The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Laowa 17mm f4 Shift and the Canon RF 15-35mm F2.8L IS USM 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. Canon RF 15-35mm F2.8L IS USM is the longer of the two lenses at 127mm. The Laowa 17mm f4 Shift with a length of 111mm, is 16mm shorter. On the other hand, the Laowa 17mm f4 Shift has a larger diameter of 93mm compared to the Canon RF 15-35mm F2.8L IS USM's 89mm 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. Laowa 17mm f4 Shift weighs 770g, which means it is 70g (8%) lighter than the Canon RF 15-35mm F2.8L IS USM which has a weight of 840g.
Filter Threads
The Laowa 17mm f4 Shift has a filter size of 86mm whereas the Canon RF 15-35mm F2.8L IS USM has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 86mm filters that we recommend you to consider for the Laowa 17mm f4 Shift:
And these are the 82mm filters that we recommend for the Canon RF 15-35mm F2.8L IS USM:
Lens Mounts
Both the Laowa 17mm f4 Shift and the Canon RF 15-35mm F2.8L IS USM has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R6 V, Canon R6 III and Canon C50.
Laowa 17mm f4 Shift is also available in the Sony E , Nikon Z and Leica L mounts.
Focal Range
Laowa 17mm f4 Shift is a prime lens with fixed focal lenght of 17mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5mm.
On the other hand, the Canon RF 15-35mm F2.8L IS USM has a focal range of 15-35mm and 2.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 24 - 56mm.
