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PostPosted: Sun Feb 13, 2011 4:30 pm 
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Location: Phnom Penh
I don't know watch it yet

http://www.youtube.com/watch?v=njqTFlMiGLQ (3:00)

i think 100 F/2.8L in this video is weather-sealing enough. :D
and 100 non L also have some water-poof,too. :wink:

P.S if anyone willing to try it at home? :twisted:

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PostPosted: Sun Feb 27, 2011 6:55 pm 
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Saw the weather this morning looked good. Then it was less good. Checked weather report, going to go downhill from there, so I went to the park before the rain hit. Got the timing wrong, started as I was on my way, and was persistent when I got there. I was only using the 100-400L, like I have many times before. No problems while out there. Got home, and let it unpacked to dry out naturally. When I later picked it up, I thought the front looked a little odd. I had condensation. Maybe it got trapped between the filter and lens, so I took off the filter. Erm... it's on the inner surface of the front element. Took the lens off the body and, blocking the rear end, I pumped it a bit to circulate the air faster. Then I blocked the rear and tried again, feeling for air leaks. I could feel some air coming out of the front of the lens when a filter isn't fitted, so I repeated that some more. That cleared the condensation quickly. I think I'll have to be a bit more careful about this in future.

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


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PostPosted: Mon Feb 28, 2011 12:29 am 
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Location: bit east of Melbourne
Bugger, hope its ok. This happened to me on my Sony 70-300, ie condensation. Obviously not in the same class of lens as the 100-400, I should have been more careful, but had done similar with the film SLR and had no issues. The SonyA100 had been back for repairs while under warranty, it failed on a hot humid day. It still intermittently plays up on hot and humid days, menu system and shutter button will not work, but comes good by itself.

This made me but it concerned me enough to make weather sealing more of a priority this time around.

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PostPosted: Mon Feb 28, 2011 7:37 am 
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Location: UK
The 100-400 isn't rated as water resistant, so I knew there was always a risk of water getting in given enough of it for long enough.

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
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PostPosted: Mon Feb 28, 2011 1:30 pm 
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Location: Belgium
maxjj wrote:
This happened to me on my Sony 70-300, ie condensation.

Just for the sake of clarity, you do mean the 70-300G SSM, not the 75-300mm (an ex-Minolta lens also known as 'the big beercan'), don't you ?

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PostPosted: Tue Mar 01, 2011 12:03 am 
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I mean the Sony SAL75300 75-300mm f4.5-5.6, sorry for the confusion. Just the basic lens that came with the twin lens kit.

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PostPosted: Tue Mar 01, 2011 2:41 pm 
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Just thought I'd ask because a lot of people (even those using them) confuse them all the time :)...

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PostPosted: Sat May 07, 2011 3:40 am 
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Joined: Tue Apr 26, 2011 4:15 pm
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Location: Kanduhar, Afghanistan
Anyone have experience with the AquaTech Sport rain cover http://www.amazon.com/AquaTech-SS-SPORT ... B000UG5J5K

I just got a T2i and know it does not have weather sealing.


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PostPosted: Sat May 07, 2011 3:48 am 
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not that one mike but I have used the thinktank version for a year now and love it. It has survived some of the wettest environs I have been to including temperate rainforests and I'm pretty rough on my gear... here is a link

http://www.thinktankphoto.com/products/ ... cover.aspx

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PostPosted: Sat May 07, 2011 10:02 am 
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Location: The Netherlands
I've looked at both the aquatech, and the thinktank, and in my eyes the thinktank wins. I have a lot of TT bags, and they are designed really well. I can only assume the same goes for the TT Hydrophobia.

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PostPosted: Fri Jun 17, 2011 8:50 am 
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As mentioned elsewhere, I was using the 7D+100-400L in typical English summer weather. That is, heavy rain showers. I decided to quit when I noticed significant contrast reduction, which on further observation was due to condensation inside the lens. I also noticed the AF accuracy dropping at that point. Even swapping a lens didn't fix everything. While I got the contrast back, the AF accuracy was somewhat more unreliable than normal. I suspect there may also have been condensation in camera too. If it is inside the lens, it isn't hard to diffuse through the camera.

So on that note, I'll have to bear in mind the 100-400L doesn't like heavy rain. This hasn't happened before in light to medium rain unless prolonged.

Right now I'm debating if I should get the 70-300L as a rain lens. It does feature a degree of sealing, although I still have some concerns the extension while zooming might be a weak point. The cost is still a lot however you look at it, but I can part fund it by trading in the 70-300DO I think. As much as I like the small size of that lens it is challenging to get great technical shots from it.

Before anyone suggests the much cheaper option of a rain cover, I don't think I could get along with one of those...

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
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PostPosted: Fri Jun 17, 2011 9:21 am 
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I have used the 7D- 70-300L in the wet and its handled it no problems. It was an important part of my reasoning for buying it.

If you can get a good price for you 70-300Do it would be a good idea.

Is it worthwhile getting Canon to give your 100-400L a look over, they may replace a rubber gasket that could improve its current weathersealing, just a thought.

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 Post subject:
PostPosted: Sat Jun 18, 2011 4:15 am 
D7000 and 70-300 was out in this for a while... The mirror/shutter mechanism was screwed anyhow, actually made it better lol
Image


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PostPosted: Mon Jul 11, 2011 7:16 am 
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Location: Winterpeg, Manisnowba, Canada
A bit of an interesting story from today...

So I was outside late at night after coming out of the pool, and I found a cabbage moth on a flower. I decided to try and photograph it, so I got all my camera gear, etc. Anyways, after a few attempts, the mosquitoes (not only is Winnipeg the Earth's coldest major city, we also have a plethora of Mosquitoes in the summer to make things worse...) started getting to me, so I threw a shirt on as my swim trunks weren't enough. Anyways, another 5 minutes or so went by, and there were still tons of the nasty blood suckers all over me, especially my legs. So, hoping to get the majority of them off, I decided to just step onto the stairs of the pool to get them off of my legs. Well, as you could tell, my stupid decision didn't have a "great" ending. I slipped on the steps, and fell right into the pool, holding my camera high up in the air. Fortunately, the camera didn't submerge under the water but water did splash all over my D7000 and my Cameralabs strap got soaked. There was lots of water on the LCDs, the flash, some of the top and back buttons and on the focus ring on the lens, but I seemed to get the water out and it's still functioning perfectly. So, was it the weather sealing that kept the water out, or perhaps just luck. Whatever it was, I'm just glad that there's nothing wrong with the camera, and that the flash is still functioning (I believe that they're very sensitive to water).

On a side note, the Cameralabs strap is drying out fine :)

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Gear: 7 Nikon Nikkor AI-S and AF-S lenses, SB-700 flash, Nikon D7000, Nikon FM, variety of accessories

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PostPosted: Mon Jul 11, 2011 7:47 pm 
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Whoops. Glad to hear it survived!
funny thing ShaunR mentions; my Sigma 10mm fisheye's manual focus ring actually turns a bit smoother now that I've (accidentally) dropped it 5 feet.

Also, Nikon D2H + Sigma 70-200 2.8 EX, and Nikon D90 + Sigma 10mm 2.8 EX:

No problem

Image

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