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Author Topic: Lens mounts seals  (Read 1905 times)

Nobody

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Lens mounts seals
« on: July 19, 2013, 12:28:43 PM »
I have just received a Canon EF 100-400mm f/4.5-5.6L IS USM but I noticed the mount is lacking the rubber seal that my EF 28-300mm f/3.5-5.6L IS USM has fitted is this correct?
« Last Edit: July 19, 2013, 12:33:11 PM by Nobody »

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Lens mounts seals
« on: July 19, 2013, 12:28:43 PM »

insanitybeard

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Re: Lens mounts seals
« Reply #1 on: July 19, 2013, 12:43:32 PM »
My Canon lens brochure does NOT list the 100-400L as 'Dust and moisture resistant', so it is correct, it would not have the seal on the lens mount. I believe neuro has mentioned previously (if I recall correctly) that despite this, this lens does have seals on it's switches and zoom/focus rings.

(cue jokes about the 'dust pump'  ;) )
« Last Edit: July 19, 2013, 12:46:55 PM by insanitybeard »
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Nobody

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Re: Lens mounts seals
« Reply #2 on: July 19, 2013, 12:55:23 PM »
Thanks for taking time to reply and the information.

silvestography

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Re: Lens mounts seals
« Reply #3 on: July 27, 2013, 02:38:32 PM »
My Canon lens brochure does NOT list the 100-400L as 'Dust and moisture resistant', so it is correct, it would not have the seal on the lens mount. I believe neuro has mentioned previously (if I recall correctly) that despite this, this lens does have seals on it's switches and zoom/focus rings.

(cue jokes about the 'dust pump'  ;) )

There was that guy who started a kickstarter for an external rear gasket that you could slap onto a partially sealed lens like the 100-400 to ensure better sealing, but that has since ended (he got his funds), and I have no clue where you'd actually go about buying one. It would certainly be useful on the 100-400 though.
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paul13walnut5

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Re: Lens mounts seals
« Reply #4 on: July 27, 2013, 03:28:25 PM »
My Canon lens brochure does NOT list the 100-400L as 'Dust and moisture resistant', so it is correct, it would not have the seal on the lens mount. I believe neuro has mentioned previously (if I recall correctly) that despite this, this lens does have seals on it's switches and zoom/focus rings.

(cue jokes about the 'dust pump'  ;) )

I prefer jokes about the mould pump.

neuroanatomist

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Re: Lens mounts seals
« Reply #5 on: July 27, 2013, 07:04:47 PM »
My Canon lens brochure does NOT list the 100-400L as 'Dust and moisture resistant', so it is correct, it would not have the seal on the lens mount. I believe neuro has mentioned previously (if I recall correctly) that despite this, this lens does have seals on it's switches and zoom/focus rings.

Correct.  FYI, my info on the partially-sealed status of the 100-400L comes from Chuck Westfall at Canon USA.
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rumorzmonger

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Re: Lens mounts seals
« Reply #6 on: July 27, 2013, 07:59:14 PM »

There was that guy who started a kickstarter for an external rear gasket that you could slap onto a partially sealed lens like the 100-400 to ensure better sealing, but that has since ended (he got his funds), and I have no clue where you'd actually go about buying one.

The more I read stories like this, the more I think it should be called "fraudstarter"...
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Re: Lens mounts seals
« Reply #6 on: July 27, 2013, 07:59:14 PM »