1. It can increase the spatial depth of the photographic image. 2. A longer depth of field can that the front and rear of the subject to be photographed can appear clearly on the screen. 3. The coverage area of the lens is large, and the range of scenes is wide. 4. Scenes shot from the same distance have a smaller image in the back than scenes shot with standard specifics. 5. Defects of perspective distortion and image distortion are prone to appear in the picture. The shorter the length of the lens and the closer the distance, the more obvious this defect is. Name: 49mm 0.45X wide-angle additional lens Front end diameter: 62mm Colour:black Material:plastic Package Contents: 1 x Macro photography Lens Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 2. A longer depth of field can that the front and rear of the subject to be photographed can appear clearly on the screen. 1. It can increase the spatial depth of the photographic image. 3. The coverage area of the lens is large, and the range of scenes is wide. 5. Defects of perspective distortion and image distortion are prone to appear in the picture. The shorter the length of the lens and the closer the distance, the more obvious this defect is. 4. Scenes shot from the same distance have a smaller image in the back than scenes shot with standard specifics.