The 19A is no longer made but its a great camera. You can find out more information about Photosonics. It is highly reliable but it only has one size of replaceable magazines (100 foot) but it loads very easily with daylight spools. The dual pin registered pin movement locks the film but you have to be careful about using the variable at low angles. At 5° any slight change in the angle causes fluctuations in the exposure. But it does a great job, just keep the shutter open greater that about 18°.