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FORUMS Canon Cameras, Lenses & Accessories Canon Accessories 
Thread started 19 May 2011 (Thursday) 15:12
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GND Buyers FAQ:

 
AEImages
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Dec 08, 2011 18:38 |  #166

tohara wrote in post #13515555 (external link)
i am thinking of buying a couple of GND's. Just curious as to what would be good for a starting point? I live on the east coast of Australia so majority of my shots will involve the ocean and a lot of sunlight. I have a big stopper and CPL already.

My first thought was to buy both hard and soft sets. But in reality will i ever use the .6 and .3 filters?

Based on my reading here 3 stop hard and soft GND filters are recommended. That is why I got those first.


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jacobsen1
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Dec 09, 2011 07:49 |  #167

depends on what your horizons look like, but I use my 3 stop hard more than any other GND on the RI coast. Check my site/flickr.


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Dec 09, 2011 09:04 |  #168

Ben do you know if the linear square polariser will work with my 5d2 or will it cause AF problems?


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jacobsen1
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Dec 09, 2011 12:21 |  #169

autofocus, what's that? :lol:

(I MF my landscapes anyway, and sorry but no I don't know)


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Dec 09, 2011 12:56 |  #170

jacobsen1 wrote in post #13518913 (external link)
autofocus, what's that? :lol:

(I MF my landscapes anyway, and sorry but no I don't know)

Haha I'm a numpty I MF landscapes too, I never even thought about that there, I just read the Lee website saying the linear affects AF and thought it was no good.

Does anyone here have experience of linear polarisers? Will it still function the same way I.e. 90 degree turns to change the amount of polarization or does the fact its linear mean its the same in every direction?


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Dec 09, 2011 14:28 |  #171

from what I've read, those variable NDs are one linear stacked with one circular. Those generally include a warning that says it might effect AF. But from what I've heard from a friend who's big into the tech end of this stuff, he says (but has never proven, so this is a MASSIVE YMMV) a linear should work the same and AF will "probably" work. I've been tempted to try it but I've never had the money to burn.


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Dec 09, 2011 15:47 |  #172

Mine was £46 delivered so ill give it a shot before deciding to sell. I don't have the foundation kit or adapter ring yet though so ill have to wait


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judyg
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Dec 15, 2011 17:02 |  #173

judyg wrote in post #13510270 (external link)
The Lee Foundation Kit filter holder is available on eBay for $99:

http://www.ebay.com …m1e691ef7bb#ht_​549wt_1141 (external link)

I just bought one...I hope it's the real thing.

Just received this today. It looks like a knock-off, which is not terribly surprising. On the other hand, it's a pretty good knock off, so I'll probably go ahead and use it.




  
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Dec 16, 2011 01:07 |  #174

judyg wrote in post #13550967 (external link)
Just received this today. It looks like a knock-off, which is not terribly surprising. On the other hand, it's a pretty good knock off, so I'll probably go ahead and use it.

care to post some pics of it? interested in obtaining another holder for back up purposes.


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Dec 16, 2011 09:08 |  #175

Managed to source a Lee Big Stopper yesterday at conns camera in Ireland. Well chuffed


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Dec 16, 2011 12:11 |  #176

xpfloyd wrote in post #13553918 (external link)
Managed to source a Lee Big Stopper yesterday at conns camera in Ireland. Well chuffed

jealous. i need a uk/europe connection.


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Jimstuy
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Dec 22, 2011 13:47 |  #177

Thanks for the info Ben and fellow POTNers. I am glad I found this thread and your website. I just received my LEE set of three 4''X6'' hard GND resin filters (1,2,3 stops), and am anxious to test them out.

I looked through a lot of GND pictures you guys take (amazing!) and I have a question:

Most of the images mention using a 2 or 3 stop Hard/Soft GND filter, I believe Ben uses a CP most of the time as well for his shots so that's an extra 2 stop reduction for the entire image. If I only use a GND filter, say, to shoot a beach and cover up the sky potion to reduce the brightness, wouldn't the uncovered portion of the picture be saturated because they have no light reduction?

e.g: If normal metering gives me, say, at f/8 1/60s shutter speed, I put on the GND 3 stop filter, and goto manual mode, and dial up 1/6s shutter speed at the same f-stop.

Do you stack a normal ND filter on top of the GND/CP filter to not saturate the image?
Thanks for any feedback!

Jim


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Dec 22, 2011 14:30 |  #178

judyg wrote in post #13550967 (external link)
Just received this today. It looks like a knock-off, which is not terribly surprising. On the other hand, it's a pretty good knock off, so I'll probably go ahead and use it.

daveyboi wrote in post #13552977 (external link)
care to post some pics of it? interested in obtaining another holder for back up purposes.

+1, how can you tell it's a knock off? I'd love to find a knock off source (for a reduced price)...

Jimstuy wrote in post #13585650 (external link)
Most of the images mention using a 2 or 3 stop Hard/Soft GND filter, I believe Ben uses a CP most of the time as well for his shots so that's an extra 2 stop reduction for the entire image. If I only use a GND filter, say, to shoot a beach and cover up the sky potion to reduce the brightness, wouldn't the uncovered portion of the picture be saturated because they have no light reduction?

short answer: no
long answer: no, because when you use GNDs the dynamic range in the image is so broad, the sky is so much brighter than the foreground you can't capture both at the same camera settings. You'd need one exposure for the foreground then another 2~3 stops shorter for the sky. The filters just makes it work.

Do you stack a normal ND filter on top of the GND/CP filter to not saturate the image?

the CP changes the saturation. NDs change the length of the exposure. GNDs change a portion of the images exposure to "compress" the range enough that a camera can capture it all in a single image. If I need a longer exposure than I'm getting with the CP and GND, I'll add a second GND but shove it all the way in (making it work as if it were a 4x4 ND, I'm too cheap to own both).


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Jimstuy
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Dec 22, 2011 18:23 |  #179

Awesome, thanks for the clarification!


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Dec 23, 2011 10:32 |  #180

I've had a 3 stop hard Lee GND and filter holder, but I have no clue how to use it correctly....... I've read a lot and watched a lot of youtube videos, but the pics aren't coming out as good as I want it. Any suggestions? Thanks.




  
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