p.3 #2 · IS unit of RF 100-500mm not parking - a mechanical weakness?
bobbytan wrote:
Don't know what that's about but I (and most other owners) have no issues with the RF 100-500.
To save you reading the earlier posts to which it relates, the IS system of the 100-500mm needs to be powered to stop it being loose and rattling from side to side with possibly damaging consequences. My 100-500mm is performing very well, but I haven't had to ship it to customers like Lensrentals has.
p.3 #3 · IS unit of RF 100-500mm not parking - a mechanical weakness?
RCicala wrote:
Yes, both ways. It's not a subtle thing. You wouldn't miss it.
But let's keep in perspective:
It only happened during shipping, and it's rare even then.
Until we take a couple apart we won't know exactly which element cracked, and why. Might not even know after we take them apart. But let's not rush to judgement.
p.3 #5 · IS unit of RF 100-500mm not parking - a mechanical weakness?
Canon Warranty only applies to manufacturing defects, and does not apply to any form of physical damage.
If there's a need to send the lens to Canon Factory Service, for a legitimate reason, and "this" anomaly occurs due to being "bounced around", or dropped in shipping, but with no evident physical damage to the shipping box, "you" will have no way to prove that it was caused by the Carrier.----and Canon has traditionally used FED X for return shipping.
p.3 #6 · IS unit of RF 100-500mm not parking - a mechanical weakness?
cpe1991 wrote:
To save you reading the earlier posts to which it relates, the IS system of the 100-500mm needs to be powered to stop it being loose and rattling from side to side with possibly damaging consequences. My 100-500mm is performing very well, but I haven't had to ship it to customers like Lensrentals has.
I think the R5/6 is the same. IBIS needs to be powered up.
p.3 #7 · IS unit of RF 100-500mm not parking - a mechanical weakness?
Zenon Char wrote:
I think the R5/6 is the same. IBIS needs to be powered up.
This isn't about the operation of the lenses on the bodies, it's about RF lenses with IS not "parking" or locking when powered off or detached from the body.
p.3 #8 · IS unit of RF 100-500mm not parking - a mechanical weakness?
Experiment on IS parking of 100-400mm II vs 100-500mm.
Remove 100-400mm II from 5DSR - parked whether camera was on or off.
Remove 100-400mm II from 5R - parked when camera had been turned off. Rattles loudly when camera was left on and IS unit shakes from side to side.
RF 100-500mm - rattles with a muffled sound when off the camera.
Conclusions. 100-500mm has (rubber) shock absorber to protect unparked IS unit against damage.
100-400mm II doesn't have the protection when removed from R5 when on so make sure the camera is off when removing lens.
p.3 #9 · IS unit of RF 100-500mm not parking - a mechanical weakness?
highdesertmesa wrote:
This isn't about the operation of the lenses on the bodies, it's about RF lenses with IS not "parking" or locking when powered off or detached from the body.
Sorry I meant IBIS is not parked either when powered I’d off but I should have not changed the subject.
p.3 #10 · IS unit of RF 100-500mm not parking - a mechanical weakness?
cpe1991 wrote:
Experiment on IS parking of 100-400mm II vs 100-500mm.
Remove 100-400mm II from 5DSR - parked whether camera was on or off.
Remove 100-400mm II from 5R - parked when camera had been turned off. Rattles loudly when camera was left on and IS unit shakes from side to side.
RF 100-500mm - rattles with a muffled sound when off the camera.
Conclusions. 100-500mm has (rubber) shock absorber to protect unparked IS unit against damage.
100-400mm II doesn't have the protection when removed from R5 when on so make sure the camera is off when removing lens.
Good info about the 100-400. Even though the manuals say to turn power off before exchanging lenses I didn't using EF bodies and lenses. IS shut off after 2 seconds when AF stops and I made sure that happened first.
An EF lens IS continues to run on R bodies until it times out (45 seconds minimum), you power it off or pressing the menu or playback button. An RF lens also continues to run however pressing the menu or playback button manuals has no effect. The manual also says to turn IS off but since it doesn't lock you would think it probably wouldn't matter. It believes it is important it parks first.
The thing I started to make myself do was remember to power off an R/RF combo before swapping. Also making sure the EF IS was off when I used it on an R body. It wasn't easy.
I imagine part of the warning is possible electrical issues at the pins when the camera is powered up but I never read about it being an issue since going digital in 2005.
p.3 #11 · IS unit of RF 100-500mm not parking - a mechanical weakness?
arbitrage wrote:
They will need to start shipping them attached to a powered on R5/R6...
Interesting notion. Easy to envision a little rear cap with a battery and control circuit to provide just that for a week. I wonder what the power consumption is.
p.3 #12 · IS unit of RF 100-500mm not parking - a mechanical weakness?
EB-1 wrote:
I surely hope that LensRentals decides to use extra padding in future 100-500 shipments.
EBH
And one must be cautious about selecting padding. A stiff foam custom cut will ensure that the item doesn't "crash" against the wall or case, but the stiff foam may transmit excess acceleration. A softer cushion may be needed to suspend the lens.
p.3 #14 · IS unit of RF 100-500mm not parking - a mechanical weakness?
arbitrage wrote:
They will need to start shipping them attached to a powered on R5/R6...
Why do you think they are safer when powered on? I doubt that. You would need to do the drop test (shipping study) both ways. It would be rather difficult to simulate the powered drop test without invalidating the results.
p.3 #15 · IS unit of RF 100-500mm not parking - a mechanical weakness?
Optics Patent wrote:
And one must be cautious about selecting padding. A stiff foam custom cut will ensure that the item doesn't "crash" against the wall or case, but the stiff foam may transmit excess acceleration. A softer cushion may be needed to suspend the lens.
No amount of padding can protect from the effect of "shake".
What's needed is a gyrostabilizer shipping container----A parcel Stabilizer to protect the lens Stabilizer.
p.3 #16 · IS unit of RF 100-500mm not parking - a mechanical weakness?
Holy cow! 😱
RCicala wrote:
Yes, both ways. It's not a subtle thing. You wouldn't miss it.
But let's keep in perspective:
It only happened during shipping, and it's rare even then.
Until we take a couple apart we won't know exactly which element cracked, and why. Might not even know after we take them apart. But let's not rush to judgement.
p.3 #17 · IS unit of RF 100-500mm not parking - a mechanical weakness?
EB-1 wrote:
Why do you think they are safer when powered on? I doubt that. You would need to do the drop test (shipping study) both ways. It would be rather difficult to simulate the powered drop test without invalidating the results.
EBH
EBH
For the same reason you are safer wearing a seat belt in a car in a crash. You are constrained against being thrown against a hard surface on rapid deceleration.
p.3 #18 · IS unit of RF 100-500mm not parking - a mechanical weakness?
Optics Patent wrote:
Interesting notion. Easy to envision a little rear cap with a battery and control circuit to provide just that for a week. I wonder what the power consumption is.
Actually, if feasible, that would likely be the most cost effective method.
