Bob Shell wrote:
Offered for your amusement without comment:
http://cgi.ebay.com/This-480mm-Ronar-is-Opening-up-a-Can-of-Whoopass-0_W0QQitemZ7569629447
f/9 to f/260 huh?
According to the sunny-16 rule (if my calculations are anywhere near
accurate), that means at ISO-100, f/260, you would need to use a shutter
speed of two seconds. At ISO-400 you might get away with 1/2 second.
...at 3200, 1/16th. ...all in bright sunlight. Of course your depth of
field would probably be from two feet behind the camera, extending all
the way to the moon. ;) (that calculation is in jest, of course)
