On Dec 24, 2010, at 2:02 PM, John Sessoms wrote: > From: Larry Colen > >> Igor was asking about why I'd use the BFF (Really Big Flash) setup, >> rather than simply the AF540. >> >> Here is a photo of my flash setup for the group performance: >> http://www.flickr.com/photos/ellarsee/5262376648/in/set-72157625475180697/ >> >> The near flash is in the middle of the back wall. I'm not sure of >> the exact dimensions of the dance floor, but it's likely about 40x80 >> feet. >> >> In the corner of the room, you can see the spot that they used (with >> a pink gel) to highlight some of the dancers. >> >> I had both cameras with me during the performance, and I'd shift >> between the K-x with the 16-50 ISO 6400 wide open and the K20 with my >> 18-250 at (in this case f/9) at ISO 100. >> >> K-x (cropped at 29 mm) >> http://www.flickr.com/photos/ellarsee/5261765035/in/set-72157625475180697/ >> >> K20 (also at 29mm) >> http://www.flickr.com/photos/ellarsee/5262373116/in/set-72157625475180697/ >> >> You can see, how even on the back half of the floor, inverse square >> is really biting me with the dancers closer to the light close to >> overexposed, while the ones in the back of the room are just about >> right. In this case, I'm guessing that the nearest dancers are >> probably 20' from the closest light, and 50' from the furthest. >> > > You could probably get better balance between near and far if you find a way > to move the stands out from the wall & bounce the flash off the ceiling. > You'd give up a bit of power, but likely balance it a little better so that > the nearer dancers are not so overexposed.
Actually, that would probably make it worse, as the nearer dancers would be that much closer, so the ratio between near and far would be even higher. Also, in that room, any closer and the stands would have been on the dance floor. > > You'd need to heavily sand-bag the stands to make them less likely to get > knocked over. Might even be worth getting some heavier stands. Rent them if > you can't afford to buy them. > > How are you triggering the strobes? I don't see evidence of sync cables, nor > do I see any obvious radio slaves. Seems like using the built in optical > slaves would be vulnerable to anyone's flash setting them off. I had one on radio trigger and the others on optical. And yes, I did have problems with them being set off by other people's flashes. That wasn't a problem last year when they were much higher above the dance floor. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Larry Colen [email protected] sent from i4est -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
