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Archive 2017 · TTL flash delay, A7r2 and Godox TT685s

  
 
ugdog
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p.1 #1 · TTL flash delay, A7r2 and Godox TT685s


Shot an event recently and was thrown off by the delay when using TTL with the TT685s on the A7r2. I don't usually use on camera flash but sometimes there is no choice. Can anyone tell me what's going on and is there any work around short of shooting manually? A delay like this is a bit amateurish IMO. My Canon gear never did anything like this.

Any help appreciated...



May 16, 2017 at 05:35 AM
3catsinky
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p.1 #2 · TTL flash delay, A7r2 and Godox TT685s


same issue here, and I hate it. i use them in all manual mode, since they are mostly off camera. I find using the Multi mode, there is no delay at all, but you also cant change the power value when using slaves. Hopefully someone else chimes in with some info.


May 16, 2017 at 06:15 AM
ugdog
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p.1 #3 · TTL flash delay, A7r2 and Godox TT685s


I suspect it's a Sony issue and not a Godox issue...
And just for the record, I also learned that AWB sucks on the A7r2



May 16, 2017 at 07:31 AM
GMPhotography
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p.1 #4 · TTL flash delay, A7r2 and Godox TT685s


AWB can be fooled on any camera it depends on what it is seeing. Anything in front of the camera with any strong color will throw it off. In most cases working under tungsten and flouresent lighting will cause more problems.


May 16, 2017 at 07:38 AM
ugdog
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p.1 #5 · TTL flash delay, A7r2 and Godox TT685s


Yes, AWB is far from perfect on any camera but I found the Canon AWB better than the Sony


May 16, 2017 at 07:44 AM
GMPhotography
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p.1 #6 · TTL flash delay, A7r2 and Godox TT685s


Point being it's still a compromise and You need to WB every lighting situation. Phase One backs suck at AWB they cost 40 k. Your never going to get perfect WB.

ugdog wrote:
Yes, AWB is far from perfect on any camera but I found the Canon AWB better than the Sony




May 16, 2017 at 08:27 AM
dhachey
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p.1 #7 · TTL flash delay, A7r2 and Godox TT685s


GMPhotography wrote:
AWB can be fooled on any camera it depends on what it is seeing. Anything in front of the camera with any strong color will throw it off. In most cases working under tungsten and flouresent lighting will cause more problems.


I'm with you here. LEDs are the bane of my existence, especially when people mix daylight and tungsten balanced (cool ad warm LEDs). Throw in dimmers when shooting with electronic shutters and things get really weird. I just try to fix things in post as best I can.




May 16, 2017 at 09:26 AM
ugdog
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p.1 #8 · TTL flash delay, A7r2 and Godox TT685s


Yes, all very true regarding white balance. Now, can anyone explain the delay when using TTL on camera flash on camera the Sony A7r2?


May 16, 2017 at 10:15 AM
GMPhotography
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p.1 #9 · TTL flash delay, A7r2 and Godox TT685s


I think what's happening is you get a pre-flash to set output before the actual flash intensity is determined given ISO/ F stop


May 16, 2017 at 10:18 AM
ugdog
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p.1 #10 · TTL flash delay, A7r2 and Godox TT685s


It drives me nuts! I do hope Sony fixes it...


May 16, 2017 at 11:09 AM
joel022484
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p.1 #11 · TTL flash delay, A7r2 and Godox TT685s


How long of a delay are you talking about? I know there is a "delay" using TTL compared to Manual, but that is my expectation as it needs a pre-flash to determine the amount of flash for the exposure.


May 16, 2017 at 01:09 PM
ugdog
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p.1 #12 · TTL flash delay, A7r2 and Godox TT685s


The delay is maybe 1/4 second? It drives me crazy! I expect the camera to fire the instant I press the shutter. This NEVER happened with my Canon 5d3's.


May 16, 2017 at 02:02 PM
genji
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p.1 #13 · TTL flash delay, A7r2 and Godox TT685s


Does this delay only occur when the TT685S is used in TTL mode and is mounted on the camera? I've ordered two TT685S speedlights and an X1T-S controller. Before placing the order I read everything I could find online about the Godox system and this delay was never mentioned.

ugdog wrote:
Shot an event recently and was thrown off by the delay when using TTL with the TT685s on the A7r2. I don't usually use on camera flash but sometimes there is no choice. Can anyone tell me what's going on and is there any work around short of shooting manually? A delay like this is a bit amateurish IMO. My Canon gear never did anything like this.

Any help appreciated...



May 16, 2017 at 06:18 PM
ugdog
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p.1 #14 · TTL flash delay, A7r2 and Godox TT685s


genji, I don't believe it's a godox issue but a Sony issue. There is no delay when using the flash manually on or off the camera. I usually use the TT685's off camera with the X1T-s without issue.


May 16, 2017 at 08:07 PM
genji
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p.1 #15 · TTL flash delay, A7r2 and Godox TT685s


ugdog wrote:
genji, I don't believe it's a godox issue but a Sony issue. There is no delay when using the flash manually on or off the camera. I usually use the TT685's off camera with the X1T-s without issue.


Thanks for the clarification but do you experience a delay when using the TT685's off camera with the X1T-S in TTL mode?



May 16, 2017 at 08:22 PM
TheEmrys
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p.1 #16 · TTL flash delay, A7r2 and Godox TT685s


Never had this issue with Sony flashes.


May 16, 2017 at 08:24 PM
ugdog
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p.1 #17 · TTL flash delay, A7r2 and Godox TT685s


TheEmrys, that's interesting no ttl delay using Sony flashes. Maybe it's a compatibility issue with godox... Anyone else have experience?

genji, I haven't tried using ttl off camera. I always shoot in manual off camera. Would be worth testing



May 16, 2017 at 08:52 PM
genji
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p.1 #18 · TTL flash delay, A7r2 and Godox TT685s


ugdog wrote:
TheEmrys, that's interesting no ttl delay using Sony flashes. Maybe it's a compatibility issue with godox... Anyone else have experience?

genji, I haven't tried using ttl off camera. I always shoot in manual off camera. Would be worth testing


I've never experienced a delay with Sony flashes off camera but always in optical wireless mode, using the HVL-F20M to trigger the other Sony flash units. I'll test using TTL off camera as soon as I receive my TT685S speedlights and X1T-S trigger.



May 16, 2017 at 09:21 PM
a2rob
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p.1 #19 · TTL flash delay, A7r2 and Godox TT685s


My experience as well as others when using any of the Godox flash and strobes OCF with the X1T or TT685, 860II have been very crappy. It will usually overexpose to a point that FEC cannot correct. Appears to be a known issue after digging deeper....


https://www.fredmiranda.com/forum/topic/1488555



May 16, 2017 at 10:10 PM
genji
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p.1 #20 · TTL flash delay, A7r2 and Godox TT685s


I encountered that error with the Metz 52 AF-1 on Sony A7 series cameras.

Bespoked wrote:
Another issue for aftermarket flash I've experienced...

http://i349.photobucket.com/albums/q376/Bespoke_Imaging/IMG_9440_zpsghc973bk.jpg



May 16, 2017 at 10:29 PM
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