1. Due to the specificity of the product, bulk spot size exists within 1 ~ 2cm error, such as the size of the precise higher requirements can contact customer service consulting custom. 2. Customised products, once produced, does not support the modification and return, please understand! 3. About chromatic aberration, due to lighting, angle, monitor and other imaging may have a slight chromatic aberration, please prevail in kind this is not this is not as a reason to return or exchange the goods, mind careful shooting. 4. We bear all the damage on the road, please pro site unboxing inspection to determine the integrity before signing. If there is damage, please refuse to sign in person, the first time to contact us, we give pro expedited replacement!