Tripod collars by size?
 

All of the tripod collars I can find for sale list the lens they are
intended to grip, but never the size. I am quite certain that there
has never been a tripod collar for the teleconverter I want to grip,
so I was hoping to shop by size and "wrap" the teleconverter to make
it fit.


--
Please reply to: | No nation is drunken where wine is cheap.
pciszek at panix dot com | --Thomas Jefferson

Tripod collars by size?
 

On 10/12/2012 7:01 PM, Paul Ciszek wrote:
All of the tripod collars I can find for sale list the lens they are
intended to grip, but never the size. I am quite certain that there
has never been a tripod collar for the teleconverter I want to grip,
so I was hoping to shop by size and "wrap" the teleconverter to make
it fit.




Whats more I don't think there would be enough strength in the converter
shell to enable the collar to tighten.

Tripod collars by size?
 

On Mon, 10 Dec 2012 19:31:03 +1100, Rob
wrote:

On 10/12/2012 7:01 PM, Paul Ciszek wrote:
All of the tripod collars I can find for sale list the lens they are
intended to grip, but never the size. I am quite certain that there
has never been a tripod collar for the teleconverter I want to grip,
so I was hoping to shop by size and "wrap" the teleconverter to make
it fit.




Whats more I don't think there would be enough strength in the converter
shell to enable the collar to tighten.

What's wrong with clamping on to the lens with which you are using the
teleconverter? It is almost certainly made to be supported in this
way.
--

Regards,

Eric Stevens

Tripod collars by size?
 

On 10/12/2012 7:31 PM, Rob wrote:
On 10/12/2012 7:01 PM, Paul Ciszek wrote:
All of the tripod collars I can find for sale list the lens they are
intended to grip, but never the size. I am quite certain that there
has never been a tripod collar for the teleconverter I want to grip,
so I was hoping to shop by size and "wrap" the teleconverter to make
it fit.




Whats more I don't think there would be enough strength in the converter
shell to enable the collar to tighten.



Oh BTW what lens/TC????

Tripod collars by size?
 

In article ,
Eric Stevens wrote:
On Mon, 10 Dec 2012 19:31:03 +1100, Rob
wrote:

On 10/12/2012 7:01 PM, Paul Ciszek wrote:
All of the tripod collars I can find for sale list the lens they are
intended to grip, but never the size. I am quite certain that there
has never been a tripod collar for the teleconverter I want to grip,
so I was hoping to shop by size and "wrap" the teleconverter to make
it fit.

Whats more I don't think there would be enough strength in the converter
shell to enable the collar to tighten.

What's wrong with clamping on to the lens with which you are using the
teleconverter? It is almost certainly made to be supported in this
way.

That is in fact my plan B, but the reason is simple: The center of gravity
of the camera-teleconverter-lens combo is closer to the teleconverter than
to the only grippable area of the lens.

The lens is a Tamron 55BB mirror lens. The 55BB, unlike its predecessor,
was not designed to have a mounting bracket. Focusing rotates almost the
entire barrel except for a portion approx. 3/8" long. This part of the
lens is slightly forward of the center of balance of the camera+lens combo
even when there is no teleconverter, and is even further forward of the
center when the teleconverter is added. The teleconverter is a Tamron
140F; since they no longer sell the adaptall mount version, I had to get
a Nikon mount version and add an adapter, but it seems to work. (The
Tamron 140F was meant to work hand-in-glove with Tamron lenses like the
55BB; that's why I went to the trouble.) The camera is an Olympus OM-D.

I think the 140F is sturdy enough to be gripped. If the mounts on either
end of it can't hold up the weight, then I am screwed no matter where I
grip the combination. I do think it makes more sense to hang the camera
off of one side of the teleconverter and the mirror lens off of the other
side than it does to either hang the whole thing one-sided off of the
camera or the lens.

--
Please reply to: | No nation is drunken where wine is cheap.
pciszek at panix dot com | --Thomas Jefferson

Tripod collars by size?
 

On Mon, 10 Dec 2012 15:17:39 +0000 (UTC), (Paul Ciszek)
wrote:
:
: In article ,
: Eric Stevens wrote:
: On Mon, 10 Dec 2012 19:31:03 +1100, Rob
: wrote:
:
: On 10/12/2012 7:01 PM, Paul Ciszek wrote:
: All of the tripod collars I can find for sale list the lens they are
: intended to grip, but never the size. I am quite certain that there
: has never been a tripod collar for the teleconverter I want to grip,
: so I was hoping to shop by size and "wrap" the teleconverter to make
: it fit.
:
: Whats more I don't think there would be enough strength in the converter
: shell to enable the collar to tighten.
:
: What's wrong with clamping on to the lens with which you are using the
: teleconverter? It is almost certainly made to be supported in this
: way.
:
: That is in fact my plan B, but the reason is simple: The center of gravity
: of the camera-teleconverter-lens combo is closer to the teleconverter than
: to the only grippable area of the lens.
:
: The lens is a Tamron 55BB mirror lens. The 55BB, unlike its predecessor,
: was not designed to have a mounting bracket. Focusing rotates almost the
: entire barrel except for a portion approx. 3/8" long. This part of the
: lens is slightly forward of the center of balance of the camera+lens combo
: even when there is no teleconverter, and is even further forward of the
: center when the teleconverter is added. The teleconverter is a Tamron
: 140F; since they no longer sell the adaptall mount version, I had to get
: a Nikon mount version and add an adapter, but it seems to work. (The
: Tamron 140F was meant to work hand-in-glove with Tamron lenses like the
: 55BB; that's why I went to the trouble.) The camera is an Olympus OM-D.
:
: I think the 140F is sturdy enough to be gripped. If the mounts on either
: end of it can't hold up the weight, then I am screwed no matter where I
: grip the combination. I do think it makes more sense to hang the camera
: off of one side of the teleconverter and the mirror lens off of the other
: side than it does to either hang the whole thing one-sided off of the
: camera or the lens.

You're also screwed if the wall of the TC deforms under the force applied by
the collar or by the lens. It sounds as though you're pushing the envelope,
whatever you do. It might be safer to place a large beanbag (or a small
pillow) over the tripod head, lay the camera/lens assembly on it, and use a
couple of bungee cords to secure it to the tripod. It wouldn't be pretty, but
you'd know you weren't stressing any components beyond their design capacity.

Bob

Tripod collars by size?
 

On Mon, 10 Dec 2012 11:00:35 -0500, Robert Coe wrote:

On Mon, 10 Dec 2012 15:17:39 +0000 (UTC), (Paul Ciszek)
wrote:
:
: In article ,
: Eric Stevens wrote:
:On Mon, 10 Dec 2012 19:31:03 +1100, Rob
:wrote:
:
:On 10/12/2012 7:01 PM, Paul Ciszek wrote:
: All of the tripod collars I can find for sale list the lens they are
: intended to grip, but never the size. I am quite certain that there
: has never been a tripod collar for the teleconverter I want to grip,
: so I was hoping to shop by size and "wrap" the teleconverter to make
: it fit.
:
:Whats more I don't think there would be enough strength in the converter
:shell to enable the collar to tighten.
:
:What's wrong with clamping on to the lens with which you are using the
:teleconverter? It is almost certainly made to be supported in this
:way.
:
: That is in fact my plan B, but the reason is simple: The center of gravity
: of the camera-teleconverter-lens combo is closer to the teleconverter than
: to the only grippable area of the lens.
:
: The lens is a Tamron 55BB mirror lens. The 55BB, unlike its predecessor,
: was not designed to have a mounting bracket. Focusing rotates almost the
: entire barrel except for a portion approx. 3/8" long. This part of the
: lens is slightly forward of the center of balance of the camera+lens combo
: even when there is no teleconverter, and is even further forward of the
: center when the teleconverter is added. The teleconverter is a Tamron
: 140F; since they no longer sell the adaptall mount version, I had to get
: a Nikon mount version and add an adapter, but it seems to work. (The
: Tamron 140F was meant to work hand-in-glove with Tamron lenses like the
: 55BB; that's why I went to the trouble.) The camera is an Olympus OM-D.
:
: I think the 140F is sturdy enough to be gripped. If the mounts on either
: end of it can't hold up the weight, then I am screwed no matter where I
: grip the combination. I do think it makes more sense to hang the camera
: off of one side of the teleconverter and the mirror lens off of the other
: side than it does to either hang the whole thing one-sided off of the
: camera or the lens.

You're also screwed if the wall of the TC deforms under the force applied by
the collar or by the lens. It sounds as though you're pushing the envelope,
whatever you do. It might be safer to place a large beanbag (or a small
pillow) over the tripod head, lay the camera/lens assembly on it, and use a
couple of bungee cords to secure it to the tripod. It wouldn't be pretty, but
you'd know you weren't stressing any components beyond their design capacity.

Bob

Try the muffler Shop.

Tripod collars by size?
 

Paul Ciszek wrote:
In article ,
Eric Stevens wrote:
On Mon, 10 Dec 2012 19:31:03 +1100, Rob
wrote:

On 10/12/2012 7:01 PM, Paul Ciszek wrote:
All of the tripod collars I can find for sale list the lens they are
intended to grip, but never the size. I am quite certain that there
has never been a tripod collar for the teleconverter I want to grip,
so I was hoping to shop by size and "wrap" the teleconverter to make
it fit.

Whats more I don't think there would be enough strength in the converter
shell to enable the collar to tighten.

What's wrong with clamping on to the lens with which you are using the
teleconverter? It is almost certainly made to be supported in this
way.

That is in fact my plan B, but the reason is simple: The center of gravity
of the camera-teleconverter-lens combo is closer to the teleconverter than
to the only grippable area of the lens.

The lens is a Tamron 55BB mirror lens. The 55BB, unlike its predecessor,
was not designed to have a mounting bracket. Focusing rotates almost the
entire barrel except for a portion approx. 3/8" long. This part of the
lens is slightly forward of the center of balance of the camera+lens combo
even when there is no teleconverter, and is even further forward of the
center when the teleconverter is added. The teleconverter is a Tamron
140F; since they no longer sell the adaptall mount version, I had to get
a Nikon mount version and add an adapter, but it seems to work. (The
Tamron 140F was meant to work hand-in-glove with Tamron lenses like the
55BB; that's why I went to the trouble.) The camera is an Olympus OM-D.

I think the 140F is sturdy enough to be gripped. If the mounts on either
end of it can't hold up the weight, then I am screwed no matter where I
grip the combination. I do think it makes more sense to hang the camera
off of one side of the teleconverter and the mirror lens off of the other
side than it does to either hang the whole thing one-sided off of the
camera or the lens.

What you want is a bracket which will let you screw the camera via its
tripod mount to one end, and a tripod collar round the lens to
other. Then beneath the bracket at a point you choose (they have slots
which to allow flexible positioning of the mounts) you mount the
tripod. Such brackets are used for lots of things like mounting
flashes, video lights, microphones, camera pairs for stereo. etc..

--
Chris Malcolm

Tripod collars by size?
 

In article ,
Chris Malcolm wrote:

What you want is a bracket which will let you screw the camera via its
tripod mount to one end, and a tripod collar round the lens to
other. Then beneath the bracket at a point you choose (they have slots
which to allow flexible positioning of the mounts) you mount the
tripod. Such brackets are used for lots of things like mounting
flashes, video lights, microphones, camera pairs for stereo. etc..

So, where do I get one that can grip a 2.66 inch cylinder? None are
sold by size, only the model of lens they are meant to grip.

Also, the teleconverter has a tab sticking off to one side that the
bracket would have to dodge.

--
Please reply to: | No nation is drunken where wine is cheap.
pciszek at panix dot com | --Thomas Jefferson

Tripod collars by size?
 

On Tue, 11 Dec 2012 14:39:14 +0000 (UTC), Paul Ciszek wrote:

In article ,
Chris Malcolm wrote:

What you want is a bracket which will let you screw the camera via its
tripod mount to one end, and a tripod collar round the lens to
other. Then beneath the bracket at a point you choose (they have slots
which to allow flexible positioning of the mounts) you mount the
tripod. Such brackets are used for lots of things like mounting
flashes, video lights, microphones, camera pairs for stereo. etc..

So, where do I get one that can grip a 2.66 inch cylinder? None are
sold by size, only the model of lens they are meant to grip.

Also, the teleconverter has a tab sticking off to one side that the
bracket would have to dodge.

Think outside the box, visit an auto muffler (silencer) shop,
they stock all sorts of clamps, do a little modifying.