I always have the camera in M when using the flash. Even when I want p-ttl.  
Otherwise you have no control over anything.
For some reason the camera would also only sync to 1/90 last night too.

Dario Bonazza <[email protected]> wrote:

>Basically, the logic behind this is if you want manual exposure, you
>have to 
>put the whole chain (camera+flash) on M.
>Dario
>
>----- Original Message ----- 
>From: "Dario Bonazza" <[email protected]>
>To: "Pentax-Discuss Mail List" <[email protected]>
>Sent: Saturday, December 24, 2011 12:12 PM
>Subject: Re: How do you get an AF540 to stay in manual mode?
>
>
>> Or M, of course!
>> Dario
>>
>> ----- Original Message ----- 
>> From: "Dario Bonazza" <[email protected]>
>> To: "Pentax-Discuss Mail List" <[email protected]>
>> Sent: Saturday, December 24, 2011 12:10 PM
>> Subject: Re: How do you get an AF540 to stay in manual mode?
>>
>>
>>> Set X on the mode dial. This is what mine does.
>>> Dario
>>>
>>> ----- Original Message ----- 
>>> From: "Larry Colen" <[email protected]>
>>> To: "Pentax-Discuss Mail List" <[email protected]>
>>> Sent: Saturday, December 24, 2011 10:43 AM
>>> Subject: How do you get an AF540 to stay in manual mode?
>>>
>>>
>>>> I'm trying some things out with my new ring flash adapter.  I want
>my 
>>>> AF-540 in manual mode.
>>>>
>>>> Unless I have the shoe tightened way down, it won't go into
>anything but 
>>>> p-ttl and sb.
>>>> Once  I crank down on the mount I can get it to go into M, but as
>soon 
>>>> as I start to press the shutter, it goes into p-ttl.
>>>>
>>>> Is there any way to put an AF-540 into manual mode, so that it
>stays?
>>>>
>>>> --
>>>> Larry Colen [email protected] sent from i4est
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>> rilascio: 24/12/2011
>>>>
>>>
>>>
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>>
>>
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>rilascio: 
>> 24/12/2011
>> 
>
>
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