<< Oh...and on the 8th day, the Goddess invented Portra 800...>> and she knew what she was doing when she invented it...the stuff is gorgeous. Lea ----- Original Message ----- From: "*-CHILLED DELIRIUM-*" <sfunp@scfn.thpl.lib.fl.us> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@listserver.isc.rit.edu> Sent: Tuesday, June 04, 2002 1:18 PM Subject: Re: Applying appropriate aperture : : : On Tue, 4 Jun 2002, Michael Krebs wrote: : : > What would be the desirable aperture setting for table shots of : > approximately 10 people at a wedding? I use a nikon n90s with a 35-70 2.8 : > lens, an SB-26 flash with 400asa film. I would like to light the background : > a bit without blowing out the subjects. Thank you for your suggestions. : > Michael : : You have some things to consider. First, Depth-of-Field...unless : you have enough of it, your table shots will not work, and this : is a parameter without any flexibility. Are you going to have them : get up and line up behind the other seated half of the table ? : That would necessitate less DoF. Let's say you're stuck with : f/8. : : What is the ambient light exposure at f/8 there with your ISO : 400 film ? My guess (if it's indoors at night) is somewhere : around f/5.6-8 @ 1/4 sec. : : In order to hold maximum detail in the background you need : to let as much of the ambient light affect the exposure as : possible. Since your aperture is fixed by your DoF needs, : you are left with shutter speed as your control to do this. : : By slowing the shutter down, you will bring in more of : the ambient light onto the film. With the example at hand, and : a shutter speed of 1/30th sec. you would be somewhere between : a 6:1 and an 8:1 ratio, meaning the background would be visible, : but very dark. If you could go to f/5.6, or risk going to : 1/15th (you will get some, mostly minor blurs) it would be better. : : Oh...and on the 8th day, the Goddess invented Portra 800... : : --- Luis : :
