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Thread started 28 Jan 2010 (Thursday) 04:15
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Which ND / GND filters better than Hitech?

 
weeatmice
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Jan 28, 2010 04:15 |  #1

I got myself the following along with the Lee holder and WA adaptor ring.

Hitech 100 ND Grad Filter - ND 0.6 (SOFT Edge)
Hitech 100 ND Grad Filter - ND 0.9 (HARD Edge)
Hitech 100 Neutral Density Filter - ND1.2

Unfortunatly, they have a serious magenta color cast. I'm willing to accept a small amount, but my photos show worse casts than I have been able to find on the net.

Which other brand should I go for? I'm looking at Lee filters as they are not too much more cost wise.


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jcothron
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Jan 28, 2010 09:07 |  #2

Lee filters are fine, then you have Singh-Ray as well. From my experience I would stick with either of those two.


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Lowner
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Jan 28, 2010 10:32 |  #3

weeatmice,

According to a test carried out by AP, who tested all the major products, they ALL have colour cast issues of one kind or another. No exceptions. And price was not a factor, the more expensive were just as bad as the el cheapo ones.

All is not lost though, just adjust in post-processing.


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argyle
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Jan 28, 2010 11:56 as a reply to  @ Lowner's post |  #4

I can see where you may have an issue with colorcast if you are stacking the filters. Long exposures tend to cause IR contamination, which results in the magenta cast. If you are stacking the 4-stop ND and a 3-stop GND, you'd be more likely to experience the colorcast (especially if the lighting wasn't good). I've used Hitech GND's for years (never stacked) and have never seen a colorcast. As Lowner has mentioned, this happens in the best of filters, even the B+W 10-stop.


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weeatmice
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Jan 29, 2010 05:24 |  #5

Thankyou all for the advice.

Having spoken with the guy at Teamwork Digital (who I recommend) who I bought the stuff from he was happy to take back the filters so I'll be doing that and getting a couple of Lee filters instead. He mentioned they have less problems of this kind with those.

I understand this can be fixed in post, but I wanted to avoid that, or for it to be a simple fix. If I wanted to spend time in photoshop I would shoot HDR instead.

I was stacking filters in some images, and cast in those images was awful. If I get time I will post those just to give you a laugh. However I also get a noticably pink sky using just the 2 stop soft grad. I did come across a post on photo.net that suggested there may be QC issues, hence why some people have no problems.

So, we'll see if the Lee filters turn out better for me. I'll post results in a few days.


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argyle
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Jan 29, 2010 07:59 |  #6

weeatmice wrote in post #9495997 (external link)
Thankyou all for the advice.

Having spoken with the guy at Teamwork Digital (who I recommend) who I bought the stuff from he was happy to take back the filters so I'll be doing that and getting a couple of Lee filters instead. He mentioned they have less problems of this kind with those.

I understand this can be fixed in post, but I wanted to avoid that, or for it to be a simple fix. If I wanted to spend time in photoshop I would shoot HDR instead.

I was stacking filters in some images, and cast in those images was awful. If I get time I will post those just to give you a laugh. However I also get a noticably pink sky using just the 2 stop soft grad. I did come across a post on photo.net that suggested there may be QC issues, hence why some people have no problems.

So, we'll see if the Lee filters turn out better for me. I'll post results in a few days.

That's interesting...I guess its not only Canon that's palgued with QC issues after all :D . The only filter that I've stacked my Hitechs with has been a B+W CPL, and like I posted above, never had a colorcast problem. Lately, I've also stacked one with a Singh-Ray Gold-N-Blue polarizer without any problems. It would seem that every now and then a bad batch of Hitechs makes it to market.

I recently switched to Lee filters as well, but not by choice. I made a comment to my wife that my GND's were getting scratched up from use, so she picked up a Lee 3-filter kit as a Christmas gift. Of course, I couldn't refuse them... Good luck with your new filters.


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weeatmice
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Feb 03, 2010 10:08 |  #7

The following arrived today

2 Stop soft Lee GND (Resin) 100mm
3 Stop hard Lee GND (Resin) 100mm

I cant see any cast with these, and am very happy with them. Even stacked together they seem just grey too me.


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weeatmice
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Mar 13, 2010 11:26 |  #8

Just for reference - here are the samples from hitech test at the beach (on earth in fact!)

Only RAW conversion, no processing. I realise its possible to correct this in PP, but that does require a bit of paitence matching a gradient in Photoshop to the one in your image.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR


IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FLICKR

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Mike ­ K
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Mar 13, 2010 13:41 |  #9

I have used soft and hard 2 and 3 stop Hitech P size GND for several years and not noticed a color cast. However for a strong ND I am now using the 4" wide Hitech 4 stop ND (two stacked = 8 stop ND) and have seen color cast. The color is not magenta, but more of a yellow/brown. It was very easy removing this color in DPP, I simply moved the B and G curves to the left a bit when converting RAW. It was easy, as every shot had the exact same adjustment and amount. For calibration one could shoot a gray or white card, then since there is no color, the RGB traces should line up. This tells you how much adjustment should be made on all shots with these filters. Calibrating GND would be a bit more involved, as the adjustment would just be for the shaded part of the image.
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Mike55
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Mar 15, 2010 06:10 |  #10

Lowner wrote in post #9489870 (external link)
weeatmice,

According to a test carried out by AP, who tested all the major products, they ALL have colour cast issues of one kind or another. No exceptions. .

After testing a few out I thought I was going crazy. I junked them all for multiple exposures.

Do you have a link to the test? Thx.


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rklepper
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Mar 15, 2010 06:22 |  #11

I get a color cast with mine, but only if I stack 2 GNDs with a CPL.


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Jon
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Mar 15, 2010 06:51 |  #12

I suspect the "color cast" with high neutral density levels is actually your sensor responding to IR, which can, given sufficiently long exposures, reach the sensor in "measurable" quantities (how by using an IR filter you can take IR photos even though you need very long exposures to do so).


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Which ND / GND filters better than Hitech?
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