The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujinon MK 18-55mm T2.9 and the Pentax 06 Telephoto 15-45mm 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. Fujinon MK 18-55mm T2.9 is the longer of the two lenses at 206mm. The Pentax 06 Telephoto 15-45mm with a length of 56mm, is 150mm shorter. Besides being longer, the Fujinon MK 18-55mm T2.9 also has a larger diameter of 85mm compared to the Pentax 06 Telephoto 15-45mm's 50mm 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 06 Telephoto 15-45mm weighs 90g, 90% (890g) lighter than the Fujinon MK 18-55mm T2.9's weight of 980g.
Filter Threads
The Fujinon MK 18-55mm T2.9 has a filter size of 82mm whereas the Pentax 06 Telephoto 15-45mm has a 41mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Fujinon MK 18-55mm T2.9:
And these are the 41mm filters that we recommend for the Pentax 06 Telephoto 15-45mm:
Lens Mounts
The Fujinon MK 18-55mm T2.9 has the Sony E lens mount whereas the Pentax 06 Telephoto 15-45mm has the Pentax Q 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 , and for the Pentax Q Mount.
Focal Range
Fujinon MK 18-55mm T2.9 has a focal range of 18-55mm and
3.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
27 - 82.5mm.
On the other hand, the Pentax 06 Telephoto 15-45mm has a focal range of 15-45mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 68.25-204.75mm when used on a 1/1.7" format camera.