On 2/12/03 8:53 AM, "Bob Talbot" <snapper@st-abbs.fsnet.co.uk> wrote: > That was how academia worked traditionally. > Sadly with optics while the basic maths is straightforward, it's still maths. Fine. Do the math. It's still not like shooting everything at f16. Lawrence ---------------------------------- Lawrence W. Smith Photography http://www.lwsphoto.com lsmith@lwsphoto.com ----------------------------------