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p.2 #12 · p.2 #12 · night time skateboarding... pool skating... gear help | |
Regarding your settings.
Remember it is the flash providing the stop action, and the negative EC eliminating the ghosting, thus shutter speed isn't important. Regarding the iso, lowering it will depend on the current flash power used for these exposures. If you recallin one of my earlier posts, I mentioned locking flash in manual, along with ISO and Av. The resulting SS would let you know the exposure value and the ability to trade off flash power (battery life and recharge speed) and ISO. I don't believe the Exif will report the flash power used, so it needs to be observed manually.
Example of the math: set flashes to 1/4 power, iso 3200, Av = X ( I don't remember which lens you are using)
Let's say this results in SS 1/250. This tells you that you have 2-3 stops to take out of flash power or iso combined, and still net SS 1/30-1/60. The lower the flash power the shorter the stobe pulse and the more rapid recharge and even betterstop action, but even at full power (longest pulse) I believe pulse length is still at least 1/1600.
My point of the math is that ISO 3200 might actually be using 1/32 or 1/64 power and if so, you could lower your ISO a few stops. (I don't have enough experience with flash power data to know what your exif would typically use, please apsquare your results and maybe remind us of the lens FL and aperture.)
Regarding the large photos you posted or future ones, can you also include a 100% crop from the sharpest area in the image? At -3 EC I wouldn't expect ghosting so I would expect sharp results (lens dependent and technique dependent). In the last two ohotos you posted, imwoukdmhave expected sharper results. This means you might have either slightly missed with focus locked on coping behind rider, or might have to mfa due to back focus, or your panning might have been not 'matched to the rider causing motion blurr even during the stobe pulse, or you might need to tweak AI Servomsettings for better tracking, or might need better AF point option selection. (Whittling down this list will come with time and experience. Someone remember which camera either, but if you have case settings, set TS to -2 or -1, Acdel/Decel to +2, around AF point switching to +2. I suggest single point and not expanded but be certain to lock on rider an not be slopoyn hich could lead to lock on coping edge. If you have a 7d model, you can try small zone and track the rider as they approach , hopefully getting multiple at points on him. For me, I would start with single or spot point which can help with diagnostics but need to remember during interpretation about the -2 TS. Also verify 1st and 2nd image priority is set to focus .
Looking forward to next skate results.
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