Comparison image of the PENTAX28-105mm F3.5-5.6 WR and the Lensbaby Velvet 56 Size and Weight 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 Velvet 56 weighs 400g, 9% (40g) lighter than the PENTAX28-105mm F3.5-5.6 WR's weight of 440g.
Filter Threads
Both the PENTAX28-105mm F3.5-5.6 WR and the Lensbaby Velvet 56 have the same Filter thread size of 62mm .
Below are links to the 62mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the PENTAX28-105mm F3.5-5.6 WR and the Lensbaby Velvet 56 has the same Pentax KAF3 lens mount . Some of the latest released cameras that are compatible with the Pentax KAF3 lenses are Pentax K-3 III Mono , Pentax KF and Pentax K-3 III .
Canon EF , Fujifilm X , Micro Four Thirds , Nikon F (FX) , Samsung NX , Sony Alpha and Sony E mounts.
Focal Range
PENTAX28-105mm F3.5-5.6 WR has a focal range of 28-105mm and
3.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 157.5mm .
On the other hand, the 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 a 35mm (FF) equivalent of 84mm .
