I have always understood that the difference between the original Tamron
T mount (1957) and the T-2 mount was the adjustment screws to allow
changing the radial orientation of the lens. I've only ever owned T-2
mounts and have never seen one that is not adjustable.
I also don't know why you refer to "Vivitar S1 T-mount adapters". The T
adapter has T threads (42mm) on one side for the lens and a specific
camera mount flange on the other. Therefore, a T mount is specific to a
camera and not to a lens.
Chuck Norcutt
Jeff Keller wrote:
> The Vivitar S1 T-mount adapters I have so far are basically a solid lump of
> metal with a bayonet release. There doesn't appear to be any means to align
> the lens to the camera orientation - the infinity focus mark may be at the
> bottom of the lens etc. when mounted to the camera. Fortunately they seem to
> be machined accurately enough that I've only got one lens where it isn't
> good enough. I'll probably use an generic T-mount that has screws that let
> me adjust the orientation. If would be nice to have a T-mount adapter that
> matches the lens ;-)
>
> Someone posted to the list a few years ago that Vivitar made two styles.
> Neither seem to be very common. I found two at KEH over about 3 years. They
> may not be very useful for non-vivitar lenses. I suspect the adjustable one
> was made for the 450 mirror.
>
> I think I've seen you on some of the yahoo groups which reminds me I should
> post a WTB to the vivitar group. Thanks for the reminder.
>
> -jeff
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of Chuck Norcutt
> Sent: Tuesday, December 20, 2005 11:24 AM
> To: olympus@xxxxxxxxxx
> Subject: [OM] Re: WTB $$ T-mount adapter, Vivitar Series 1 $$
>
> Adjustable? In what respect?
>
> Chuck Norcutt
>
> Jeff Keller wrote:
>
>>Does anyone have one of the adjustable Vivitar Series 1 T-mount adapters?
>>I've picked up a couple of the non-adjustable ones from KEH but have
>>never seen the adjustable one. My curiousity is almost out of control
>>... name your price. (for OM of course)
>
>
>
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