The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF-S 18-150mm f3.5-6.3 IS and the Pentax 08 Wide Zoom 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. Canon RF-S 18-150mm f3.5-6.3 IS is the longer of the two lenses at 95mm. The Pentax 08 Wide Zoom with a length of 38mm, is 57mm shorter. Besides being longer, the Canon RF-S 18-150mm f3.5-6.3 IS also has a larger diameter of 69mm compared to the Pentax 08 Wide Zoom's 54mm 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. Pentax 08 Wide Zoom weighs 75g, 75% (235g) lighter than the Canon RF-S 18-150mm f3.5-6.3 IS's weight of 310g.
Filter Threads
The Canon RF-S 18-150mm f3.5-6.3 IS has a filter size of 55mm whereas the Pentax 08 Wide Zoom has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Canon RF-S 18-150mm f3.5-6.3 IS:
And these are the 49mm filters that we recommend for the Pentax 08 Wide Zoom:
Lens Mounts
The Canon RF-S 18-150mm f3.5-6.3 IS has the Canon RF lens mount whereas the Pentax 08 Wide Zoom has the Pentax Q 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 , and for the Pentax Q Mount.
Focal Range
Canon RF-S 18-150mm f3.5-6.3 IS has a focal range of 18-150mm and
8.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28.8-240mm when used on a APS-C / DX format camera.
On the other hand, the Pentax 08 Wide Zoom has a focal range of 4-6mm and 1.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 18.2-27.3mm when used on a 1/1.7" format camera.
