The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Brightin 11mm F2.8 and the Sigma 10-18mm F2.8 DC DN C 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 10-18mm F2.8 DC DN C is the longer of the two lenses at 64mm. The Brightin 11mm F2.8 with a length of 61mm, is 3mm shorter. Besides being longer, the Sigma 10-18mm F2.8 DC DN C also has a larger diameter of 72mm compared to the Brightin 11mm F2.8's 65mm 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. Sigma 10-18mm F2.8 DC DN C weighs 255g, 25% (85g) lighter than the Brightin 11mm F2.8's weight of 340g.
Lens Mounts
Both the Brightin 11mm F2.8 and the Sigma 10-18mm F2.8 DC DN C 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.
Brightin 11mm F2.8 is also available in the Sony E , Nikon Z and Leica L mounts.
Sigma 10-18mm F2.8 DC DN C is also available in Sony E , Leica L and Fujifilm X mounts.
Focal Range
Brightin 11mm F2.8 is a prime lens with fixed focal lenght of 11mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
16.5mm.
On the other hand, the Sigma 10-18mm F2.8 DC DN C has a focal range of 10-18mm and 1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16-28.8mm when used on a APS-C / DX format camera.
