The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50-200mm F4-5.6 DC OS HSM and the Pentax 02 Standard 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. Sigma 50-200mm F4-5.6 DC OS HSM is the longer of the two lenses at 102mm. The Pentax 02 Standard Zoom with a length of 48mm, is 54mm shorter. Besides being longer, the Sigma 50-200mm F4-5.6 DC OS HSM also has a larger diameter of 74mm compared to the Pentax 02 Standard Zoom's 49mm 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 02 Standard Zoom weighs 96g, 77% (324g) lighter than the Sigma 50-200mm F4-5.6 DC OS HSM's weight of 420g.
Filter Threads
The Sigma 50-200mm F4-5.6 DC OS HSM has a filter size of 55mm whereas the Pentax 02 Standard Zoom 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 55mm filters that we recommend you to consider for the Sigma 50-200mm F4-5.6 DC OS HSM:
And these are the 41mm filters that we recommend for the Pentax 02 Standard Zoom:
Lens Mounts
The Sigma 50-200mm F4-5.6 DC OS HSM has the Pentax KAF3 lens mount whereas the Pentax 02 Standard Zoom has the Pentax Q lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF3 Mount and , and for the Pentax Q Mount.
Sigma 50-200mm F4-5.6 DC OS HSM is also available in the Canon EF , Sony Alpha, Sigma SA and Nikon F (DX) mounts.
Focal Range
Sigma 50-200mm F4-5.6 DC OS HSM has a focal range of 50-200mm and
4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
75-300mm when used on a APS-C / DX format camera.
On the other hand, the Pentax 02 Standard Zoom has a focal range of 5-15mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 22.75-68.25mm when used on a 1/1.7" format camera.
