7D Mkii detaching from 2X convertor: Has anyone experienced or have thoughts to offer? I use a two strap harness to lug around my 7dMkii fitted with a 400mm 2.8 and 2 X convertor. One...

brianmen Loc: Sydney Australia

Has anyone experienced or have thoughts to offer?
I use a two strap harness to lug around my 7dMkii fitted with a 400mm 2.8 and 2 X convertor.
One strap goes to the camera the other to the tripod mount on the lens. I bias the straps so the weight is mainly taken by the lens strap. Tonight i experienced the camera detaching from the convertor which was attached to the lens as i started walking after taking some shots. I figured it must have been something i did to bump the release button so i reattached and made sure it was firmly locked. Then it happened again but this time i caught it before it completely detached. I know for sure it was firmly locked on when I refitted the convertor and lens.
I did not have any problem when it was just the lens fitted to the camera.
Does anyone have any thoughts please?

Leitz Loc: Solms

brianmen wrote:

Has anyone experienced or have thoughts to offer? ... (show quote)

Is the converter detaching from the camera, or is the lens detaching from the converter?

brianmen Loc: Sydney Australia

Sorry poor explanation. The convertor is detaching from the camera. Thanks Leitz.

imagemeister Loc: mid east Florida

brianmen wrote:

Has anyone experienced or have thoughts to offer? ... (show quote)

It would highly behove you to have a "splint" connecting the camera body to the tripod mount as shown here - http://www.ebay.com/itm/Velbon-Aluminum-Telephoto-Lens-Support-Splint-Plate-SPT-1-For-DSLR-Camera-340g-/140971397996?pt=LH_DefaultDomain_0&hash=item20d28cd36c#ht_2636wt_1325 - or below

Capn_Dave

A strap or something must be hitting the release button. I can't twist the converter off unless the release is hit firmly. It just won't release itself. If it did then jusat any lens could become disconnected at any moment. Can you send a photo with you and the camera hooked together? I cannot picture what you are telling me as to the arraignment

Leitz Loc: Solms

brianmen wrote:

Has anyone experienced or have thoughts to offer? ... (show quote)

I agree with imagemeister's suggestion, but have to ask, do you have a third party converter? I would expect a Canon converter to support the weight of the camera.

Edit: I may be in error, but I see no need to attach a strap to the camera also.

imagemeister Loc: mid east Florida

imagemeister wrote:

It would highly behove you to have a "splint" connecting the camera body to the tripod mount as shown here - http://www.ebay.com/itm/Velbon-Aluminum-Telephoto-Lens-Support-Splint-Plate-SPT-1-For-DSLR-Camera-340g-/140971397996?pt=LH_DefaultDomain_0&hash=item20d28cd36c#ht_2636wt_1325 - or below

The one drawback to this set up is the WHOLE assembly must be turned to do a vertical shot .....just sayin

brianmen Loc: Sydney Australia

Thanks imagemister. I am shooting hand held so I am reluctant to add anymore weight to the kit. At 65 I am finding hand held a real challenge and occasionally I use a gimble on a monopod but it still doesnt give me the instant response i want. I will probably need to improve my skill in the gimble use area as hand held may get beyond me in a few years. Thanks for sharing your idea with me.

brianmen Loc: Sydney Australia

Hi Leitz. Its the real deal a Canon original. I use the 2 straps as it balances the camera in a horizontal position when i am walking with it. I deliberately have the Lens strap taking most of the weight to avoid tension on the camera body. It works really well for me and gives my arms a breather when I am not shooting. Thanks for your thoughts.

imagemeister Loc: mid east Florida

brianmen wrote:

Thanks imagemister. I am shooting hand held so I am reluctant to add anymore weight to the kit. At 65 I am finding hand held a real challenge and occasionally I use a gimble on a monopod but it still doesnt give me the instant response i want. I will probably need to improve my skill in the gimble use area as hand held may get beyond me in a few years. Thanks for sharing your idea with me.

Hmmmm, 400 2.8 W/2x handheld ----You're a better man than I !

Gary Truchelut Loc: Coldspring, TX

I use the same set up but only use the lens strap which attaches on each side of the lens and has swivels. I tried using both straps when I first got the lens and it was just too clumsy for me and I kept having to fool around with them. With the one strap attached to the lens, I put the strap over my head and under my right arm. I have it's length adjusted so that when I hold it to my eye with my left elbow against my side, the camera eyepiece is right at my eye. I have captured many good shots from a boat this way. Never had the the separation problem you're having.

brianmen Loc: Sydney Australia

Thanks Gary. Is your set up commercially available or did you make it yourself please? cheers

Don, the 2nd son Loc: Crowded Florida

brianmen wrote:

Has anyone experienced or have thoughts to offer? ... (show quote)

I have had a similar problem with the 300 f/4 L and 1.4xii on my 60D and have used a splint to prevent a heart attack. The catch button on the 1.4 (Canon brand) is a bit tricky and I was not always getting it "clicked in." I always have to fiddle with that catch, the pin looks a tiny bit deformed. The splint is quite light and gives me piece of mind. I figure that was simpler than sending the rig to Canon. Don

RRS Loc: Not sure

imagemeister wrote:

It would highly behove you to have a "splint" connecting the camera body to the tripod mount as shown here - http://www.ebay.com/itm/Velbon-Aluminum-Telephoto-Lens-Support-Splint-Plate-SPT-1-For-DSLR-Camera-340g-/140971397996?pt=LH_DefaultDomain_0&hash=item20d28cd36c#ht_2636wt_1325 - or below

Just a question, what does the hose clamp hold?

SharpShooter Loc: NorCal

brianmen wrote:

Sorry poor explanation. The convertor is detaching from the camera. Thanks Leitz.

Brian, is the multiplier a Canon brand as well?
SS