Comparison between the Irix 15mm f/2.4 Blackstone and the Rokinon (Samyang) 14mm T3.1 VDSLR IF ED AS UMC lenses is analyzed in this article. The author, a landscape photographer, reviews the lenses based on their optical aspects and speed. The physical differences between the two lenses are also compared, including volume and weight. The Irix lens is bulkier and heavier than the Samyang, but the difference in weight is not significant. The article includes photographs taken with both lenses and aims to help readers draw their own conclusions.

Learn how to maximize the sharpness of your photos with a lot of depth, such as landscape shots, by understanding and finding the hyperfocal distance. Fortunately, there are tools available to find it quickly and easily, such as hyperfocal distance charts and calculators, or depth of field scales on high-end camera lenses. You can even use the same scale to quickly set your focus at the hyperfocal distance for a given aperture, making it a convenient and time-saving tool for amateur photographers.