[. . . ] [. . . ] € Can be used with the optional EX-25 extension tube under the following conditions. 34x) • When using E-300, make sure that the camera firmware is version 1. ) • Specifications are subject to change without any notice or obligation on the part of the manufacturer. Precautions: Be Sure to Read the Following Warnings: Safety Precautions • Do not view the sun through the lens. [. . . ] [. . . ]