elaine marie Posted June 20, 2006 Share Posted June 20, 2006 I took a family group shot. Bright mountain landscape in the background and shady foreground on subjects. Do I use ISO 100 for bright background or 200 for shady forground? Thanks Elaine Marie Link to comment Share on other sites More sharing options...
www.antiquecameras.net Posted June 20, 2006 Share Posted June 20, 2006 set your camera to its sync speed....lets say its 1/125....now, setting your shutter to 1/125, meter the background and determine the proper aperture for a good exposure of the BACKGROUND....lets say, using ISO 100 film your cameras reads F11.... leave your camera set at 1/125 at F 11 and set your flash to exposure your group ONE STOP LESS than the stop for the background...so F11 minus one stop is F8..... <p> so to summarize.... your camera would be 1/125 at F11 and your flash set to F8....<p> If you use 200 speed film....it would be 1/125 at F16 with your flash set to F11....<p> I'd use a 160 low contrast film like Kodak 160NC for a shot like this...<p> Dan<p> <a href="http://members.aol.com/dcolucci">Antique & Classic Cameras</a> Link to comment Share on other sites More sharing options...
picturesque Posted June 20, 2006 Share Posted June 20, 2006 100 ISO for bright background. Fill foreground with flash or reflector if possible. Link to comment Share on other sites More sharing options...
cc_ss Posted June 20, 2006 Share Posted June 20, 2006 D, I've been reading this forum for a couple of years now and that was the best explanation I've ever read on any technical question. Thank you! cc Link to comment Share on other sites More sharing options...
picturesque Posted June 20, 2006 Share Posted June 20, 2006 Well if the background is truly bright, and you want to show that background as "correctly exposed", and the foreground balanced to that, you would want the slower ISO to get a wider aperture since you don't want to go faster than the fastest sync speed (unless HSS can accomplish the flash fill for the distance you need). Have you checked out the fill flash assignment? Link to comment Share on other sites More sharing options...
elaine marie Posted June 21, 2006 Author Share Posted June 21, 2006 Nadine, I lost track of the fill flash assignment do you have the link? Thanks Elaine Link to comment Share on other sites More sharing options...
david_schilling___chicago_ Posted June 21, 2006 Share Posted June 21, 2006 Elaine, it doesn't really make much difference if you're using ISO 100 or 200. What's important is the relative light difference between your background and your subjects in the foreground. A bright mountain side tends to be alot of dark green which tends to gobble up the light...the degree of difference and the power capabilities of your flash are probably the deciding factor. Link to comment Share on other sites More sharing options...
picturesque Posted June 21, 2006 Share Posted June 21, 2006 Elaine, they are all under the Lighting category. Link to comment Share on other sites More sharing options...
michaelmowery Posted June 21, 2006 Share Posted June 21, 2006 D Colucci why would you under expose the subject by one stop? This is not fill flash, but rather balancing out the bright background with the shady foreground. If it is f11 @125 in the background then you need to bring the flash up to f11 on the subject. Link to comment Share on other sites More sharing options...
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