The Sony ALC-SH151 Lens Hood is compatible with Sony SEL100400GM Lens. If the original hood is damaged or broken, users can easily replace it with this one. This lens hood prevents unwanted light from entering the front lens effectively. It also prevents sides from creating flare and reduces contrast. If the users click pictures by attaching the Sony ALC-SH151 lens hood, the photos would have deep saturation and rich colours. This lens hood is also effective in protecting the Sony camera lens from impact, bump, and scratches. It has a slide window on the side to adjust the filter like ND or circular polariser for better pictures.