The Tamron HA043 lens hood is specifically designed for the Tamron 35-150mm F/2.8-4 Di VC OSD lens, it is designed to prevent side light from falling through the lens.
The effect of parasitic light can lead to significant image degradation (underexposure), such as low image contrast or small optical defects in the form of bright objects, usually in the shape of circles or rings (so-called Lens Flares). With the Tamron HA046 lens hood, there is no risk of unwanted backlighting penetrating the lens to the electronic chip or directly into the viewfinder, ensuring quality photos in every situation. This makes it perfect for shooting landscapes with the sun slightly out of the frame for absolutely perfect panoramic shots.
An often overlooked feature of the sun visor is the mechanical and chemical protection of the lens. It's very easy to smash the front lens barrel on the corner of a table or to smudge it with a greasy hand, especially if you're working in the field. The lens hood protects the front of the lens from rain and other atmospheric influences, against unwanted touch and light impact, which will significantly extend the life of the camera. It is also a practical solution for storing the lens in a bag without a front cap, where you can be sure that the weight of the lens is not distributed on the optics, but on the lens hood.