Re: [APML] using a nikon 400 f2.8

["Tom Diana" <tomdiana@means.net>]

Brian,

I had some rings custom made.  Otherwise, I would have used the Losmandy
DR177 (I have a G11).  I positioned one just in front of the tripod collar
and the other behind the (extended) lens shade.  I also have an aluminum
block bolted to the mounting plate.  This has a 1/4 in. hole bored through
it which allows me to secure the lens by its regular tripod mount.  This way
I can still rotate the camera body by temporarily loosening the ring screws.

I hope this is clear.  Feel free to contact me if you have any other
questions.

Tom

-----Original Message-----
From: Brian <focus@linkus.net>
To: astro-photo@seds.org <astro-photo@seds.org>
Date: Monday, February 12, 2001 9:56 PM
Subject: Re: [APML] using a nikon 400 f2.8


>Hi Tom,
>Thanks.  I was looking at the lens the other day and was trying to figure
>where to put the rings.  Which rings did you use buy?
>thank you
>Brian
>----- Original Message -----
>From: Tom Diana <tomdiana@means.net>
>To: <astro-photo@seds.org>
>Sent: Sunday, February 11, 2001 4:02 PM
>Subject: Re: [APML] using a nikon 400 f2.8
>
>
>> Brian,
>>
>> I'd say yes.  I have a Pentax 400/2.8 and have noticed some flexure with
>> long exposures (especially when the lens was positioned off center).  I
>> don't know if the Nikon is as massive as the Pentax (13 lb.) but it is
too
>> much for the standard tripod mount.  I've added a pair of rings and this
>> works much better.
>>
>> Tom
>>
>> -----Original Message-----
>> From: Brian <focus@linkus.net>
>> To: astro-photo@seds.org <astro-photo@seds.org>
>> Date: Friday, February 09, 2001 10:25 PM
>> Subject: [APML] using a nikon 400 f2.8
>>
>>
>> >Hello Guys,
>> >Will I need to support a Nikon 400 f2.8 lens?  It has one of those
>rotating
>> >grips.  I was thinking I would need some rings or some support.
>> >thanks guys
>> >Brian
>> >
>> >
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>>
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>
>
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