 "3 in 1 Stacking Grid Light Modifier System for CANON 580EX/ 580EX II Flash Speedlite, SG-C GRID"
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The Light Modifier was designed to produce 3 different size of light spread (Small, Medium and Large) and when aligned and stacked two grids together, produce the smallest spots of light. Stack the small grid into the bezel to produce large size spots of light, for medium size spots of light just stack the larger size grid into the bezel." 
 "Canon - PowerShot G7 X Mark II 20.1-Megapixel Digital Camera Black"@en-US
"Combining professional-level photography within a slim body, this Canon Powershot camera gives you the best of DSLR photography with compact camera convenience. A 20.1-megapixel CMOS sensor and DIGIC 7 processing deliver fabulous photos, and a 4.2x optical zoom means you can get super-close to the action. The integrated Wi-Fi on this Canon Powershot camera lets you instantly connect and transfer your images."@en-US 