Siegmar M. Ortner
Member
Does anybody know the pin assignment of the ACC-Terminal so to make a special Synchro cable for a non Sony flash?
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F707 and X-Sync
- Thread starter Siegmar M. Ortner
- Start date
Mike Fitzgerald
Veteran Member
It's not as simple as knowing the pin assignment, Siegmar -- this is a serial data link, not a simple ohmic analog switching arrangement. It uses Sony's proprietary LANC protocol. However, the HVL-F1000 flash has been around for a while, so you may find some info on controlling it if you do a web search for LANC. Try here for starters:
http://personal.nbnet.nb.ca/dmeed/sony_lan.html
http://this.is/tpg/products/unwinder/tech/control_l/
http://www.mavican.nu/cgi-bin/boards/mavica.pl
Good luck,
Mike
Siegmar M. Ortner
Member
Thank You for shinig a light on me! A serial controlled flash unit with 9600 baud - very interessting, I see...
thanks,
Siegi
Bob. Millar
Well-known member
Does the remote shutter release work the same way? That is, is it a serial interface or just a contact closure?
M
Michael2
Guest
Does using a serial link make it possible for Sony, or another company, to come out with an external flash unit for the 707 that uses TTL metering and more sophisticated controls than the flash unit currently available?
Mike Fitzgerald
Veteran Member
It sure oughta do!! But Sony doesn't appear to have much interest in this unless they have a new you-beaut flash under development (which, given the consumerist level of control afforded the user of a 707, I somehow doubt).
As far as I can determine (including via e-mails to Sony) the current arrangement neither supports multiple HVL-F1000s, nor even offers any extension cords to allow one to get creative with just one of them well away from the camera. In the light of all this (pun not intended), the LANC approach to firing an external flash stands as a classic usage of a sledgehammer to crack a nut. ;-)
Mike
Mike Fitzgerald
Veteran Member
Same serial interface. The socket in the camera is a 4-pole one, btw, of which the remote control uses three. You can use both -- when the external flash is connected, the RC then plugs into the flash instead.
http://www.dpreview.com/forums/read.asp?forum=1009&page=1&message=1156991
and
http://www.dpreview.com/forums/read.asp?forum=1009&message=1350292
Mike
Mike Fitzgerald
Veteran Member
A bit more info:
http://home.t-online.de/home/mb.koenig/lanc.htm
Note that the plug depicted here is a 3-pole one. The 707 has a 4-pole socket.
Mike
http://home.t-online.de/home/mb.koenig/lanc.htm
Note that the plug depicted here is a 3-pole one. The 707 has a 4-pole socket.
Mike
Ivo34672
Senior Member
Gregory Alter
Forum Enthusiast
How is the Sony HVL-F1000 deficient, and how does it augment the capabilities of the built-in flash? I would be curious to know if you can be successful with your custom cable arrangement, too, so please let us know.
Greg
Greg
Solomon
Senior Member
Great post, Mike. I have been wondering about this, and why no aftermarket shop has a cheap extension cord ever since I bought my S85 assuming it had a standard hot shoe. I guess the major disadvantage with a slave setup is that you loose TTL metering that you have with the HVL-F1000 alone.
This is a bone-headed decision by Sony. They are not making up for it with increased HVL-F1000 sales and why else would they force you down a Lanc path.
-EL
This is a bone-headed decision by Sony. They are not making up for it with increased HVL-F1000 sales and why else would they force you down a Lanc path.
-EL
Mike Fitzgerald
Veteran Member
Hi Ed --
How confident are you about TTL metering with the HVL-F1000? There seems to be some conflicting opinion on what's really happening in this regard. It seems rather crazy if Sony hasn't in fact implemented this properly, but a couple of things sound rather suspiciously like it's not the case: the lack of preflash, and someone's report that he is fooling the HVL-F1000 into full output by covering its own sensor (while used on a 707, I think). The other thing that's rather curious here is that this flash doesn't get a mention in the official list of accessories for the 707 -- and this with a newly implemented accessory shoe...
As I've probably mentioned a dozen times already (because it just won't stop bugging me), I'm probably going to have to say goodbye to a perfectly good pair of Oly T32 flashes I've had since the early 80s, to finance a 707 with the Oz dollar in its current drab state. You could daisy-chain as many T32s as you wished, with the first one either on or off camera, and still retain full (and very accurate with the OM2n) TTL control. Eighteen years later, and here we aren't... And they call it technological progress! Boneheaded sums it up. :-(
How confident are you about TTL metering with the HVL-F1000? There seems to be some conflicting opinion on what's really happening in this regard. It seems rather crazy if Sony hasn't in fact implemented this properly, but a couple of things sound rather suspiciously like it's not the case: the lack of preflash, and someone's report that he is fooling the HVL-F1000 into full output by covering its own sensor (while used on a 707, I think). The other thing that's rather curious here is that this flash doesn't get a mention in the official list of accessories for the 707 -- and this with a newly implemented accessory shoe...
As I've probably mentioned a dozen times already (because it just won't stop bugging me), I'm probably going to have to say goodbye to a perfectly good pair of Oly T32 flashes I've had since the early 80s, to finance a 707 with the Oz dollar in its current drab state. You could daisy-chain as many T32s as you wished, with the first one either on or off camera, and still retain full (and very accurate with the OM2n) TTL control. Eighteen years later, and here we aren't... And they call it technological progress! Boneheaded sums it up. :-(
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