Is my Af360 mad at me or something?


Dubious Drewski

Link Posted 07/06/2011 - 21:44
I'm out in the woods right now shooting promotional stills for a small movie being filmed, and I'm miles from civilization. (good thing for internet-enabled phones!)

When I mount my AF360 onto my k5, it does two odd things ; It will not let me set my shutter faster than 1/90th, no matter what I try, AND it will not let me leave PTTL mode. The camera is in manual, so why would I want the flash in Pttl? And where did my 1/180th sync speed go?

What is going on with this thing? Any ideas?

Anvh

Link Posted 07/06/2011 - 21:55
Have you set the flash on second curtain (alternative name: trailing curtain) maybe
Stefan


K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
Last Edited by Anvh on 07/06/2011 - 21:56

hefty1

Link Posted 07/06/2011 - 22:56
I don't know about the sync speed but my 360 won't change into any mode other than P-TTL when it is attached to the camera and the camera is turned on. To get around it I just take it off the body, set it to manual and then return it to the body - seems to do the trick.
Joining the Q

Dubious Drewski

Link Posted 07/06/2011 - 23:20
Thanks for the replies so far. For some reason, I can now use 1/180th, but I don't know what I changed to cause that...

And the trick you're describing hefty, has never worked for me. This is what happens:
1. With the flash and camera separate, I turn both on.
2. I set both to manual.
3. I mount the flash on the camera.
4. But the moment I touch the shutter release, the flash goes into PTTL.

How am I screwing this up, I wonder?

Don

Link Posted 07/06/2011 - 23:34
what settings are you using?
Here is what I know for sure (that can give results you described):
if your flash unit is set to trailing curtian sync, you get 1/90 sec shutter.
IF you have your power switch on your flash set to wireless position, it switches to p-ttl regardless of any inputs you use on camera or flash...
If you do both (above) you get the behaviour you described.

other than that .... diry/wet contacts on the flash or body????
Fired many shots. Didn't kill anything.

terje-l

Link Posted 08/06/2011 - 09:54
My experience is as follows:
1. Mount the flash on the camera, both units off.
2. Switch on the camera, then the flash: Flash stuck in PTTL
3. Switch on the flash, then the camera: Flash accepts other modes.
Best regards
Terry

K20D, Optio I10, DA 18-55 1:3.5-5.6 AL II, A 1:1.7/50, D FA 1:2.8/100 Macro, Sigma 70-300 1:4-5.6 APO DG Macro, Pentax AF 360FGZ

Cayman

Link Posted 08/06/2011 - 12:37
i have had a similar problem - flash always defaulting to p-ttl mode when on camera. I found that if you switch the camera mode to X, flash will then go into any mode you like.

terje-l

Link Posted 08/06/2011 - 16:02
Thanks, Cayman. Didn't think of using the X mode. Perfect.
Best regards
Terry

K20D, Optio I10, DA 18-55 1:3.5-5.6 AL II, A 1:1.7/50, D FA 1:2.8/100 Macro, Sigma 70-300 1:4-5.6 APO DG Macro, Pentax AF 360FGZ

Cayman

Link Posted 08/06/2011 - 16:32
you're welcome!

Anvh

Link Posted 08/06/2011 - 19:19
Cayman wrote:
i have had a similar problem - flash always defaulting to p-ttl mode when on camera. I found that if you switch the camera mode to X, flash will then go into any mode you like.

You can't control your shutter speed then
Stefan


K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ

terje-l

Link Posted 08/06/2011 - 20:30
No, Stefan, That's correct. But for normal flash photography 1/180 s is as good a speed as any. The flash duration of 1/1000 s or less will be the dominant exposure factor anyway.

Fill flash is a different case, where you might want better control than the +1-3 EV you can dial in on the flash.
Best regards
Terry

K20D, Optio I10, DA 18-55 1:3.5-5.6 AL II, A 1:1.7/50, D FA 1:2.8/100 Macro, Sigma 70-300 1:4-5.6 APO DG Macro, Pentax AF 360FGZ

Anvh

Link Posted 08/06/2011 - 20:51
It surely depends on the lighting conditions but i find that 1/180 doesn't give such a good balance of natural light and flash light, you will really get a flash exposure.
I often use 1/30 1/50 to get some natural light in the shot.
Stefan


K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
Last Edited by Anvh on 08/06/2011 - 20:51
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