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Re: [Rollei] Question to the group
- Subject: Re: [Rollei] Question to the group
- From: Sven Keller <nc-kellersv2
- Date: Sat, 18 May 2002 23:25:40 +0200
So, here is what I eventually found out. That the flash did
not fire was the fault of the lens!
Pentax lenses are designed such, that in the moment before
the shutter is opened, a little lever 'releases' the iris and
the iris blades are then closed to the preset f-stop by means
of an internal spring. On this particular lens some grease
had gotten onto the iris mechanism and made it a little stiff
in operation. When the lever let go the iris, it simply took
the spring 'a while' to close the blades, to the effect that
the TTL meter took its measurement with the iris still
(almost) open and consequentially did not fire the flash.
The reason why I think this could not have happened on a
Rollei is that on Rollei QBM lenses the iris is forced to
close by a push rod.
- ---- Original message ----
>Datum: Fri, 17 May 2002 18:03:41 -0400
>Von: Phil Stiles <stiles >
>Betreff: Re: [Rollei] Question to the group
>An: rollei us
>Sven Keller wrote:
>> Well, I have already found the mistake. But it took me a
>> while and I thought I present it to the group as a puzzle
>> (and as a 'thread-starter').
>> As I said, it had nothing to do with the flash nor with
>> electrical conections. The camera was a Pentax LX, the
>> working in TTL mode and the wedding took place near
>> And it cannot happen on Rolleis.
> I don't really know the Pentax LX, but the picture
>shows several flash sync options, and my guess you had the
>However, folks were saying "your flash isn't working." The
>would still have the flash going off. My guess is that the
>rather camera specific.
> By the way, when I do a wedding, I check the flash
and sync by firing
>some shots with the back open, just to be sure I see the
shutter all the
>way open when the flash goes off. All of my problems with
>the shot have been flash problems, so I'm quite sensitive to
>issues. Guide numbers are more accurate in small rooms with
>bounce light, too. Get into a large reception hall, and you
>up another stop.
> Phil Stiles NH USA
>> ---- Original message ----
>> >Datum: Fri, 17 May 2002 12:08:01 -0700
>> >Von: "Kotsinadelis, Peter (Peter)" <peterk >
>> >Betreff: RE: [Rollei] Question to the group
>> >An: "'rollei o-
>> >Gee, I forgot the obvious. Have you tried another flash to
>> eliminate that?
>> >-----Original Message-----
>> >From: Kotsinadelis, Peter (Peter)
>> >Sent: Friday, May 17, 2002 11:32 AM
>> >To: 'rollei
>> >Subject: RE: [Rollei] Question to the group
>> >If connected to the PC connector maybe the PC connector is
>> not connected
>> >internal or the pin is bent.
>> >If the shoe, you need to get the x-contact reapaired.
>> be a
>> >wire/connection or something else.
>> >Peter K
>> >-----Original Message-----
>> >From: Sven Keller [ mailto:email@example.com
>> ><mailto:nc-kellersv2 ]
>> >Sent: Friday, May 17, 2002 11:08 AM
>> >To: rollei us
>> >Subject: [Rollei] Question to the group
>> >I recently took some photographs at a friend's wedding,
>> >I attended as a guest. Somebody else did the 'official'
>> >wedding shots. Not to embarrass the professional
>> >photographer ;-) I did not take a MF Rolleiflex, but a
>> >Pentax SLR and a lens I had not used for a while (a
>> >also took a small TTL flash. When shooting, I was
>> >flash is not working'. I played with it a little (under a
>> >table) but could not find any obvious mistake. With the
>> >aperture set to f 8 or 11, the flash should have clearly
>> >firing, although it was not dark, only late afternoon.
>> >Question to the group - what was wrong?
>> >Rollei content: I should have taken a 35mm Rollei SLR, as
>> >this failure mode cannot happen on a Rollei.
>> >Sven Keller