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 FA 77mm 1.8 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. Pentax FA 77mm 1.8 L is the longer of the two lenses at 48mm. The Nikon Z 40mm F2 with a length of 46mm, is 2mm shorter. On the other hand, the Nikon Z 40mm F2 has a larger diameter of 70mm compared to the Pentax FA 77mm 1.8 L's 64mm 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. Nikon Z 40mm F2 weighs 170g, which means it is 100g (37%) lighter than the Pentax FA 77mm 1.8 L which has a weight of 270g.
Filter Threads
The Nikon Z 40mm F2 has a filter size of 52mm whereas the Pentax FA 77mm 1.8 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 FA 77mm 1.8 L:
Lens Mounts
The Nikon Z 40mm F2 has the Nikon Z lens mount whereas the Pentax FA 77mm 1.8 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.
Focal Range
Nikon Z 40mm F2 is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
60mm.
On the other hand, the Pentax FA 77mm 1.8 L is a prime lens with fixed focal lenght of 77mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 115.5mm.
