The new camera makes superfast exposures possible and has the sensitivity to provide visually pleasing and quantitatively meaningful images in a photon-starved environment. It delivers 70 frames/s at the full resolution of 512 × 512 pixels with a high signal-to-noise ratio, enabling quantitative high-speed, low-light imaging. When binning or a region of interest is selected, this new camera produces images at even higher frame rates (up to 1076 frames/s). Additional features allow for optimized camera triggering and streamlined connectivity through IEEE 1394b. The ImagEM X2 also has improved overall signal-to-noise ratio, increased non-EM dynamic range, and built-in EM gain measurement and calibration functions. It also features a software-controllable shutter that prevents EM gain degradation and image lag. To prevent EM gain degradation, the shutter is closed when the built-in EM gain protection feature is enabled. In addition, closing the shutter when a user replaces a lens, for example, can prevent image lag.