An imaging apparatus for an image intensifier (II) X-ray system comprises a camera lens assembly (CLA) configured to cooperate with the II to create an X-ray image, the CLA comprising an image sensor and a lens. The image sensor is configured to convert received light and generate a digital image. The lens is configured to guide the light from the output surface to the image sensor, the lens having a fixed diaphragm. The CLA comprises an a diaphragm and/or neutral density filter with a fixed attenuation. A controller is configured to control an amount of amplification of the electric signals or the digital image. The sensor, e.g. CMOS sensor, is configured to amplify the analog electric signals before conversion into the digital image according to an analog gain, and the controller is configured to control the amount of amplification by controlling the analog gain applied by the image sensor.
