The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 40mm F2 and the Pentax 40mm F2.8 L 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. Nikon Z 40mm F2 is the longer of the two lenses at 46mm. The Pentax 40mm F2.8 L with a length of 15mm, is 31mm shorter. Besides being longer, the Nikon Z 40mm F2 also has a larger diameter of 70mm compared to the Pentax 40mm F2.8 L's 63mm 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 40mm F2.8 L weighs 90g, 47% (80g) lighter than the Nikon Z 40mm F2's weight of 170g.
Filter Threads
The Nikon Z 40mm F2 has a filter size of 52mm whereas the Pentax 40mm F2.8 L 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 52mm filters that we recommend you to consider for the Nikon Z 40mm F2:
And these are the 49mm filters that we recommend for the Pentax 40mm F2.8 L:
Lens Mounts
The Nikon Z 40mm F2 has the Nikon Z lens mount whereas the Pentax 40mm F2.8 L has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Pentax 40mm F2.8 L is also available in Pentax KAF mount.
Focal Range
Both lenses have the same focal range of
40mm but while Nikon Z 40mm F2 has the fastest aperture of
F2, the Pentax 40mm F2.8 L's widest aperture value is
F2.8.
