A panel installation system for a building construction includes sliding a clamping member along structural members having opposed flanges for positioning acoustic or thermal panels therebetween. A voltage applied to the solenoid pressurizes the fluid causing the constant volume fluidic linkage to displace. The first lens group and the second lens group in the relay zoom system are configured so as to move along an optical axis when magnification is varied from a lower magnification edge state to a higher magnification edge state.