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LEE "Square" Circular Polarising Filter

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Thread started 03 Jun 2010 (Thursday) 19:41   
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robonrome
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I was wondering if I got this and the filter holder upgrade kit with Tandem adpator ring I could then rotate the polariser independent of 1 or more mounted NDGrads?

Would seem to be a cheaper option that buying the round 105mm Lee Circular polariser and it's adaptor ring?

Post #1, Jun 03, 2010 19:41:42


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argyle
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There may be an easier and cheaper method without having to invest in a tandem holder (which would also create some vignetting issues). From what I understand, adjusting the square polarizer is just simply a matter of removing the filter from the holder, turning it 90 degrees one way or the other, and then re-inserting it back into the holder. Julian (jdizzle) uses this filter and if I recall this is how he makes the adjustment. Maybe he'll see the thread and offer his two cents, or you can shoot him a PM.

Post #2, Jun 04, 2010 09:58:54


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jdizzle
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Hi Rob. I do own this filter and Argyle's explanation for use of this filter is spot on. I love the filter and it's given me great results for my images. Let me know if you need any help. :)

Here's a pic of the filter.

IMAGE: http://i206.photobucket.com/albums/bb83/delarosaIII/IMG_4675.jpg

Here's a shot using that filter in combination with a 3 stop reverse GND.
IMAGE: http://DLImaging.zenfolio.com/img/s10/v16/p349268115-4.jpg

Post #3, Jun 04, 2010 14:43:07


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robonrome
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Thanks argyle, and Julian you've sold me, that image is simply stunning!

Post #4, Jun 04, 2010 16:38:30


rob - check my galleries at http://hardlightimages​.zenfolio.com/external link
Zenfolio coupon discount when signing up - 93R-NCK-DUT
_______________
Canon 5D Mkiii; Sony RX100; Lumix G5; 17-40L; 24L TS-E F3.5 Mk2; 24-105L IS; 40 F2.8; 135L; 70-200L F2.8 IS MkII; Ext II 1.4x; 580 exII; 270 ex... other filtery stuff:)

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FlyingPhotog
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Someday, the ground is going to split open under Julian and the Devil will collect!

<You my friend, Rock!>

Post #5, Jun 04, 2010 16:40:51


Jay
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jdizzle
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robonrome wrote in post #10303996external link
Thanks argyle, and Julian you've sold me, that image is simply stunning!

Your welcome Rob. And thanks! :)

FlyingPhotog wrote in post #10304008external link
Someday, the ground is going to split open under Julian and the Devil will collect!

<You my friend, Rock!>

Hehe! Thanks Jay. :)

Post #6, Jun 04, 2010 22:32:09


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rvdw98
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jdizzle wrote in post #10303293external link
QUOTED IMAGE

I must have seen this picture a dozen times by now, and only now did I notice a few things:

  • You relocated the filter slots so that the brass bolt is positioned to the right/left side of the holder (or perhaps your holder came preconfigured like that). I've always found it to be a nuisance for that thingy to be "in the path of the filters" so to speak and all that time, the solution was staring me straight in the face. :o
  • When your holder is mounted, the bolt appears to be fully released. Mine still sticks out a bit and is only fully released when I remove the holder from the adapter ring (does that make sense?). I wonder why this is and assume that the resulting tension on the bolt is also the reason why it takes considerable force/effort to rotate my holder around the adapter ring.

Post #7, Jun 05, 2010 08:06:06


Roy

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2005GLI
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may i ask what this filter cost?

Post #8, Jun 05, 2010 12:36:55


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Poe
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robonrome wrote in post #10298468external link
I was wondering if I got this and the filter holder upgrade kit with Tandem adpator ring I could then rotate the polariser independent of 1 or more mounted NDGrads?

Would seem to be a cheaper option that buying the round 105mm Lee Circular polariser and it's adaptor ring?

argyle wrote in post #10301556external link
There may be an easier and cheaper method without having to invest in a tandem holder (which would also create some vignetting issues). From what I understand, adjusting the square polarizer is just simply a matter of removing the filter from the holder, turning it 90 degrees one way or the other, and then re-inserting it back into the holder. Julian (jdizzle) uses this filter and if I recall this is how he makes the adjustment. Maybe he'll see the thread and offer his two cents, or you can shoot him a PM.

It seems to me that the OP wants to be able to rotate the polarizer in smaller increments than 90 degrees. It doesn't seem that this can be done with the square shaped filter and would need a holder that can be freely rotated while the GND stays fixed, or a circular filter that can be rotated with the confines of this current filter holder.

Post #9, Jun 05, 2010 13:11:12


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mike_d
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Poe wrote in post #10307734external link
It seems to me that the OP wants to be able to rotate the polarizer in smaller increments than 90 degrees. It doesn't seem that this can be done with the square shaped filter and would need a holder that can be freely rotated while the GND stays fixed, or a circular filter that can be rotated with the confines of this current filter holder.

Depending on how wide you need to go, a round CPL attached between the lens and the Lee holder could work. I've had a B+W CPL for a while and just got a Lee holder. I threaded the Lee holder into the B+W's front thread on my 17-40 on the 5D. At 17mm, the corners were black. At 21mm, there was some vignetting. At 24mm, it looked fine.

Post #10, Jun 05, 2010 13:45:22




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jdizzle
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rvdw98 wrote in post #10306687external link
I must have seen this picture a dozen times by now, and only now did I notice a few things:
  • You relocated the filter slots so that the brass bolt is positioned to the right/left side of the holder (or perhaps your holder came preconfigured like that). I've always found it to be a nuisance for that thingy to be "in the path of the filters" so to speak and all that time, the solution was staring me straight in the face. :o
  • When your holder is mounted, the bolt appears to be fully released. Mine still sticks out a bit and is only fully released when I remove the holder from the adapter ring (does that make sense?). I wonder why this is and assume that the resulting tension on the bolt is also the reason why it takes considerable force/effort to rotate my holder around the adapter ring.

I did relocate my filter slots but, I didn't modify anything on the actual holder itself. :) As for the bolt, I haven't had issues with mine. You can also order this bolt from B&H or from your local Lee dealer.

http://www.bhphotovide​o.com ...ing_Clip_Housing_fo​r.htmlexternal link

Post #11, Jun 05, 2010 14:39:58


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robonrome
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Poe wrote in post #10307734external link
It seems to me that the OP wants to be able to rotate the polarizer in smaller increments than 90 degrees. It doesn't seem that this can be done with the square shaped filter and would need a holder that can be freely rotated while the GND stays fixed, or a circular filter that can be rotated with the confines of this current filter holder.

That was my original intention, but once the idea was put there, I could manage with 90-deg increments for the $ saved I think:D

Post #12, Jun 05, 2010 16:44:30


rob - check my galleries at http://hardlightimages​.zenfolio.com/external link
Zenfolio coupon discount when signing up - 93R-NCK-DUT
_______________
Canon 5D Mkiii; Sony RX100; Lumix G5; 17-40L; 24L TS-E F3.5 Mk2; 24-105L IS; 40 F2.8; 135L; 70-200L F2.8 IS MkII; Ext II 1.4x; 580 exII; 270 ex... other filtery stuff:)

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rvdw98
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jdizzle wrote in post #10308065external link
I did relocate my filter slots but, I didn't modify anything on the actual holder itself. :)

Isn't that a contradiction in terms? ;)

jdizzle wrote in post #10308065external link
As for the bolt, I haven't had issues with mine. You can also order this bolt from B&H or from your local Lee dealer.

After posting this, I was futzing around with my holder a bit and decided to remove the bolt for no particular reason. :D When I put it on the adapter ring (unsecured so to speak) I noticed the same friction while rotating. One half of a full 360 degree rotation goes smoothly, the other half takes a lot of force. And with the bolt removed, that can only be caused by the holder and/or the ring not being perfectly circular.

So I flipped the ring around front to back and tried rotating it again, and that didn't cause any friction whatsoever. Also, while I can drop the ring into the holder in one orientation, when I rotate it 180 degrees, I have to force it in. That means that the holder is probably okay, but the inside of the adapter ring (where the bolt and the two holder tabs slot into) must be slightly warped.

The bad thing about that is that I have already exchanged the holder a while back for the very same issue, only then it was so bad that I could actually see it being slightly oblong, which the dealer confirmed upon receiving my holder. And now I may have to return the ring as well...

Not too impressed with Lee's QC right now... :cry:

Post #13, Jun 05, 2010 17:34:50


Roy

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rvdw98
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2005GLI wrote in post #10307619external link
may i ask what this filter cost?

http://www.bhphotovide​o.com ...ular_Polarizer_Glas​s.htmlexternal link

Post #14, Jun 05, 2010 17:38:08


Roy

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jdizzle
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rvdw98 wrote in post #10308830external link
Isn't that a contradiction in terms? ;)


After posting this, I was futzing around with my holder a bit and decided to remove the bolt for no particular reason. :D When I put it on the adapter ring (unsecured so to speak) I noticed the same friction while rotating. One half of a full 360 degree rotation goes smoothly, the other half takes a lot of force. And with the bolt removed, that can only be caused by the holder and/or the ring not being perfectly circular.

So I flipped the ring around front to back and tried rotating it again, and that didn't cause any friction whatsoever. Also, while I can drop the ring into the holder in one orientation, when I rotate it 180 degrees, I have to force it in. That means that the holder is probably okay, but the inside of the adapter ring (where the bolt and the two holder tabs slot into) must be slightly warped.

The bad thing about that is that I have already exchanged the holder a while back for the very same issue, only then it was so bad that I could actually see it being slightly oblong, which the dealer confirmed upon receiving my holder. And now I may have to return the ring as well...

Not too impressed with Lee's QC right now... :cry:

Yeah but, I wouldn't called that modifying the holder. If I used a hacksaw to do it, then yes. ;) I'm sorry you're having issues with your filter holder. I have had no issues with rotation on the adapter ring with both of my filter holders. You are one of the few here on this forum that has that issue. I guess Lee does have some issues with QC. :confused:

Post #15, Jun 05, 2010 19:24:17


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