Looking at the front of the camera is not an indicator that the
lenses are aligned. The front of the camera - the black painted cover
and the bayonets - are not structural and do not have anything to do
with the alignment of the lenses. It is possible for the front cover
to be distorted to a degree, yet the lenses be perfectly aligned.
Underneath the front cover, is the lensboard, which as the name
implies, is the item that houses the shutter and lenses. In the E and
earlier cameras it is made of pressed and formed steel. In the F
camera is it cast aluminum. It is difficult to bend the lensboard and
the F lensboard would crack rather than bend. It is possible it could
be out of alignment. Or, the focussing struts that support the
lensboard could be bent.
todd
On 20-Sep-06, at 10:00 AM, Mike Kovacs wrote:
> Is there evidence of impact on the lens standard? The lenses have
> to be absolutely parallel mounts on the lens board. This is a very
> difficult repair requiring specialized training and tools, so I
> hope you sent it to a good repair shop.
>
> The parallax compensation moves a mask in the viewfinder to
> approximate the effect of close focusing.
>
>
>
>
> chatanooga@xxxxxxxxx wrote:
>
>> Hi Folks
>> I finally shipped out my FX to get the rewind-tripping-shutter
>> issue looked at and also to re-calibrate the focussing. The repair
>> house has come back quickly to point out that in fact the camera
>> has at some stage been a victim of gravity (my humour...) and is
>> quite a bit out of alignment. They are in Germany and are well
>> respected so I am quite happy to give them the go ahead with the
>> repairs. One thing I'm now curious about though is that I had
>> always noticed that the taking and viewing lenses were not exactly
>> parallel - they appeared to be aligned ever so slightly 'into'
>> each other. I simply thought this was to do with parallax
>> minimisation but am now wondering that is not normal and in fact
>> was a gross manifestation of the alignment probs. In short should
>> the lens pair be exacty parallel?
>> I might add I never did any 'brick-wall' tests (taking a photo of,
>> that is...) but had been fairly happy apart from wide open focussing.
>> rgds to all
>> Chat
>
>
>
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