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Is there such thing as a tripod-mount adapter?
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PostPosted: Sat Dec 19, 2009 5:22 am    Post subject: Reply with quote
Jieffe wrote:
"The zoom lens that thinks it is a prime" ... best description you can give to it !


Indeed, and that's what most others seem to say about it:
An extremely capable lens, and it does not suffer from other lens'
formidable shortcomings.


I offer my thanks, Jieffe, as you have clearly illustrated
my intents to use this lens.


PostPosted: Sat Dec 19, 2009 4:03 pm    Post subject: Reply with quote
Jieffe wrote:
I used a cheap chinese tripod mount ring like this one : Click here to see on Ebay.

As it is too large for the lens, I reduced the inner diameter of the ring with strips of adhesive felt pad.

The trick is to cut the strip narrower than the width of the ring. Otherwise, you cannot use the full zooming range.

Hard to explain with words but I can make pictures this evening.

Excellent, Jieffe!
I had my eye on one of those for a Tamron 60-300 and thought about reducing the diameter - the glued felt idea is good, but how does it stand up to use and does it clamp tightly? I thought of wrapping the lens with self-amalgamating rubber tape, beloved of electricians everywhere, but it's good to see another take on it.


PostPosted: Sat Dec 19, 2009 11:33 pm    Post subject: Reply with quote
Farside wrote:
the glued felt idea is good, but how does it stand up to use and does it clamp tightly?

The felt is compact and keeps the lens firmly in the tripod ring, no wobbling at all. The grip is also better than electrician tape. If I had to do another one, I'd still use felt pad or cork.

I use electrician tape for other projects (securing hot shoe adapters for instance) but for this one, you'd need half a roll to get the proper thickness, not very practical ...


PostPosted: Thu Jan 14, 2010 5:20 am    Post subject: Reply with quote
Local sources of felt are decidedly too thick.
I've had to limit my efforts to clamping the tripod ring around
another lens barrel's smaller diameter, in the hopes it will compress
the felt to a more manageable thickness.
So far, it has not been a sufficient remedy, and the focus barrel
is in direct contact with the tripod ring I have purchased.

If I can find it, I suspect a cork material will offer the proper
solution to my dillemma.


PostPosted: Sun Jan 17, 2010 2:37 am    Post subject: Reply with quote
Jieffe, you're my new hero! Very Happy

The felt worked just fine.

I purchased this package of felt strips, intended for bottom of furniture
contacts to a floor:


It took some finagling on my part, clamping the collar around my Hanimar
70-140 for a few days. This was enough to compress the felt so I could
then clamp it around the 60-300, but it wasn't easy. I had to stand on the
collar, compressing it enough to thread the clamping screw into the body
of the collar's socket.

The felt strips are around 1/2-inch wide, and I cut them down to 5/16-inch
with a razor knife. I totally botched the first attempt, carving the strips
down so that the focus/zoom barrel collided with the new collar.
My second attempt was much more patient, and properly compressed
the felt before it was clamped around the lens.
The result is a secure and rigid mount, with full function of the lens.

If the felt proves to be an unsatisfactory clamp over time, I will next
go to a cork solution, but the felt is working its charms so far.

Here is the lens in all its encapsulated glory:


Focus/zoom barrel is free to operate, aperture ring is free to operate,
and the lens is suspended by a tripod ring.
It simply doesn't get any better.


PostPosted: Sun Jan 17, 2010 10:59 am    Post subject: Reply with quote
SkedAddled wrote:
Jieffe, you're my new hero!

Very Happy

One day, I'll take the time to make an article with all the DIY stuff I accomplished so far ... mainly for my studio (external flash batteries, flashgun mods, ...)


PostPosted: Sun Jan 31, 2010 4:28 am    Post subject: Reply with quote
Jieffe wrote:
One day, I'll take the time to make an article with all the DIY stuff I accomplished so far
Yes, please do!
I'm sure many of us could learn from you about these things.

Why I'm resurrecting this old thread:
Since I now have 2 cameras, I figured this is as good a time as any
to post a shot of the lens with collar, mounted to a tripod, with my
lovely new Canon EOS 40D attached. What a beautiful sight! Very Happy


This lens will most likely be included during my next visit to the museum.
I've been dying to try it out for real, and this collar solution allays
any fears I used to have about it.

I offer my thanks again to you Jieffe! Very Happy


PostPosted: Sun Jan 08, 2017 10:19 pm    Post subject: Reply with quote
SkedAddled wrote:
Jieffe wrote:
One day, I'll take the time to make an article with all the DIY stuff I accomplished so far
Yes, please do!
I'm sure many of us could learn from you about these things.

Why I'm resurrecting this old thread:
Since I now have 2 cameras, I figured this is as good a time as any
to post a shot of the lens with collar, mounted to a tripod, with my
lovely new Canon EOS 40D attached. What a beautiful sight! Very Happy


This lens will most likely be included during my next visit to the museum.
I've been dying to try it out for real, and this collar solution allays
any fears I used to have about it.

I offer my thanks again to you Jieffe! Very Happy


This solution looks great on the Tamron 60-300mm. Could you guys tell me the diameter of the lens barrel, where you mounted the collar. I will have to order one for my new vintage Tamron Adaptall 2 60-300mm.

Thanks for your inspiration. Gotta love the internet!

Morten


PostPosted: Wed Jan 18, 2017 6:57 pm    Post subject: Reply with quote
I have some info about the chinese made tripod mount ring sizes in my piece here:

http://www.pentaxforums.com/forums/114-maintenance-repair-articles/238879-modding-chinese-other-tripod-mounts-fit-eg-adaptall-lenses.html

23A is about 62mm around the barrel in front of the aperture ring; 19AH 70-210mm is about 64mm OD.
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