"N" and "T" settings on Mamiya 50mm RZ lens

[jimcrotty]

I need help. I just purchased a Mamiya 50mm 4.5 RZ lens for my 67 RZ.

What are the "N" and "T" settings for, and how should I use the

collar that indicates depth of field? I'm just getting started with

medium format.

 

Thanks!

[miles_feigenbaum___dallas_]

http://www.macuserforums.com/webx?14@213.X1byaDCifQa.0@.ee70433

[enrico_pocopagni1]

Hello Jim,

the (green)N and (white)T stands for Normal and Time exposure. If you want the shutter to last for the time you set on the body (or AE finder) dials keep the slider the normal way (green N appears). If you want a long exposure (over 8 sec.) depress the metal release and slide it toward the arrow. On the left T appears. Once you fire the shutter, it will stay open until you depress the metal release and slide it back again. Be careful to perform the second operation in a very gentle way, because the shutter is open, and if you shake the lens you could add a certain amout of fuzziness, depending on how long steady exposure lasted.

Greetings. Enrico