The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax DA 300mm F4.0 ED and the Pentax DA 60-250mm F4.0 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 300mm F4.0 ED is the longer of the two lenses at 184mm. The Pentax DA 60-250mm F4.0 ED with a length of 168mm, is 16mm shorter. Besides being longer, the Pentax DA 300mm F4.0 ED also has a larger diameter of 83mm compared to the Pentax DA 60-250mm F4.0 ED's 82mm 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 60-250mm F4.0 ED weighs 1040g, 2% (30g) lighter than the Pentax DA 300mm F4.0 ED's weight of 1070g.
Filter Threads
The Pentax DA 300mm F4.0 ED has a filter size of 77mm whereas the Pentax DA 60-250mm F4.0 ED has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Pentax DA 300mm F4.0 ED:
And these are the 67mm filters that we recommend for the Pentax DA 60-250mm F4.0 ED:
Lens Mounts
Both the Pentax DA 300mm F4.0 ED and the Pentax DA 60-250mm F4.0 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 300mm F4.0 ED is a prime lens with fixed focal lenght of 300mm which has an effective (full-frame 35mm equivalent) focal range of
450mm when used on a APS-C / DX format camera.
On the other hand, the 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.
