| Author | Thread |
|
|
08/09/2009 09:14:46 PM · #1 |
Trying to do my first effort at a drop shot for the side challenge  vawendy called. My camera is in manual mode, 430ex flash in the hotshoe, also set to manual. I also have an optically triggered slave just to the side. Blasting this with light so I canuse a fast shutter speed. My problem is the camera seems to be second guessing me and when I take the photo it reverts to 1/200 of a second. Is this because of the required flash sync speed? |
|
|
|
08/09/2009 09:27:51 PM · #2 |
Yes it is because of the flash sync. The trick to freezing with flash is overpowering ambient by 2-3 stops but using the flashes on as low a power as possible. Set your iso low, your flash power at 1/4 your flash will sync to 1/200 so go there and say F8, move your flash power up and down until you get your exposure correct, and if you have to go too high with the power, then lower your F stop. Remember your flash sync may be 1/200 which won't stop a water drop, but if your flash at 1/4 power is only on for 1/1500th and you are over ambient by 2-3 steps then you will have stopped motion.
Hopefully this makes sense to you.
Matt |
|
|
|
08/09/2009 09:33:05 PM · #3 |
Not that I have done this but because I have canon flashes I would suggest that if you need a faster shutter speed you would head into the 'high speed sync' of the canon flash (repetative bursts of light). Working distance should be fine for what you are doing but remember to let it cool between shots.
If I've got this wrong someone please correct me. Thanks |
|
|
|
08/09/2009 09:44:26 PM · #4 |
| Thanks. I think i've got it working, and some passable first efforts. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 08/26/2025 11:46:45 AM EDT.
