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Canon mount, Max weights without railsupport?

Joel Arvidsson

Joel Arvidsson

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How much can you put on the canon mount without using any railsupport? Can you use a canon 70-200 with a weight of 1490g?
 
Joel Arvidsson said:
How much can you put on the canon mount without using any railsupport? Can you use a canon 70-200 with a weight of 1490g?
Click to expand...

It depends on which mount. I have the Titanium and it can handle every Canon lens ever made. The rule is simple - the moment the lens is heavier then the camera - I support the rig from the lens tripod mount. The 70-200 (I have the mkII with IS - the heaviest version) is perfectly fine and with it I still support from the camera base...

Here is the 800mm ;o)

Scarlet_Eclipse_800mm.jpg


Here is the 70-200 (hard to see thou) without lens support:

482678_10151377481419107_683285691_n.jpg


This was the key reason why I have opted for the Titanium version, It allows for a much more compact and lightweight setups...

:sifone: Peter
 
Got the al version on now. The camera is much heavier then the say 70-200 (1490). So if the ti version can keep the entire camera hanging the al should coop with 1490g you could think.
 
The mount will not bust on you, the back of the lens will. That's going to be your weak point in the situation. The heat expansion of the titanium versus the aluminum is the bigger difference. The titanium does a better job of keeping its tolerances regardless of the temperature.
 
Chris McKechnie said:
I had the AL version and constantly mounted the 70-200. Never had any issues or saw any tension on the mount. Anything much heavier though and I would get a lens support. RED mounts are strong.
Click to expand...

Which version do you use? Do you know how much it weights?
 
I think the screws that hold the interfacing mount on the lens itself will give out long before the bolts that hold the mount to the camera will.
 
Im thinking like this. If you have a 5d (950g) with a battery grip (250g without batteries). Then you put the lens support on tripod and have the camera hanging on the lenses as intended. The lenses is actually built to have a 1200g (950+250) hanging of it. The sigma lens im looking at is only 140g more.

Feels like it should be totaly safe to use it with no support. What do you think?
 
Yes, I use the Canon 70-200mm 2.8 IS all the time with the Aluminum Canon mount with no support. No issues at all in cold or hot weather. When the extra RED mount ring lock is tightened the lens is rock solid.

When I put my Nikon 400mm on the Epic I use support (15mm, 6" carbon rods in WC lightweight riser plate). I would probably hang the Epic off the back of it but the Leitex EF mount conversion I put on the lens has just a bit of movement to it and I dont trust it to hold the weight.

-dane
 
I have the canon titanium mount and I am wondering if you think it will be ok to mount the 70-200mm 2.8 IS, and an 2.0 extender from canon without support? Would be great for me to let the extra support stay at home, at an upcoming snowboard shoot, based on hiking on a splitboard.
 
It's not the weight- it's the torque. 4lb lens with the COG 2" from the mount will give the same torque (pressure on the mount) as a 2lb lens with COG 4" from the mount. Speaking practically it's not as much the weight as it is the weight, the length of the lens and the size of the front element combination...
 
What you will do with the setup matters a lot... car mounts, long front heavy lenses and offroad driving... comes to mind as a bad mix.

I think for the RED canon mount your lens will break before the mount. And before that you will stress the lens, and before that you might have a bit tilt shift focus... Normally that looks quite cool.
 
I was thinking of doing the shoot as lightweight as possible, and bring as less accessories as possible. I am thinking of using a monopod/tripod, the camera, batteries, a viewfinder and of course a ssd, nothing extra mounted on and only using the lens and extender when shooting from a tri/monopod. The batteries do not need to be mounted on the epic of course.

This would be a bad idea?
 
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