An image pickup apparatus having an image capturing unit capturing an image, a first recording unit temporarily recording an original image signal output from the image capturing unit, a processing unit performing predetermined signal processing upon the original image signal output from the image capturing unit, and an instructing unit instructing the processing unit to capture a still image. The pin-engaging drawbar wedge includes a bolt extending into the drawbar and in one embodiment, having the bolt head secured to a wedge positioned beneath the locking pin extending transversely through the receiver and the drawbar. In some cases, the sp2 bonded carbon content may be sufficient to provide the conductive diamond-like carbon material with a visible light transmissivity of greater than about 0. Methods of fabrication are disclosed, and methods to correct for manufacturing errors in thin film deposition are described.