Flash duration for the SB-600
Flash
duration (approx.):-
1/900
sec. at M1/1 (full) output;
1/1600 sec. at M1/2 output;
1/3400 sec. at M1/4 output;
1/6600 sec. at M1/8 output;
1/11100 sec. at M1/16 output;
1/20000 sec. at M1/32 output;
1/25000 sec. at M1/64 output
I Googled "Flash Duration"... The Flash Durations are approximate ... I still can find my SB-900 manual... (only got it Monday) and it says the 900 at 1/128 is 1/138500.
About storage... Yes the 4GB cards are available NOW... It was only a couple of years ago that I was paying 139.00 for a 1GB card. Now I carry 42 GB of storage on a normal extended outing. That storage is not exactly what I was talking about... BACKUP. It would just KILL me if a hard drive crash occured and my data were lost.
Currently I have 5 TB of external backup. Fortunately the TB disks are very cheap now but it is often that I take 50/100 shots on a single day of normal shooting. A big shoot, for me at a race track might be 15000 shots for a weekend. All of this must be backed up... You learn to be brutal with the original data with bird shooting... MANY shots are not good and cannot be used for identification... I try to scratch these before backup. In the race car stuff, All of it must be backed up. Requires a bunch of storage and a good "work flow"...
Fraser
... thanks for the comments.