The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 35mm f1.4 II and the Panasonic 18-40mm F4.5-6.3 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 35mm f1.4 II is the longer of the two lenses at 94mm. The Panasonic 18-40mm F4.5-6.3 with a length of 41mm, is 53mm shorter. Besides being longer, the Sigma 35mm f1.4 II also has a larger diameter of 73mm compared to the Panasonic 18-40mm F4.5-6.3's 68mm diameter.
Below you can find a scaled side-by-side image of Sigma 35mm f1.4 II and Panasonic 18-40mm F4.5-6.3 to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 35mm f1.4 II and the Panasonic 18-40mm F4.5-6.3 Size and Weight 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. Panasonic 18-40mm F4.5-6.3 weighs 155g, 70% (375g) lighter than the Sigma 35mm f1.4 II's weight of 530g.
Filter Threads
The Sigma 35mm f1.4 II has a filter size of 67mm whereas the Panasonic 18-40mm F4.5-6.3 has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sigma 35mm f1.4 II:
And these are the 62mm filters that we recommend for the Panasonic 18-40mm F4.5-6.3:
Lens Mounts
Both the Sigma 35mm f1.4 II and the Panasonic 18-40mm F4.5-6.3 has the same Leica L lens mount . Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE .
Focal Range
Sigma 35mm f1.4 II is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5mm .
On the other hand, the Panasonic 18-40mm F4.5-6.3 has a focal range of 18-40mm and 2.2X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 27 - 60mm .
