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| Canon 5d2 - TT1 - MC2 / Einstein - banding problem http://www.paulcbuff-techforum.com/viewtopic.php?f=8&t=2514 |
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| Author: | drumsab [ Wed Nov 16, 2011 11:19 pm ] |
| Post subject: | Canon 5d2 - TT1 - MC2 / Einstein - banding problem |
Hi, I've begun to experiment more with using lights. After taking some recent photos, I noticed what appears to be a small "band" at the top of my landscape photos and on the left side when taking portrait orientated photos. Not all the time, just some times. The settings I uses were f/8, 1/125, ISO 200. I was using a tripod with a 24-105L lens (IS turned off). I used a PocketWizard MiniTT1 transmitter on the camera and PocketWizard PowerMC2 receivers on the Einstein lights. Any ideas on what may be causing this? |
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| Author: | amoringello [ Thu Nov 17, 2011 7:52 am ] |
| Post subject: | Re: Canon 5d2 - TT1 - MC2 / Einstein - banding problem |
Is this a lower settings while the flash duration is shorter? The Einsteins have a pretty quick flash duration at lower power and can make a near-synced shutter more noticeable. 1/125 seems pretty slow to still be seeing this behavior. For years with both the Chinese and Elinchrom radio triggers, I've had to shoot at 1/125 to eliminate banding even with slower flashes. Oddly, with Einsteins and their CyberSync triggers, I can sync at full speed (a lowly 1/180 for my camera, but still better than 1/125) Is this new behavior with Einsteins v.s. other strobe brands? Or are you new to using strobes and this is something that is "just happening" now that you're using them? I don't know enough about the 5D2, but I would think it should sync well over 1/125. Also, you are not using the MiniTT1's in TTL mode are you? Could that cause them to sync differently? Perhaps more slowly as they are expecting pre-flash? (They are not available for my brand camera so I don't much about those either). |
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| Author: | kenyee [ Thu Nov 17, 2011 10:38 am ] |
| Post subject: | Re: Canon 5d2 - TT1 - MC2 / Einstein - banding problem |
drumsab wrote: After taking some recent photos, I noticed what appears to be a small "band" at the top of my landscape photos and on the left side when taking portrait orientated photos. Not all the time, just some times. It's the slow mechanical shutter on your 5D interacting w/ some weird programmed timing on the TT probably. 1/125 should be plenty to compensate for the slowish 5D shutter (Zack Arias mentions the same issue as do a few folks on the POTN forums). Talk to the PW TT folks to see which timing parameter to muck is what I'd do... |
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| Author: | Technical Support [ Thu Nov 17, 2011 11:07 am ] |
| Post subject: | Re: Canon 5d2 - TT1 - MC2 / Einstein - banding problem |
Use a standard sync cord, and look for the same thing. If it is still present, then it is a camera issue. If it goes away, then it is an issue introduced by the remotes, either propogation delay, or timing. |
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