Author Topic: More annoying flash questions  (Read 52452 times)

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Offline JimA

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Re: More annoying flash questions
« Reply #30 on: November 20, 2008, 07:34:40 PM »
TTL = through the lens - back in the film days the camera sensor looked at the film, and cut the flash off when it had had enough. Unfortunately digital sensors don't relect light well so modern TTL works on a pre flash which makes the measurement

ADI - automatic distance intergration If you are photographng a girl 5 feet away and a car 10 feet away which do you expose for ?
if your camera and lens both have ADI then the flash will expose for the one that you have focussed on

Personally I use the sensor on my Metz!

I find preflash a pain and the alpha100 ADI ain't great

Offline Stef.

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Re: More annoying flash questions
« Reply #31 on: November 20, 2008, 10:49:55 PM »
Hello Stef on page 59 if you go to the logging radio:DSLR-A700-off-camera flash hvlf58/42-->controller hvlf58 Note*4

Note*4 says on 6th paragraph: "When using hvlf56am/36am as off camera flash select this mode.When you change the controller,set [C03] in the custom setting (page 74)"

The original question was to use the 58 ON camera as the controller and when doing this than you can only use it in connection with another 58 or 42. Read this carefully again. On your page it says exactly what you can use the A700 with and this is limited. You can contorl though the other flashes with the incamera flash. I would love you to prove me wrong though ;)
Stef.

Page 74 says {CTRL2] mode:[CTRL]. Does it mean that it can work like i metion before  or is a printing mistake? The reason that i ask you, is that you are the only one i know that have the A700+58am and other flashes. I don't have this flash so i can not make this test.

Thanks
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Offline REX (aka TG)

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Re: More annoying flash questions
« Reply #32 on: November 21, 2008, 09:28:02 AM »
Thank you Stef for the confermation so it make sense now the a900 have more advantages vs a700 in flash capital
aSLT/SLR/NEX,DYNAX

Offline Stef.

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Re: More annoying flash questions
« Reply #33 on: November 21, 2008, 07:01:46 PM »
I have no idea what happened to my above post??? I did write a long answer and not just a quote??? Help!
Anyhow in a nutshell: I was trying to say in my last post: the A700 with ON-board mounting of the 58 can ONLY trigger either another 58 or 42 Sony flash NO other flashes including NO other Sony flashes in wireless mode. If you want to trigger any other Sony flash models with the A700 you NEED to use the in-camera flash.
It is a bit confusingly explained in the manual but that is what appears to be the case.

TG is you read the page before the one you quote here you will see the A700 specifically singled out. There is a little box particularly written for the A700!
Stef.
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Re: More annoying flash questions
« Reply #34 on: November 21, 2008, 08:28:56 PM »
I despise pre-flash.

With my Maxxum 7d the interval between the preflash and the exposure seems precisely calibrated to avoid red eye - because when the subjects eyes are closed, there is no red eye!!!

I wish that the flash units would have sensors in them.  Not ideal, but better than pre-flash or ADI.

Often, for parties or other gatherings, I set the flash manually for a certain distance, do a check shot and then shoot at that distance and aperture only.  Consistency at least.  (f/8, ISO 400 and be there...)

Perhaps with the a900 the above will improve (I'm still on the 5600HD) and in no mood to spend on another flash.  I'd rather buy more studio lights.


Offline Stef.

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Re: More annoying flash questions
« Reply #35 on: November 21, 2008, 10:48:06 PM »
There is a difference between the pre-flash for red-eye reduction and the pre ttl setting in the flash menu. It is not the same pre-flash or all strobes would fire!
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Offline dominicall

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Re: More annoying flash questions
« Reply #36 on: December 09, 2008, 04:04:22 PM »
OK - this is probably a question that Stef could answer without even thinking about it, but if anyone else can answer that's great.

With the 700 I was firing the 58 and 42 from the 700's onboard flash.  Obviously I no longer have that option with the 900.  Stef mentioned this Minolta lead - Minolta OC-1100 - which I'm assuming the Sony equivalent is this on Amazon. My question is, using either that lead, or this alternative, will the 58 fire the 42 wirelessly?  Also, if using the 58 as the master using either of these cables, would I then be able to still use ratio control?

Thanks all for looking.

Dominic
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Offline Simon [aka springtide]

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Re: More annoying flash questions
« Reply #37 on: December 09, 2008, 04:52:37 PM »
Hi

OK, one the camera side you need a cable that attaches to the hotshoe, and on the other the four pin connector.
As you posted: http://www.amazon.co.uk/Sony-FA-CC1AM-Connection-Remote-Shooting/dp/B000JKX8H8

This basically just extends the hotshoe while then allows you to fire the other flash wirelessly as normal.

And you can extend these cables using:
http://www.amazon.co.uk/Sony-FA-EC1AM-Extension-Cable-Camera/dp/B000JKV7MQ/ref=sr_1_3?ie=UTF8&s=electronics&qid=1228841485&sr=1-3

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Offline Stef.

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Re: More annoying flash questions
« Reply #38 on: December 09, 2008, 04:54:26 PM »
Springtide summarised it. Yes is the answer. Once the 58 is connected via cable to the A900 is work as if it would be on the hotshoe.
Here is a picture where I have done it the other day:
http://www.dynaxdigital.com/index.php/topic,7573.msg59495.html#msg59495
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Offline dominicall

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Re: More annoying flash questions
« Reply #39 on: December 09, 2008, 05:15:46 PM »
Thanks Simon and Stef

I wasn't sure whether I needed the cable that goes on the hotshoe or the one that just plugs into the sync socket.

More shopping then - LOL.

Dominic
a900+VG + A700
CZ24-70, Sony 70-200G, Sony 70-300G, Sony 135 STF, CZ85mm, KM 20mm, KM 24mm RS, KM 17-35G, KM 400/4.5G HS, Tamron 90mm Macro, Sony 50 1.4, Sony 16mm Fisheye
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Offline chappo1

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Re: More annoying flash questions
« Reply #40 on: January 23, 2009, 06:45:48 AM »
I have read this thread through a few times and it has been terrific for upping my scanty knowledge of flash.
I bought an F58 for my A700 and was offered a couple of Minolta 3200i units.  After reading what I could and taking some advice, I opted not to buy them but they (and a 7000i camera) were then thrown in the deal for other bits I bought for free so now I own them.  If I am prepared to regulate the output via distance, diffusers and flags can I trigger them from the F58 by purchasing the little optical slave units Stef mentions or will I have to buy an adapter to trigger by cable?
I do not want to buy the gear and find it does not work...john

 
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Offline Bill

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Re: More annoying flash questions
« Reply #41 on: January 23, 2009, 12:40:45 PM »
Apparently, the 58 will only trigger the 42, and in some situations, the older 56 and 36.  You would have to search the net and look for 58AM not triggering wireless.  I have read about its incompatabilities, but never worried too much because I don't own one.  For this reason, I can't be too much more helpful.

Bill
a77 + vertical control grip, a700 + vertical control grip,  24-70/2.8 SSM ZA,  70-200/2.8 SSM G,  HVL-F42AM flash

Offline Stef.

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Re: More annoying flash questions
« Reply #42 on: January 23, 2009, 06:47:50 PM »
Chappo1- I need to try this out as I have never tried slave cells in connection with Sony flashes only with third party flashes. I can pretty much tell you now that you do need the adapter to connect the slave cell to the flash! Will confirm later on today.
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Offline Stef.

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Re: More annoying flash questions
« Reply #43 on: January 23, 2009, 08:13:40 PM »
Chappo1- these are my findings:

1. To the best of my knowledge I don't see a way to attach a slave cell to any of the Sony/Minolta flashes I have. Not sure about the 3200i though.
2. But if you have any other third party flash- here is what you need to do and this works either with the 58 or indeed any other Sony flash mounted on the hotshoe of the camera or linked via cable to the hotshoe:

(a) set the flash do normal flash and NOT wireless
(b) set the flash to manual (not ttl!) => you can then regulate the output of the 58 directly on the flash by going down with the flash output to i.e 1/32 if you want
(c) take you photo

-> overall exposure can then be regulated by flash distance to subject and by manually controlling the output of the 58.

Bill: with the help of slave cells the 58 can trigger any other flash but Sony/Minolta!

Hope this helps and should somebody find a way how to connect a slave cell to a Sony/Minolta flash I would be very grateful if you could let us know.
Stef.
« Last Edit: January 23, 2009, 08:17:41 PM by Stef. »
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Re: More annoying flash questions
« Reply #44 on: January 23, 2009, 08:20:55 PM »
There is a difference between the pre-flash for red-eye reduction and the pre ttl setting in the flash menu. It is not the same pre-flash or all strobes would fire!
Stef.

You misunderstood what I meant.  The pre-flash is perfectly timed such that people blink and their eyes are CLOSED when the exposure flash goes off.  This has happened to me with the Maxxum 7D more times than I care to count!

Cheers,
Alan.