The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax DA 60-250mm F4.0 ED and the Pentax DA 50-135mm F2.8 ED 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. Pentax DA 60-250mm F4.0 ED is the longer of the two lenses at 168mm. The Pentax DA 50-135mm F2.8 ED with a length of 136mm, is 32mm shorter. Besides being longer, the Pentax DA 60-250mm F4.0 ED also has a larger diameter of 82mm compared to the Pentax DA 50-135mm F2.8 ED's 77mm 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 DA 50-135mm F2.8 ED weighs 685g, 34% (355g) lighter than the Pentax DA 60-250mm F4.0 ED's weight of 1040g.
Filter Threads
Both the Pentax DA 60-250mm F4.0 ED and the Pentax DA 50-135mm F2.8 ED have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Pentax DA 60-250mm F4.0 ED and the Pentax DA 50-135mm F2.8 ED has the same Pentax KAF2 lens mount. Some of the latest released cameras that are compatible with the Pentax KAF2 lenses are , and .
Focal Range
Pentax DA 60-250mm F4.0 ED has a focal range of 60-250mm and
4.2X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
90-375mm when used on a APS-C / DX format camera.
On the other hand, the Pentax DA 50-135mm F2.8 ED has a focal range of 50-135mm and 2.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-202.5mm when used on a APS-C / DX format camera.
