A brace includes a first body configured and disposed to secure ends of adjacent structural members together, the brace having a substantially triangular shape. The zoom lens utilizes a compound zoom structure comprising an NP or NPP zoom kernel followed by a P or PP zoom relay, with only two or three moving groups that can be used for both zooming, focusing and athermalization. The photoelectric converting unit is mounted on the first surface. The other set of strings is for system manipulation. The regulator also adjusts a priority setting of the request according to the adjusted resource estimates.