Archived posting to the Leica Users Group, 1998/11/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Bonjour Francois, R7 and SB23 works in manual flash mode only. You have to use the aperture for the desired distance with the classic formula "f(aperture)=GN/mtr(distance)" for film speed ISO 100. As far as I know has the SB23 a GN of 20 (calculated by 35mm) and you can use it for 35mm lenses and greater. There must be also a table with distances and apertures on the top of the SB23. TTL works with the specific Nikon gear only. If the R7 shows in T or P the bars for fill-in flash, then this will be not valid. You can use the R7 in combo with the SB23 in A or M only. If you use it in A mode the distance talbe or formula is still valid for your pre-selected aperture. For a better control itīs commendable to use the R7 in M mode. Here you can use it with any shutter speed up to 1/100 and you can control with the aperture/shutter speed combination the background light and with the distance of the aperture and flash combination the distance area, in that the SB23 works. In other words, you set your aperture/shutter speed (within the sync-speed) combination in order to your desired background effects and control the flash distance for this aperture in order to the foreground. This works perfect. Good luck, regards, Hans-Ferdinand HFHUBER@t-online.de FBrunelle@aol.com schrieb: > I have a small TTL capable Nikon SB-23 flash on hand. While I scrape the > money to buy a Metz unit can I use the SB-23 with the R7? I have only one > push button on that unit with three positions: Off-Manual-TTL. Can I use the > TTL feature of the flash mounted on the R7 or am I only restricted to the > "Manual"? Finally, can I use the Program or Aperture-priority or I am limited > to Shutter-priority set at 1/100s? > Thanks to all for your help. > Regards, > > Francois Brunelle > Ashburn VA