The EZa functions as: An automatic mer. Choose the delay (time before shooting starts), exposure time, interval, and User's Manual for the Neewer EZa-C1 intervelometer timed remote release for Canon Cameras (the C1 is for APS-C cameras and the C3 is for Fullframe cameras, The timer is easy to operate once you experiment with it for a few minutes. The instructions included are not very detailed but the timer is easy to understand. NEEWER INTERVALOMETER DIGITAL Timer Remote EZa-C1 for Canon Manual Batteries ExC - £15.99. FOR SALE! Fully tested and working. 403592827599.Instruction Manual ltffi@IW. West Midlands, Keep these safety instructions where all 2 Adjust camera settings as follows (see the camera manual.