thegridrunner wrote:
Hey Craig, I want to do outdoor portrait photoshoots with the lens wide open and without having to use neutral density filters. high speed sync excels at this.
http://dpheadshotswest.com/wp-content/uploads/2013/08/DPP_1130-Edit.jpgHey, Gridrunner.
Nice portraits at that site - really like the catchlights. Yours?
So if I am hearing you right, you want to cut down on the ambient with shutter speed. Using PCB monos but not an ND, there are a couple of approaches but they don't offer a lot of "wiggle room" (even at ISO50) depending on how bright the outdoor background ambient is and whether "wide open" is F/2.8, F/1.8, or F/1.4.
One option is to ignore the Xsync and push to 1/400th or maybe even a little more, with the plan in place to shoot at full res with the D800 and simply crop off the shadow of the curtain. In bright ambient and F/1.4, though, this approach becomes less effective since the shutter speed needs to go way past 1/400th.
The other option is to fire a PCB mono at the power level of its max flash duration. With an Einstein, this is also max power, so that introduces other limitations and issues.
Craig
httpS://www.craigwasselphotoart.com