Hi All,

Just purchased a Mamiya RB 67 Pro S as my start into medium format photography!!

very excited to play around with it when i get in about 5 or so days.

Though it is fully manual exposure, just wondering if someone can help me with estimating proper exposure?

As i understand exposure, i should use the sunny 16 rule, which is,

100 iso at f16 is 1/100 (or 1/125)

then if it becomes slightly overcast it would turn out to be...

100 iso at f11 at 1/200 (or 1/250)

overcast would be

100 iso at f8 at 1/400 (or 1/500)


would this be right or am i completely left field?

regards,
Tim