I traded an extra Mamiya M645 and lens for a Calumet CC-400 with a Schneider 180mm/f/5.6 lens, 3 film backs/holders and a Poloroid back, hard case and dark cloth. 20 sheets of 100 speed film. So I'm ready to go! Of course I have some basic questions to get myself started. Is this basic sequence correct... 1-I take my light reading and make a decision on f/stop and shutter speed 2-I open the aperture so I can see through the lens 3-compose and focus 4-release the aperture blades 5-insert the film holder and remove the dark slide 6-release the shutter 7-replace the dark slide Am I doing good so far???