October 25, 2014, 11:46:45 PM

Author Topic: 10 stop High quality ND filter  (Read 6715 times)

scottburgess

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Re: 10 stop High quality ND filter
« Reply #15 on: June 20, 2013, 04:38:24 PM »
I use the Lee big stopper. I have not observed any color casts. Can also easily be combined with ND grads. It's not a cheap system, but high quality and versatile.

Matt Harris noticed a significant color cast with that and the B+W filters.  Is this a new version?

http://mattharrisphotography.co.uk/articles/reviews/lee-big-stopper-review


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Re: 10 stop High quality ND filter
« Reply #15 on: June 20, 2013, 04:38:24 PM »

stoneysnapper

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Re: 10 stop High quality ND filter
« Reply #16 on: June 20, 2013, 04:55:16 PM »
Interesting that Formatt Hi-tech filters have not been mentioned, they are a UK based company, their filters have went up in price over the last couple of years probably due to being compared favourably with Lee. I'm pretty sure I paid £80 for their Pro 10 Stop around 2 years ago and they supply with a fitted gasket to fit the Lee holder. Its now around £100. It has a blue cast similar to the Lee Big Stopper.

I had the B&W 10 stop about 4 years ago and whilst I thought it was great I really did find screwing it on and off a bit of a pain for refocussing etc, I much prefer the convenience of slot in filters. I see some other people prefer convenience of screw on.

Formatt Hi-Tech

http://www.formatt.co.uk/stills-filters/filters/standard-n-d/stills-filters.aspx

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paul13walnut5

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Re: 10 stop High quality ND filter
« Reply #17 on: June 21, 2013, 11:51:27 AM »
Here are some test shots with the B+W to show you the 'warm' effect.
I'm going to do this over a few posts, so apologies in advance.

Canon T3i and Tokina 11-16 f2.8 @ f2.8 for each shot.

I have taken 3 shots, one unfiltered, one filtered with manual WB, one filtered with AWB.

I've then added two extra shots, one corrected using the QPcoloursoft 501 software that you download to use with the QPcard, and one corrected with Adobe Photoshop Elements.

First up:

Unfiltered.  Camera set to daylight WB preset.


paul13walnut5

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Re: 10 stop High quality ND filter
« Reply #18 on: June 21, 2013, 11:52:22 AM »
Now, with the ND in place and the camera WB manually set off the grey card:

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Re: 10 stop High quality ND filter
« Reply #19 on: June 21, 2013, 11:53:00 AM »
Now with ND in place and Cam set to AWB:

paul13walnut5

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Re: 10 stop High quality ND filter
« Reply #20 on: June 21, 2013, 11:53:37 AM »
Now corrected with QPcoloursoft 501:

paul13walnut5

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Re: 10 stop High quality ND filter
« Reply #21 on: June 21, 2013, 11:54:36 AM »
Now corrected with Photoshop Elements Auto colour correction tool (so thats AWb in camera and additional colour correct in PSE)

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Re: 10 stop High quality ND filter
« Reply #21 on: June 21, 2013, 11:54:36 AM »

TomazK

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Re: 10 stop High quality ND filter
« Reply #22 on: June 25, 2013, 03:37:56 AM »
Thank you for the test shots Paul. They clearly show that there is a color shift, but I guess there is some in all filters and it looks like it can be corrected several ways to achieve the (mostly) simmilar result.

Thanks
T
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K3nt

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Re: 10 stop High quality ND filter
« Reply #23 on: June 25, 2013, 05:40:18 AM »
I use LEE filters 100x150mm (4"x6") with the Cokin Z-Pro holder and the combo works just fine. The Big Stopper does add a blueish cast to the images but that is easily circumvented with either Custom WB or post-processing.

This shot had a 4-stop Hoya 77mm screw-in ND filter, then the cokin holder with the Lee Big Stopper and a Lee 3-stop soft grad ND filter for the sky, all stacked for a nice 17-stop filtration. :) Gave me an effective f-stop of f/3983. :)


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Canon1

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Re: 10 stop High quality ND filter
« Reply #24 on: June 25, 2013, 05:58:16 AM »
I much prefer the Singh Rey 10 Stop Vari Filter.  Gives you a full range from 1 to 10 stops.  The nice thing is you can focus and compose at 1 stop and then rotate the filter to the level of stops you want and then take your picture. 

Whatever you get, variable stop filters are the way to go as your camera cant AF with a 10 stop filter on the front, and you can't see anything through the view finder.  I also rarely use all 10 stops.  More often I want to be at 4-5 stops.  The only downside is it will cause vignetting on UWA and sometimes can add a color cast on wider then 20mm. 


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Re: 10 stop High quality ND filter
« Reply #24 on: June 25, 2013, 05:58:16 AM »