Kanon Kid wrote:
Oh by the way, you posted this a while ago, most of us here read it when u posted it b4, and we would appreciate if u dont post it again. Thanx, and have a grrrrrreat day!


Oh by the way, that's the pot calling the kettle black. (70-300 or 70-200?... again, and again, and again).

Thanks, and have a day.

Mike Farren wrote:
I have never used one of these large tele's or even a monopod but wouldn't the lens be attached to the monopod on or near it's centre of mass? Assuming that's the case you would have thought that the forces on the actual screw itself wouldn't be that great.

You would have thought that everyone involved would be insured though so no harm done. Except maybe a small increase in all our insurance premiums next year...

It's still crappy to have our 600 out for a month until we find a replacement This is the biggest accidents that's happened to one of our lenses, and of course it had to happen to the 600...stupid Murphy.

Max

Oh yeah, if you want to see the aftermath after we got the lens, it's posted here:

http://borrowlenses.smugmug.com/gallery/4337896_8tsBX

What are you doing with this lens. Id love to take it carefully appart and film it, put it on youtube or something. would be awesome...

I say smash it an put it on U-TUBE.

I've smashed stuff in the past, Nikon cameras, Epson Printers, Monitors and TVs ~ there is such an undefinable closure to the deal.

Nill Toulme wrote:
That's true as long as it's vertical and stationary. But when I sling my monopod, 1-series and 400 f/2.8 over my shoulder, it's all hanging on by that one little (hopefully-aerospace-quality) Gitzo screw.

But that's what insurance is for.


I've never thought of it that way before. Great, now I'm freaked out! :P
Okay, what's got a better sheer/torque strength than steel?

was he using an induro tripod?

For those with inquiring minds:
Gators, Crocs, and Caimans are found in Florida.
Gators and Crocs are native, Caimans were introduced.
Gators are much more plentiful in Florida, and can be found in practically every body of water (across the entire state), mostly brackish and freshwater.
Gators are the largest reptile in North America.
Largest known gator in the US was found in Louisiana @ 19'2", and it is estimated that they can reach a weight of two tons.
Gators usually live 30-50 years in the wild, and up to 60-80 years in captivity.
The name alligator comes from Spanish pioneers who called them 'el-largarto' (the lizard).
Gators usually have brown eyes, and crocs usually have green eyes.
American crocs typically live in salty estuarine water and are mainly found in southern Florida (Everglades, Fla Bay, and occasionally in the Keys).
Crocs are generally more aggressive, but more human fatalities have been from Alligators in Florida (not sure if there's actually been any croc fatalities in Florida).
Crocs kill about 2000 humans annually worldwide.
Gators have killed less than 100 humans in the last 100 years in Florida (more people die from Bee stings).
Both crocs and gators belong to the order 'Crocodilia', and both are referred to as 'Crocodilians'.
Crocodilians date back to the Triassic Period 230 million years ago...and they are living, modern dinosaurs virtually unchanged for 65 million years.
Cheers,
Scott
(S.Fla native)

Xavier Rival wrote:
Monito wrote:
Give it to a highschool physics class or photo club or middle school science class. Let them take it apart and learn something and let some good flow.


I concur.
You could even film the take apart process and put that video on YouTube. That would be so much better than these videos of people destroying expensive equipment "for the fun of it".

Remember the 500/4 IS lens assembly (canon virtual factory). A very interesting source of information for all photo enthusiasts like us.


I would like to see the insides of this! While you are at it, get a weight scale, and weight the glass - curious to see how much weight does the glass weigh in the lens! Taking it apart - and also trying to put it again together - would be a BETTER and more informative process, than bashing it around... we have seen this too many times on YouTube, from Xboxes, to computers, to midgets and you call it...

I got a brilliant idea of what would be the best thing with this lens.

Take the lens to events where you have a lot of photographers, and pretend to take photos with it, then have it dropped in comical ways so that the others photographers can see it stumble and fall, or roll down the hill, of fall in the water again and get them taped and have their reactions put on YouTube - sort of a American's Funniest Photographers...



Or give the lens to someone to hold for you while you change it with a smaller one, and while passing it to him/her, drop it on the ground (grass, so you can repeat this a few times with other unsuspecting victims...)

Man - their reactions would be priceless...

Nathan Hobbs wrote:
I want to know if it sank like a rock or if it paused for a dramatic moment as the air inside escaped out of the lens opening to be replaced with brackish water. than slowly succumbed to its watery grave much like a large cruise ship would sink.

Sort of like Titanic...?

Maybe he should of watched Robert Hanshiro's video over on Sports Shooter on how to properly shoulder a big lens!

so what else is the renter allow to rent now?

Rene

These screws are mass-produced on screw machines fed bundles of wire. It only takes a decent size nick in the wire to seriously compromise the screw's strength. Add the fact the renter probably torqued the living daylighs out of the mount to "make sure" it wouldn't loosen. This can be a recipe for disaster.

i do not understand why the lens can't be repaired. a good factory cleaning of the glass and barrel then replace the internal electronics. if it can be assembled it can be unassembled then rebuilt. if under warranty may be Canon does not want to invest the man hours for such an undertaking. if not under warranty the cost might be prohibitive. if it where my lens i would definitely not take Canon's word as the final authority. i recently purchased a lens that Canon would not repair they gave me a list of authorized Canon repair houses. there was a repair house here in my home town. they completely dis-assemble cleaned and and removed the rust from the diaphragms put it all together and wa-la my antique lens is restored. i realize that the 600mm is a more complex lens. but no one can convince me that it can not be dis-assembled cleaned and have the electrical/electronic components replaced. i guestimate that >75% of the cost of that lense is the glass which is salvageable even if the glass was salvaged and assembled in a new barrel/housing the cost would be substantially less than a new 600mm.

it ain't rocket science it's a lens. it might cost a couple grand but i'll bet that it can be rebuilt. donate that lens to me and i'll have it rebuilt.

The question is did it go into saltwater?

If it did the thing to do is to submerge it in fresh water and rinse the corrosive salt water out ASAP. And that means to throughly irrigate it many times to try and make sure every last drop of salt water is diluted out of it.

Then it stands a much better chance or repair.

I dropped a cell phone into the toilet once. I took the battery out and thoroughly rinsed both of them in the basin for a few minutes. A strip down and light vacuum of the speaker, microphone and battery. Then left them on the window sill in the sun for the day. Assembled and it fired up as good as new.

Isopropyl alcohol is also good to dilute the water out provided there are no critical or expensive parts that won't tolerate IPA.

Kanon Kid wrote:
Oh by the way, you posted this a while ago, most of us here read it when u posted it b4, and we would appreciate if u dont post it again. Thanx, and have a grrrrrreat day!

"If you don't like this thread, feel free to leave, and in the future try not to be so grumpy."

infosecgeek wrote:
Aren't primes weathersealed?

Canon calls it "drip-proof" In their lens book

um, did the crocs go on holiday while it was recovered or is a lens more important than those guys legs?